what carb for turbo?

[Guest timhypo]

There was an article in Grassroots Motorsports a couple months ago about a guy with a carbed blowthrough setup on an L28. Believe he was running a Holley 600 with a 'collectors item' intake manifold and a water-to-air intercooler. Good setup if you like tuning quirky fuel-delivery problems, otherwise sounds a bit too frustrating to be worthwhile, especially considering the number of turbo ZXs rusting away and ripe for the picking on a swap. Incidentally, I think the guy in that article ran an L28E (fuel-injected) block so he could get the low compression necessary to facilitate his high boost (18PSI?!?).

[Guest Anonymous]

This is a decent page when speaking of terms of blow through carb systems. The sight is actually devoted to supercharged blow thru systems on old paxton/mccullogh superchargers but the carb information is useful. From my own research your best bet will be a Carter AFB /Edelbrock with a few mods. The holley's will work, but you'll need to do a few more things to them, and it'll have to be a mechanical secondary carb in any event. Anyway, some of this material is for older carbs, but the AFB information is relevent and I believe quite good. They have seen 8 lbs of boost without going to solid floats and over 18 lbs with solid floats is no problem without a carb box (even more with a enclosed carb housing). Check it out:

 

http://www.vs57.com/carb.htm

 

Regards,

 

Lone

[Guest bigjim240z]

ok what carb would be best for a carbed turbo setup?..holley, carter, edelbrock?...will they be able to handle boost without blowing out the throttle shaft bushings?thanks jim