Oh hai Fuel Injection! I make just as much power as you, if not

1/10 try harder

>>16871113
>I make just as much power as you, if not even more
Lies. Why do boomers perpetuate this myth?

>500$ laptop

bitch please i can tune my car with a 50$ netbook

>Decent carb costs 1k+
Lmao

File: 1466915889606.jpg (8KB, 225x225px) Image search: [Google]

8KB, 225x225px

>>16871113
but what about your airflow?

>>16871113

Only redeeming thing for carbs, for me, is the whole tinfoil drive-by-wire paranoia which drives me away from fuel injection.

The only good thing about a carb is that it's called carburettor.

>>16871289
Older FI still have a physical throttle cable if that's what you're paranoid about.

>>16871289
my fi is drive by cable

File: PFI_Kraftstoffzuteiler_486x250_stage.jpg (48KB, 486x250px) Image search: [Google]

48KB, 486x250px

>>16871113
'sup you senile old piece of shit, how's it feel to be completely irrelevant outside boomermobiles and dornorcycles? How's it feel knowing you'll never get near the power I can achieve, or the mileage? Pic related, its me and my bitch

>>16871289

Until recently, drive by couldn't be interfered with remotely

>>16871113
kek

even NASCAR doesnt use that shit anymore

carbs are garbage

File: Mint.jpg (24KB, 390x390px) Image search: [Google]

24KB, 390x390px

>>16871166
>SU carbs with a manual choke

>>16871420
To be fair Carbs, are not even relevant with donorcycles.

None of the top Supersports or Superbikes use them.

>>16871113
You sound like my uncle.

Well you see gramps, everyone has a laptop, but not everyone has such specialised equipment as a screwdriver. Get it?

>>16871128
Kill yourself my man

File: 20.jpg (83KB, 640x480px) Image search: [Google]

83KB, 640x480px

>>16871489
the godmachine does

>>16871113
>$5 screwdriver
>plus new jets every time you need to tune it
>plus hundreds of dollars worth of wasted fuel because it isn't delivered efficiently

>>16872187
Dirt/adventure thumpers haven't had to change design since before I was born in 85.

File: jet.jpg (133KB, 602x434px) Image search: [Google]

133KB, 602x434px

*blocks your path*

>>16871289
They will use other cars to crash in you. You are not safe anon.

File: landscape-1443551541-roa100115dpt-boot8.jpg (111KB, 980x490px) Image search: [Google]

111KB, 980x490px

> tfw mechanical fuel injection master race

File: 1994-volvo-850-t5.jpg (99KB, 1200x688px) Image search: [Google]

99KB, 1200x688px

>>16872620
>this triggers the three letter agency

>>16872650
>Injection pump
>On a gas engine
What's it like adjusting your throttle linkage and metering screw every time you fill up at a different gas station?

>>16871166
What 3rd world country do you live in

File: Mahle_jet_ignition.png (1MB, 1270x1630px) Image search: [Google]

1MB, 1270x1630px

>>16871420
I'm coming for you

What does a carb do to adjust for air density and barometric changes?

Oh, thats right. FUCKING NOTHING.Enjoy using that screwdriver on the side of the road to make your car perform when the temp changes.

yeah have fun trying to start in anything but sunny 70 degree weather

t. carb owner

>>16872872
pretty nice actually

File: 9410SpeedRacerMach5CB.jpg (51KB, 533x360px) Image search: [Google]

51KB, 533x360px

>>16872620
wait until they see my modifications

>>16871362
Same my fi is physical throttle cable. Even has CRUISE CONTROL.

File: 1488869960777.png (495KB, 698x760px) Image search: [Google]

495KB, 698x760px

>>16873585
>living anywhere other than california

>>16871113
>muh emissions

>>16873585
>tfw my garage is always cool
>even in 90 degree weather
>comfy to work on car with door open
>go to start car
>have to crank for 8s and then hold the throttle a 1/4 for another 5s to get it to hold idle

y-yeah carbs are awesome, r-right?

