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Dual Carb Question/Weber question too
Posted 23 October 2003 - 09:29 PM
How the heck did they ever come up with the abbreviation BBL for barrel?
When utilizing dual carbs, they have to be exactly the same and also tuned or set exactly the same correct? I know on motorcycles they do but I don't know why I feel so stupid right now, I am asking. So if I put dual webers on my car, how come VW's can do it but some here say it's too much gas for our subes? They are approximately the same CC's. Or are they using smaller carbs? If I use 32/36's can't I just re-jet them so they are "smaller"?
Posted 23 October 2003 - 09:36 PM
Posted 23 October 2003 - 09:56 PM
Posted 24 October 2003 - 11:39 AM
The FAQ at www.subspeed.com suggest the Weber 34 ICT, or similar, for the single port heads, but say require the fabrication of custom manifolds to mount. (I wonder if you could adapt them to the Asian market OEM dual carb manifold?)
Posted 24 October 2003 - 11:45 AM
Posted 24 October 2003 - 11:52 AM
linkage, how will you work throttle brackets? mechanical linkage, or two accelerator cables?
need to split the fuel lines, fuel return lines... one of each for each carb.
need either a dual carb manifold (RARE) or to get two single or two double barrel carbs and fab up your own intake system.
need to run vacuum lines from both carbs/manifolds to even it out.
you could do a dual weber 32/36 or a dual 34ICT, but you'd either need a complicated dual intake setup with interesting routing for the coolant, or to build your own manifold with two carburetor bases. either way, lots of time and/or money.
If dual hitachi manifolds were only less rare, the world would live in harmony. (or at least, would be closer to world peace.)
oh, and I took a look at a two barrel off an old Mazda... and it looked nearly identical in mounting of that of an EA81... but I doubt it's a good performance upgrade... looks like same barrels.
Posted 24 October 2003 - 11:55 AM
Originally posted by PHATBRAT
I already have the dual carb manifold (For EA81) and the stock carbs with it. I wonder if I can just call or email a place that deals with webers and give them the type and part number and they can give me an equivolent weber for each carb. I would still have to get some cam work done and heads and maybe a few more tricks up the old sleeve. This probably won't happen for quite some time though. Boz
He's got the dual carb manifold (lucky bastage ). If you know the manufacturer and model number of the stock carbs, you should be able to look up the appropriate Weber conversion. I'd poke around the Redline Weber website and see if you can find the stock carbs on a conversion table...
Posted 24 October 2003 - 11:55 AM
I don't think a dual carb setup would really show it's full potential until people made the engine breathe better (better flowing exhaust, better intake system, ported... polished... good cams... ect.)
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