Carbs.

[e30Matt]

f1 uses special fuel as well.

I would think the FI would always coem out on top.

Many race series use "special fuel" if you define it as anything other than what you can get at the pump.

Heh... true dat.

It'd be sweet to be able to run methanol in an E30. :)

[kylebes1]

14k rpm m20 would be cool as well

[M-technik-3]

Nascar rules date back to when time began hence the carbs. Rusty Wallace took his restrictor plate off at one of the super speed ways for giggles and ran flat out by himself at 235 mph.

Granted nascar has 600 hp and aero package so it easily possible. Carbs do work well but do NOT take atmospheric conditions into affect. Hence Carb icing on venturi's when was the last time you saw you FI system ice over with the exception of maybe the past winter due to the extreme cold. I can remember havine a carbed Capri and having that issue, Sucks ass. Choke add more fuel wrong answer gets worse.

Within reality FI is the way to go. If you want to be differant look for an old Weber sidedraft unit for an E21 323. Just don't run it in the winter as synchronizing 3 carbs together is a PIA.

[kylebes1]

Carburetors = giant fuel leaks.

I am with this guy, Nascar cars get like waht 8 mpg?

[e30Matt]

Carburetors = giant fuel leaks.

I am with this guy, Nascar cars get like waht 8 mpg?

22 gallons of fuel / 40-45 laps at 1.5 miles apiece = about 2.75mpg.

Great gas mileage. :)

Some guys run slightly smaller carbs to bump that number up, though.

(My uncle used to work for a NASCAR team.)

[EverWiser]

Carbs rely on a good vacuum signal to meter the fuel...Add a lumpy cam with a lot of overlap and low vacuum signals and with carbs your lumpy idle gets worse because your vac signal is lumpy causing inconsistent fuel delivery at idle. This means it's a real PIA to drive around at idle or just off-idle and generally you have to set the idle up to 1000 rpm or higher to keep the car running. FI doesn't have to rely on the vac signal so low end drivability is maintained even with aggressive cam profiles. FI is definately the way to go from idle to redline and all around performance.

[e9nine]

How many of you have driven a car that runs on carbs?

I have ridden/ driven in Carbed Peugeot 504/505s that killed 318 (m42) and 320 e30s as an example

I know the reason I asked the question bcos I have driven normal carb'ed cars and driven ancient FI, modern FI and stand alone FI cars.

Don't knock on a nicely tuned carbed motor. It does have its limits but it's still purposeful for certain car and motorcyle motors

Times have changed though...when CIS injection was out and people were the master tuners of Carbs no one thought FI would ever get better :twisted:

[EverWiser]

I'm not knocking carbs...For a part-time ride they would be a definite "WOW" factor. That said, however, if you drive your car all the time through any kind of weather and take it on trips through varying altitudes you can't top a properly operating closed-loop FI system. If you only drive your car in SoCal or Florida or the track and/or don't have to deal with months of erratic and/or cold weather by all means slap some carbs on there and be happy with a "different" E30. Otherwise trick out the FI system and be comforted in that whatever comes your way you'll be covered.

[e9nine]

..yeah just wanted to state those points beacuse it looked like people were saying carbs are 100% garbage. I concur with the other side to them especially the points some of you made about the weather factor.

[LowR3V'in]

How many of you have driven a car that runs on carbs?

I have a honda that has a really mild cam in it. :?:
I've also drivin a nova and couger with some MASSIVE cams and there isn't any drivability problems at all. Driving in parking lots Is great, there's nothing wrong with the cars, throttle responce's are 100x better than any of my fuel injected cars..

BTW: MPG on the nova is 14.. :shock: Not that bad for a 350? :oops:

[Jand3rson]

Doesn't that guy Skat or whatever his name is have a car with a carb'd S14?

[M-technik-3]

I still have a carbed vehicle my wifes beetle convertiable. As long as the storage company has stolen destroyed or sold during when we have been in Germany.

[UNHCLL]

I still have a carbed vehicle my wifes beetle convertiable. As long as the storage company has stolen destroyed or sold during when we have been in Germany.

Was it yellow? WE just resto'd one last year that had been "in storage" for 4 years...

[M-technik-3]

Nope Chris it's a nice Burgandy style color. It needs some serious work but you don't go giving away 58 with Hubermiller tops. Granted it need a full fabric cover but the wooden bows were intact and it has a whopping 36 hp.

[Rob]

so wait, nascars gets bad mileage, therefore carbs are inefficient? wow, thats reasoning as retarded as i've ever heard


Properly adjusted carbs, like the webbers I had in my Porsche, got over 24mpg on the highway, not too bad for a 1972 motor and short gearing