Fucking quadrajunk

>>16873699

>being this delusional

>>16873765
>Fucking quadrajunk

So you don't know to tune or rebuild the thing is what you're getting at? Because I have a Qjet with no choke fueling a high compression 468 and all I have to do is pump the gas three times and it'll fire on the first key turn even on 40ish degree mornings.

>>16873793
It starts and runs and the car isn't used enough to justify pulling something that is currently functional enough apart

Its also much farther down on the list than a few other pressing issues with that pile

also the later quadrajunks suck

>>16872935
one where people dont put shitty smog era or plastic chinese ripoffs carbs on their performance vehicles

https://www.cbperformance.com/category-s/342.htm

Carburetors are more simple to manufacture and work on. If you were trying to make a simple, rugged engine a carburetor would be a better choice. For a modern vehicle with access to modern maintenance equipment and techniques there is literally no reason to go carbed.

>>16873699
>implying LAPD wouldnt headshot me through the windshield as soon as my carbed sbc with headers and straight pipes rolled over the state line

>>16873675
mfw this shit would weigh a fuckton

>>16871113
>drive up a mountain
>car runs like shit
>get to the top of the mountain, it's cold and snowy
>car runs like shit, barely idles
>drive back down the mountain, it's hot
>car idles at 5000rpm
>it's the next morning, pretty cold out
>car won't start, idles at 5000rpm on the choke
>EFI car just werks

File: 1489726653627.png (156KB, 362x259px) Image search: [Google]

156KB, 362x259px

>>16873699
>Living in California

>>16873836
auto jacks baby

Lmao fuck off boomer. Even ktm 2smokes will use EFI now, to get within euro4 parameters.

The main advantage of EFI over turbos becomes apparent with turbocharging. You know how much of a pain in the fucking ass it is to tune a turbo carburatted car? No, you don't, and that's why turbocharging wasn't common in anything but racecars before fuel injection simplified things. Turbos wouldn't have achieved their current popilarity in the tuner and hot-rodding scene, for instance, without EFI.

With an EFI, tuning an engine is a matter of minutes. With a carb, it's a matter of days.

>>16874357
just put fuel in the turbo

>>16873699

>Willing living in a communist shithole.

No thanks, I enjoy owning firearms.

t. based Florida

>>16874357
also knock sensors are handy

>>16871487
>SU
>Not Weber

>>16874557
>buying a meme carburetor that's part of FIAT group

All the carb'd vehicles I've had have been known for having good carbs, and I always tune them. I've never had any of these problems.

Always easy to start, no issues with temperature or altitude.

I have to admit I do find all the sensors that go with efi and start failing after 10+ years pretty annoying.

Those god damn malfunctioning o2 sensors always fused into the exhaust.


In my experience both systems are very appropriate if they're taken care of and decently maintained

What do you memers recommend as a good starting point to tuning twin SU carbs? A carb balancing tool, a colour tune and a decent book on SU carbs? Anything I've missed?

File: a fucking rock.jpg (323KB, 800x703px) Image search: [Google]

323KB, 800x703px

>Oh hai hammer! I weigh just as much as you, if not even more. I can be operated by a primordial man instead of a post-neolithic poofter, and cost far less than you to purchase as well!
>Fuck you!

>>16874501
Florida a best

>>16873699
>living in a spic infested desert and nanny state
?

>>16872813
Underrated.

>>16874557
Patrician taste, anon.

File: images(31).jpg (27KB, 580x432px) Image search: [Google]

27KB, 580x432px

What about the rape baby TBI?

Plan to use one of these on my weiand 174 instead rb because fuel injection (even if its not god multi point) is comfy.

>>16875430
Isn't this like the worst of both worlds?

>>16875448
Yeah it really is. Single point fuel injection was a horrible invention to bridge the gap between the available technology post cats in the early 90s and the cheap technology. Luckily by 2000 SPI was only found on total shitters

>>16871113

EFI is superior in nearly every way, and this is coming from a mechanic of many years

only carbureted vehicle i have now is a Subaru Sambar purely because i want something simple that cant be damaged from EMP. i had a carbureted 81 Toyota Hilux and it was nothing but issues, it would run fine then run like shit a month later. got to the point i sold it to someone so it wouldnt sit for months on end after i ripped my hair out

>>16875448

i dont mind TBI, i had a 88 Nissan KingCab with the electro injection 2.4 TBI engine and i drove that thing in -50c one winter

everythings got their pros and cons but i think carbs are looked at with rose tinted glasses, they still have their place but the advancements weve made in the last 30 years are huge

>>16872872
yeah are you retarded? that's just a stock image

File: 1489435944176.png (179KB, 500x280px) Image search: [Google]

179KB, 500x280px

>>16873287
Teach me your strange and mysterious ways.

