i'm not sure i'm in the right place to ask this. i have a particular application for a Edelbrock Performer 4 barrel carb that requires it to be mounted backwards. i have had several people tell me it won't work, and that it has to be facing the right direction. so i'm here where the wisdom is, what you say?? Jay D.
Shouldn't matter. ask those same people how people are running Holly's sideways. Primaries and secondaries are still being drawn by vacuum into the same common plenum
I believe that Eddy carb don't care which way its facing. Now......if we;re talking drag race acceleration where the fuel could slosh backward (forward to the primarys) that might give an issue.For street rod use it should work so long as the linkage is sorted out ..... 6sally6 Need pictures !!!!
It's a square bore so that's not gonna matter, float configuration is still gonna be basically the same, I see no reason why it won't work
its for my boys hot rod VW bug with it mounted in the rear its going to be backwards on acceleration. word is that it will continue to accelerate with the throttle off. could the secondary's flop open on hard acceleration?? Jay D.
this get confusing. but on the VW the throttle cable ( YOUR facing towards the front of the car) is to the left of the carb so with the carb linkage on the left side its facing to the front like it should. problem is the carb linkage is backwards. insted of pulling towards the front of the car as normal by the cable to open it, the carb linkage has to travel back towards the rear of the car. buy rotating the carb ( now the front of the carb is facing to the rear of the car) BUT now the carb linkage travels forward and we can buy a mount with the cable to fit. now i'm back to the delima of will the carb work ok accelerating backwards ??? THANKS Jay D.
YEP, we tried a couple different designs, but non worked vary good. we tried a bent tube to run the cable through and pull the throttle lever back it was to stiff. we then tried a wheel we could never get it to pull correctly either easy and not enough or hard and good throttle travel. Jay D.
No, the secondary air valve is above the butterflies, and they are mechanically actuated. I suppose the air valves might open early on low rpm WOT, but I doubt it. Way OT, but if that’s some kind of welded box steel manifold on the air cooled motor, good luck. They don’t even begin to atomize the fuel unless it over 80 degrees out. Had that problem about 1976 on one of those.
I think you are talking about the air valve on the carb secondary's. It isn't the secondary throttle, the throttle plates are below the air valve. It's purpose is to prevent air flow through the secondary's to smooth the transition when the secondary's are opened (prevent a flat spot or bog). If it were to stick open, the fuel flow in the secondary's would still stop when the secondary throttle plates are closed via the direct linkage. The air valve also doesn't know or care which way the carb is oriented.
Thanks for all the good ideas and reply's! I really don't know what i'm talking about. i'm just trying to figure out whats going to happen if its turned around ( pointing away from acceleration) you guys know way more than me!!! a friend of mine tried one backwards and seem to think it might be fuel in the float bowl causing the problem. i'm getting to the point that i should just do it and see what happens ??? I have the same carb on my street rod, it mounted SIDE WAYS on a supercharger and it runs perfect. i don't notice anything when cornering hard. Jay D.
I've run Holley's and Rochester's backwards and both worked fine. I don't see why it wouldn't work on an Edelbrock. Of course, don't try it with a spread bore.
The factory 3 X 2 setup for the FE blocks had the three Holley 2 bbl carb mounted backwards. They needed to do this because the front carb fuel bowl ended up right where the distributor was.
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