best carb for blow thru turbo setup
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best carb for blow thru turbo setup
i am ready to turbo my 12A and was wondering which carb to use. i was going to use my R.E. dual DCD's but nobody makes a carb hat for it. so now i want to buy another carb and intake manifold. any suggestions would help. thanks
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Yeah, shutup kid.
Joined: Mar 2002
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From: Columbus, OH
Weber 48 DCOE is probably the best. The IDA is a better carb for N/A, it flows nicer. But when you use a turbo, it forces the air through either way so the slightly better flow of the IDA isn't worth the cost difference.
I havn't heard much about the holley, but I think it drives smoother and gives you a bit better mileage than the weber, but doesn't make as much top end power.
The nikki is probably the worst on gas out of the 3, but it drives smooth and gives good power. It should also be easy to tune, the only difficult thing is getting rid of a small bog when you suddenly floor the pedal.
So, the nikki is cheapest by a couple hundred $. The weber is $550 for the 45dcoe(best for stockport) and $675 for the 48dcoe(best for streetport) from rotaryshack. And the holley is about $800 from racingbeat. Decide for yourself which one suits you best.
I havn't heard much about the holley, but I think it drives smoother and gives you a bit better mileage than the weber, but doesn't make as much top end power.
The nikki is probably the worst on gas out of the 3, but it drives smooth and gives good power. It should also be easy to tune, the only difficult thing is getting rid of a small bog when you suddenly floor the pedal.
So, the nikki is cheapest by a couple hundred $. The weber is $550 for the 45dcoe(best for stockport) and $675 for the 48dcoe(best for streetport) from rotaryshack. And the holley is about $800 from racingbeat. Decide for yourself which one suits you best.
Last edited by coldy13; Jan 8, 2004 at 01:22 PM.
Originally posted by krazy_1st_gen
the R.E. dual's are pretty good in the low's and mid's not all that good in the top end.
the R.E. dual's are pretty good in the low's and mid's not all that good in the top end.
or if you want to keep good low and midrange, just enlarge the chokes on the secondaries.
Yeah, shutup kid.
Joined: Mar 2002
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From: Columbus, OH
Just found out a bit more about using a weber 48ida for blow thru, IT DOESN'T WORK. Well, it kinda does, but the floats are hollow and will get crushed after a couple minutes, and if you try to fill them to make them solid, they no longer work right and it'll run like complete ****. If you want a weber for blow thru, stick with the DCO.
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Joined: Oct 2002
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From: Chesapeake, Va
The floats on my WEber 45 dcoe are the new-style plastic hollow floats. Is this going to be a problem for use on a blow-through setup? I just rebuilt the carb, so I have a better understanding of how it works, but are the brass floats such that they will fit right up to newer dcoe's?
Originally posted by coldy13
I havn't heard much about the holley, but I think it drives smoother and gives you a bit better mileage than the weber, but doesn't make as much top end power.
I havn't heard much about the holley, but I think it drives smoother and gives you a bit better mileage than the weber, but doesn't make as much top end power.
raysspl.com
Joined: Sep 2003
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From: L.A.
Originally posted by coldy13
The nikki is probably the worst on gas out of the 3, but it drives smooth and gives good power. It should also be easy to tune, the only difficult thing is getting rid of a small bog when you suddenly floor the pedal.
The nikki is probably the worst on gas out of the 3, but it drives smooth and gives good power. It should also be easy to tune, the only difficult thing is getting rid of a small bog when you suddenly floor the pedal.
wait wait... so the RX-2 nikki carb. i have right now actually consumes more fuel than the 48 DCOE and IDA carb. setups? While the holley reigns top on gas mileage? How come the nikki would consume more fuel?
Yeah, shutup kid.
Joined: Mar 2002
Posts: 1,686
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From: Columbus, OH
Well, my blowthrough nikki is getting 8mpg right now, and I know people with webers are getting 10-15mpg. I'm really not sure why though. I'll be switching to a Weber 48 DCO-SP soon, so I'll be able to compare the two first-hand.
Yeah, shutup kid.
Joined: Mar 2002
Posts: 1,686
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From: Columbus, OH
Originally posted by seanrot
hey coldy13 where did you get that run for **** info? I knew about the hollow float though..
hey coldy13 where did you get that run for **** info? I knew about the hollow float though..
Originally posted by coldy13
I found that out from Robert. He tired to use the IDA, but the floats would always get crushed. So he filled them with an expandable foam to make them solid, but doing that changed their bouyancy(sp?) so it ran like ****.
I found that out from Robert. He tired to use the IDA, but the floats would always get crushed. So he filled them with an expandable foam to make them solid, but doing that changed their bouyancy(sp?) so it ran like ****.
When Im ready to do the blow thru conversion, I will play with the IDA. Depending on what JC enterprises recommend, I might end up with 4 progression holes since they have done turbo VW with IDA. Plus, I have one more idea to add-in for fuel enrichment. Also, there is another crew here in LA who are currently experiementing with IDA. Got to learn from their mistakes....including my own.