File: 16299093_10158188757710584_4653448610086999233_n.jpg (74KB, 960x540px) Image search: [Google]

74KB, 960x540px

Carbs are simpler to install, more difficult to tune well and have inherent driveablility issues which are exacerbated with changes in temperature and elevation.

EFI is more difficult to install and manage, but properly mapped and managed does away with virtually all driveability issues. TBI is a step up from carbs, MPFI is EFI perfected. Direct Injection is gets you more power and fuel economy at the expense of carbon buildup, maintenance and initial cost.


Same way I'd rather an MSD ignition box than points or HEI, I'd rather have EFI over a carb.

>>16871672
>I don't own a screwdriver but I own a laptop
Woman detected. Tits or gtfo

>>16873585
I just set my valves after a new hydraulic cam. Started a good 20 times in 30F weather, only needed to pump the gas on the first one
Wat r u doin rong?

>>16871487
>>16875102
>>16874557
>not knowing anything about SU carbs

>>16873585
do you even know how vacuum advance works

>>16873765
you need to rebuild your carburetor, or maybe buy a new one.

>>16871113
Peak power? Sure.

More power across a wider rev range? Not a fucking chance

>>16875603
>not using BVF carburetors

>>16875299
Kek

>>16875615
>not having sequential carburettors
>one on top of the other
>bottom one for idle to mid range
>top one for peak power

you aren't even trying

File: 137593505136.jpg (14KB, 240x320px) Image search: [Google]

14KB, 240x320px

>>16871113
>Holley

>>16873826
Oh god common sense.

No surprise this post was ignored.

File: stupid.gif (12KB, 489x669px) Image search: [Google]

12KB, 489x669px

>>16875626
>motorcycle carbs?? that still use needle jets?? tf are you thinking

>>16871489
What is with/o/s obsession with retard machines like superbikes and supercars? You don't see /k/ creaming over $10,000 boutique rifles and racepistols nor does /g/ dream of $3,000 enterprise-grade CPUs. What is the purpose of even acknowledging the existence of such machines?

>>16875783
because some people on /o/ can afford them

>>16871113
These don't work when flipped upside down.

I demand my vehicle preform under ALL conditions. Last thing I need is for the engine to die after the car flips upside down.

>>16875808
Semi related question.

How do light aeroplane carbs work under changing altitude and orientations?

>>16875821
It was actually a problem in early Spitfires.

https://en.wikipedia.org/wiki/Miss_Shilling%27s_orifice

>>16875821
They don't.
Planes with carbs have a low service ceiling and can't fly upside down for very long.

>>16875821
I don't know all the details but check out
https://en.wikipedia.org/wiki/Pressure_carburetor
and wiki walk from there

the Spitfire's acrobatic performance in WWII was a big push to address these issues, which are not that problematic under normal upright flight.

Sounds like they had three stages

Carburettor

Pressurized carburettor with added float control

fuel injector

>>16875802
Yeah no. Nobody here has a Ford GT and if they say they can afford it they are lying. There are people on /k/ who routinely post collections worth $30,000+ but you'll never see anything worth more than $3,500 by itself because it's generally considered to be wasteful and stupid to buy such things as the only thing you can buy above that point amounts to either snake oil or "master craftsfaggot Hurrist McDerp built this rifle and Butfuk McBride did the engraving so of course it's worth $20,000," which you will be rightfully ridiculed for buying instead of a blueprinted Remington 700 that probably performs better and still won't cost $5,000.

Also what's with the obsession with pure speed?

File: 30400kit.jpg (116KB, 1600x886px) Image search: [Google]

116KB, 1600x886px

>>16871113
Oh hai, Carb! I make the same peak power as you, tune myself so you don't even need a screwdriver and pay for myself in fuel savings at just 15k miles. And have a stable idle. And start in mid-winter on the first crank. And re-adjust myself when you throw new parts at my host engine.

There's full-sequential multi-port injection kits too, but at twice the cost it takes twice as long to pay for itself. Still, fuck you Carb.

>>16871113
0/10. I would kill for fuel injection. Done dicking with carbs soon...

>>16875688
Only shitposts get any responses around here how new are you

a little greentext helps here and there too

>>16875821
Light aircraft pilot here. Reciprocating-engined aircraft have a knob/lever that allows the mixture to be adjusted directly. Not sure about more complicated engines, but on the carb'd/aspirated 1970s shitbuckets I fly, you're supposed to shut down by leaning mixture control rather than cutting ignition. In an aircraft without an EGT sensor, you find your mixture by leaning until the engine starts to crap out in flight. Can be kind of funny if you have a passenger along.

Maneuvers are normally coordinated, meaning the force on the entire airplane is is straight below the aircraft, regardless of bank. Most uncoordinated maneuvers (slips, spins) are transient or mild enough to not cause fuelling issues. Sustained aerobatics require a specially-designed fuel system, tanks to injectors/carb.

As for service ceiling, the Cessna 152 I usually rent is certified for flight up to 14,700 feet over sea level, and can still fly even higher; I've read about people getting them over 18,000. The pilot is only allowed up to 12,500 if he doesn't have supplemental oxygen aboard.

>>16876007
>pay for myself in fuel savings at just 15k miles
My Camaro gets 15 mpg. If FI got it to 17 mpg, then it would take 110,000 miles to pay off a $2,500 system, FAstGGOT.

>>16876239
You can do fuel injection without modifying your fuel system at all for 1200. Gotta love maturing technology

>>16876139
well your gonna hafta buy random air fuel intake exhaust reatio rtemp sensor first it runs about 150 new and you should replace all 6 of em and the o rings and then pressure test and reboot comp but then you get to the good part then you can chase a misfire for 4 hours to find one vacum leak

>>16876262
or you can ditch fuel injection sell it to a retard for 500 bucks and buy a carb and intake for 10 bucks?

>>16871127
>Lies
Wrong
>>16871166
A DCOE costs around $400 and it's the pinnacle of performance. You'll need to buy multiple though.

>>16871470
Because of emissions, just like F1.

>>16871489
Because of emissions. Carbs are still coming equipped on dirt bikes even. and most manufacturers didn't bother switching until the mid 2000s iirc.

>>16872203
>>plus new jets every time you need to tune it
You can literally clean jets with a bottle of water.
You don't need to buy new ones after the initial tune.

>>plus hundreds of dollars worth of wasted fuel because it isn't delivered efficiently

You always want to burn slightly rich anyway.

>>16873562
>What does a carb do to adjust for air density and barometric changes?
Same thing FI, nothing.
The only thing that can put more air into your engine at high altitudes is forced induction. Fuel injection doesn't magically increase atmospheric pressure.

>>16873585
>yeah have fun trying to start in anything but sunny 70 degree weather
I have literally started my carb'd cars with slow-spinning starter (from the cold). I have never not been able to get them started in the cold. You suck at tuning a choke.

>>16873699
>not living in America

>>16873765
>>have to crank for 8s and then hold the throttle a 1/4 for another 5s to get it to hold idle
if you let it sit for more than a week the fuel will leak back down the lines and the pump will have to prime the carb all over again.

>hold the throttle a 1/4 for another 5s to get it to hold idle
This means your choke is out of tune, your fast idle cam should have done this job for you.
Git the fuck good.

>>16873826
>Carburetors are more simple to manufacture
The fuck they are lmao.

Carburetors are extremely complex dumb machines.
No one in this thread could build a functioning carburetor from scratch.

>>16873986
wrong

>>16874307
>to get within euro4 parameters.
This is the true reason carbs died. They don't work with catalytic converters. Emissions are what done them in.

>>16876298
That's retarded. A good intake used won't be less than a hundred and a good carb is minimum 50.

Besides, EFI is the titties with the current class of tech. I would totally buy this if I had the cash.

The 400hp version costs like 200 less

http://www.jegs.com/i/FITech-Fuel-Injection/546/30002K/10002/-1?CAWELAID=230006180009847818&CAGPSPN=pla&CAAGID=15769068431&CATCI=pla-208663438631&catargetid=230006180037476986&cadevice=m&gclid=Cj0KEQjwnsPGBRDo4c6RqK-Oqu8BEiQAwNviCSxzNQ5ZZSMZpIsC-b0LU45_R6VhflQa-IbvLNFb_eAaAuux8P8HAQ

>>16871489
They're easier to fix yourself.

>>16874357
>With a carb, it's a matter of days.
False, it's a matter of a screwdriver.

>>16875102
It's pretty much the top tier carb.
The most efficient carbureted engine is one that has a single barrel per cylinder and webers achieve this.

>>16875177
>a good starting point to tuning twin SU carbs?
buy the Hayne's manual
https://www.amazon.com/Weber-Carburetor-Manual-Including-Carburetors/dp/156392157X

>>16875430
>the worst qualities of carbs with the worst qualities of FI.

These kits exist only to convert old engines without needing to spend $10k on a custom MPI setup.

>>16875476
>EFI is superior in nearly every way,
wrong

>that cant be damaged from EMP.
Good luck killing FI with an EMP tinfoil. The whole frame of the car is a giant Faraday cage.

>>16875572
>more difficult to tune well
I disagree, this is only because it's a dying skillset.

>changes in temperature
If your choke pulloff is working right this isn't an issue.

>>16875615
>More power across a wider rev range? Not a fucking chance
This is the main problem with carbs and the nail in the coffin.
Any carb that is good for economy is horrible for power and vice versa. it's a set it and forget it.
The only thing that came close to the middle ground was the Quadrajets and Thermoquads which have really small primary circuits for mpg and huge secondaries for power.

>>16875683
this, you're paying for that name.

>>16875808
Neither would FI, the pickup tube sits on the bottom of the fuel tank retard.

>>16876007
>Oh hai, Carb! I make the same peak power as you, tune myself so you don't even need a screwdriver and pay for myself in fuel savings at just 15k miles. And have a stable idle. And start in mid-winter on the first crank. And re-adjust myself when you throw new parts at my host engine.
You're also prone to failure but who's counting?

>>16876344
>a good carb is minimum 50
$50 will get you something that needs to be rebuilt. a good carb is $200 or more.

>>16871113
Two words:
Carb. Ice.

>>16876398
The carb god is not happy with your sacrifices.

File: IMG_20161231_174603.jpg (455KB, 1080x1920px) Image search: [Google]

455KB, 1080x1920px

>>16876378
That's what I meant. I know this feel

>>16871116
>>16875299
replying to the good posts itt

>>16875688
Thanks m8
Kids nowadays think EFI has always been the superior choice. It was a liability for years and it is still worse in certain situations, for example stationary diesels (I run a boat with my Dad with an old 660 C.I. Cummins i6) I would love to see these guys try to run FI on an engine with jets the diameter of a dime.

>>16875925
You're a fucking idiot.
/k/ has Anzio (20mm) anon
There's anons with H&H rifles
/mu/ has gearfag who probably single-handedly raised the price on shitty silvertone amp-in-case guitars because he bought so many

Fuck, /diy/ has that guy who bought a fucking bunker. And he's renovating it. For fun.

>>16876373


Tuning a turbo carbed engine:

>"Ok, let's hit the road see how she runs"
>"Oh, it's running rich"
>Stop, open the hood, dissasemble the air filter and fiddle with the carb"
>"Ok, we spent 15 mins adjusting the carb. Let's try again"
>"Now it's too lean. Back to the garage"
>Hood goes up again, air filter comes off again, screwdriver comes in again.
>"Back to the road"
>"It's slightly rich AGAIN"
>REPEAT AD NAUSEAM

Tuning a turbo efi engine:

>"Ok, let's hit the road see how she runs"
>"Oh, it's running rich"
>Hit a key on a laptop
>"Oh, it's running lean"
>Hit another key on a laptop
>"Oh, it's slightly reach AGAIN"
>Hit another key on a laptop
>"Yup! Now that's the AFR I wanted!"
>Engine is perfectly tuned without even stopping or opening the hood.


Again, retardo, why do you think turbocharging only became feasible in roadcars with the advent of EFI? Saying F1 and other racing series use EFI just for emissions is absolutely retarded as well, WTAC and drift cars sue EFI and their regulations aren't focused on emissions. A proper custom-made standalone MPFI isn't that expensive. A brand-new Haltech ECU runs for $1k and let's say that a manifold, fuel rail, pump and injectors would set you back other 2k/3k: there you go, enough fuel management for whatever you need.

You clearly know shit so stop being a try-hard.

>>16876471
>>"Oh, it's running rich"
>>Stop, open the hood, dissasemble the air filter and fiddle with the carb"
>>"Ok, we spent 15 mins adjusting the carb. Let's try again"
>>"Now it's too lean. Back to the garage"
>>Hood goes up again, air filter comes off again, screwdriver comes in again.
>>"Back to the road"
>>"It's slightly rich AGAIN"
>>REPEAT AD NAUSEAM
You've confirmed for me that you don't know anything about how carburetors function.
Luckily this is the 21st century and you can hook o2 sensors to your exhaust and watch how the carburetor is running.

>>"Oh, it's running rich"

If it's running rich, that's fine. If it runs too rich it doesn't run.

>Now it's too lean. Back to the garage"

There is no back to the garage. If it's running too lean you're calling a tow truck.


>turbocharging only became feasible in roadcars with the advent of EFI?
Good theory but even GM turbocharged cars as far back as 1962.

>>16876471
>A brand-new Haltech ECU
ask me how i know you suck might cunt mods dicks

>>16875925
>Why do car guys like expensive cars
Lmao get the fuck out of here faggot
Go to >>>/n/

>>16876239
Try over 20mpg.
Faggot.

>>16876373
>prone to failure
So at least it's still equal to a carb there.

>>16876560
Try a 2 barrel carb.

>>16876564
Yeah if you bought some shitty remanufactured discount vatozone carburetor.

>>16876572
>2 barrel carb
way to cuck yourself. The TBI kits flow more air than any carb suitable for the same engine because they dont need a vacuum signal. WIth a 2-barrel you're just going to widen the gap to the point where a carb can't even pretend to compete anymore.

>>16876585
>The TBI kits flow more air
That's why you don't get good MPG out of huge carbs, the more you know.

>because they dont need a vacuum signal.
Mate, TBI kits have a single injector squirting into a manifold.
They are no better than carbs and to pretend otherwise is plain ignorance. The only value TBI has is improved cold starting and on-the-fly A/F adjustment, although the value in that is tenuous because any engine that can accept a TBI kit should be burning slightly rich as a safety net against overheating.


>WIth a 2-barrel you're just going to widen the gap to the point where a carb can't even pretend to compete anymore.

You want fuel economy or power?
That's the choice that needs to be made for any carburetor.

A quad Weber pack on your V8 won't regularly see double digit mpg without conciously driving conservative but that setup will support more power than your engine makes anyway, whereas a single barrel carb on a straight 6 can get 25mpg with a light foot. The redline may be at 6k but then engine will be starved by 5k rpm.
I don't understand why you can't grasp this concept.
The only variance to this is if huge engine is making so much power you barely need to crack the throttle and it's already at the speed limit. That sort of tune can get surprisingly good mpgs as well.

>>16876560
>Try over 20mpg
Then to pay off a system in 15,000 miles, you are claiming an increase of 11 mpg, lol.

>>16871113
Do you also think DOHC is a passing fad?

File: 2016-dodge-viper-acr-official-photos-and-info-news-car-and-driver-photo-659008-s-429x262.jpg (21KB, 429x262px) Image search: [Google]

21KB, 429x262px

>>16876655
Clearly.

>>16875925
You're an idiot
/g/ faps to enterprise and server grade equipment
a decent amount, of old /g/ anyways, are sys admins who have to deal with that shit on a daily basis

What is Demand Circuit vs Feedback Circuit?
>carb operates on demand which gives you power RIGHT NOW, when you need it
>FI operates on feedback, which gives you power when you needed it a second ago

>>16876639
>I don't understand why you can't grasp this concept.
Do some more reading. Im talking to another Dunning-Krueger victim here.

Only a bad engine needs a safety net against overheating. Sort out your cooling system.

Carbs and TBI are fundamentally different in how they use airflow making TBI superior by design. A carb needs to constrict airflow to generate sufficient signal. This means a huge carb pretty much has to be adjusted to LEAK fuel at idle (insofar a carb isnt already a controlled leak). The TBI can run much leaner because it doesn't have that deficiency, thereby getting economy at idle and power high up without restriction.
A carb also doesn't shut off when engine braking, further widening the fuel consumption gap between it and TBI. The key thing to take home is that with TBI, you DONT need to choose between economy and power.

You said over half of this yourself and you still don't realize injection's superiority. That's what surprises me the most.

File: DOHC Hemi.jpg (115KB, 637x825px) Image search: [Google]

115KB, 637x825px

>>16876655
If it wasn't for Bill France maybe OHC would have been a hit sooner in America

>Only a bad engine needs a safety net against overheating.
Wrong. The engines that that TBI kit is marketed towards have no sensors of any kind.
In fact, your precious fuel injection starts running rich if the ECU thinks the engine is starting to cook. It's basic engine theory.
Burning lean will cause your engine to build up more heat anyway and good luck finding stoichiometric. Might as well go rich and have inherent cooling.

>Carbs and TBI are fundamentally different in how they use airflow
No shit but the engine draws that fuel in the exact same way.

>TBI superior by design.
lmao


>A carb needs to constrict airflow to generate sufficient signal. This means a huge carb pretty much has to be adjusted to LEAK fuel at idle
Yes the signal that's coming from the engine, in other words, vacuum.

>The TBI can run much leaner
So overheat and lean bogs

Since you don't know any better, the primary circuits on spread bore carbs achieve fuel economy and the secondaries give you power when you need it. People figured this problem out decades ago.

>A carb also doesn't shut off when engine braking
Neither do fuel injectors, ask Hyundai, or better yet hit your clutch and watch how long it takes for the ecu to realize you're idling.

> further widening the fuel consumption gap between it and TBI.
You clearly don't understand what causes poor fuel economy in carburetors. You should research things like accelerator pumps and secondary circuits.

>you DONT need to choose between economy and power.
Correct, the decision is already made for you.
I'll remind you that TBI is nothing like MPI.

>You said over half of this yourself and you still don't realize injection's superiority.
I've already said most of this because it's correct, but clearly nobody but me actually knows how carburetors work.

>>16876809
All sensors are included in the tbi kit you dunce.

Yes, vacuum like I've said twice already.

>Hyundai
Now I know youre just trolling, i rest my case.

File: DSC002671.jpg (2MB, 4912x3264px) Image search: [Google]

2MB, 4912x3264px

>>16874557

>>16876327
>Same thing FI, nothing.
>The only thing that can put more air into your engine at high altitudes is forced induction. Fuel injection doesn't magically increase atmospheric pressure.


this is so wrong, a proper EFI system compensates for air density, one of the most important sensors in an EFI system is an air density sensor. The computer can know exactly how much air is coming in and adjust fuel accordingly.
But this is for emissions/efficiency purposes, when it comes to just making power no care how much gas you care carbs are fine you're right

>>16876823
>All sensors are included in the tbi kit you dunce.
No shit, and it'll still attempt to burn rich if it thinks the engine is going to overheat.


>i rest my case.
nope.
That's a whole brand of cars where the fuel injectors are still running while coasting, that's a lot of cars.

Either way, when you're coasting with a carburetor it's still running on the idle circuit which isn't much fuel, you lose more gas by tripping an accelerator pump then coasting down a slight hill.

>>16876861
>this is so wrong, a proper EFI system compensates for air density, one of the most important sensors in an EFI system is an air density sensor.
That's not even relevant to what i said, fuel injection doesn't put more air into the engine, it only changes the a/f ratio to optimize the burn.

>>16873684
E39?

>>16876471
You think tuning a turbo carb engine is that easy? Lmao you idiot

Tuning a carb for forced induction, especially a turbo, is one of the most difficult things anyone could do
Stop Fucking Posting any time

>>16873826
>If you were trying to make a simple, rugged engine a carburetor would be a better choice.

no, that would be TBI.
2 injectors, 260,000 miles, 23 years, they've never been off the throttle body
>which has never been off of the intake manifold

>>16876877
Especially multi-carb'd setups.
Not only synching the carbs but running a blowthrough setup is a cunt.
https://www.youtube.com/watch?v=dskutHwOy7U

>>16876885
>no, that would be TBI.
No, that would be MPI. This isn't the mid 80's where fuel injection is still exotic.

TBI kits only exist anymore because Billybob is too cheap to run a proper MPI setup on his '60 Chevy.

>>16876862
Yeah, it leans out the mix to compensate for the reduced amount of air thus reducing power, but still running. A carbed car without changing the jets will just drown and stop

>>16876899
>A carbed car without changing the jets will just drown and stop
Bullshit, it'll run like shit but it won't stop running.

Don't sit here and try to convince me i need fuel injection to take my Cadillac up the side of Mount Everest.

>>16876899
m8 the car won't stop running just because you decided to drive up the rockies, what you're talking about is like airplane altitudes.

>>16876898
>TBI kits only exist anymore because Billybob is too cheap to run a proper MPI setup on his '60 Chevy.

or because its the golden combination of cheap, drops in, and just werks

>>16876951
>cheap
That's what i just said

>drops in
That's what i just said

> just werks
Cheap and Fast and just works don't belong in the same sentence.
IIRC even Roadkill had problems with EZ-EFI

I've heard they're the greatest thing from some people and others who have had the worst experiences with them.

>>16876973
nope you only said cheap

>I've heard they're the greatest thing from some people and others who have had the worst experiences with them.

I hear that from windows users too, the people in the latter group are usually incompetent or old

>>16877033
>nope you only said cheap
I know,
>drops in
is inherently cheap.
as opposed to fabricating manifolds for MPI which is not drop in or cheap.


>I hear that from windows users too, the people in the latter group are usually incompetent or old
I mean, you get what you pay for.
A $100 carb will be a piece of shit and so will a $700 TBI kit.
If you're going to convert to FI you might as well do it right.

File: 1450497199370.jpg (61KB, 500x375px) Image search: [Google]

61KB, 500x375px

>>16873699
>being a calicuck

this has gotta be bait

>>16875177
There are plenty of SU tuning tips online. The balancing tool is really all you need. Colortune won't give you a spark plug insulator color to examine. I have one but haven't used it in many years. Just toss in new plugs after adjusting then drive for a while and check plugs.

>>16875698
Carbs on bikes are an ideal application because usually easy to access.

I can cope happily with carbs and EFI. I prefer EFI on my trucks because I can leave them idle indefinitely while running a winch without loading up, and ethanol isn't kind to carb castings. On a bike I like carbs because I keep motorcycles for life and I don't let mine sit up without draining the carbs then running some fuel with STA-BIL through them.

Complainers are pussies. Use what you like but don't try to sell anyone else on it. /o/ is about shitposting.

Fuel system fuckups on carbs and FI get me vehicles cheap. I love ignorant owners and mechanics.

>>16876327
>No one in this thread could build a functioning carburetor from scratch.

I could do a single barrel carb like an S&S or Linkert from billet from scratch, slowly. There's not a lot to primitive carbs. Biggest pain in the ass would be forming and soldering a brass float. Early S&S came with cylindrical steel float needles which are easy to turn in a lathe.

>>16877178
Fair enough, I never considered the simple carbs.

my mum's Lotus Excel was twin carb

best noise i've ever heard from a car (at least in person), it set car alarms off in multi-storey car parks.

unfortunately the cost of keeping it running was totally insane by the time i was old enough to drive. fuuuuuuck meeeeeeeee

>>16877201
i forget what my point of this post was supposed to be

maybe don't bully carbs? pls? :c

File: 1472679640089.jpg (45KB, 681x496px) Image search: [Google]

45KB, 681x496px

>>16873699