Well I will start out by giving a little background info. I’m rebuilding a pair of Holley 92’s basically a 7/8” base Holley 94 for my A banger. I installed new throttle shafts from speedway after I had them reamed to correct size and did a little polishing on the new shafts they turn freely. The issues I have are the accelerator pump arm in the second throttle actuator hole will not go full throttle because of the Allen head screw that holds it on to the new speedway shaft hit the link. And the other is the accelerator pump spring will not return the throttle to the closed position. It does not have the pump return spring like on the 2100’s. Has anyone else had these issues I’d so I did you fix them. Thanks in advance Ben.
Here are a couple pictures the one has the point of contact circled. And the butterflies pic shows the aren’t all the way open yet. The last is a picture of the accelerator pump and 2 of the links which look to be the same and interfere the same.
Well I guess the only way to fix the pump rod interface is to do some slight “modifications” which is silly I think. On the other issue has anyone used those accelerator pump return springs that go under the pump to help return it or used any other other methods? Or is this just how they are and a throttle linkage return spring is needed?
I would move the accelerator pump linkage to the third hole. It would seem that you would gain clearance on the linkage, and the butterflies would then have the ability to go full open.
Put a countersunk screw in place of the allen screw. If you don't have the proper counter sink then grind a drill that is just a hair over the diameter of the head of the screw with the correct angle. Be careful when counter sinking the plate that drill doesn't grab. Screw would then be flush. You need to be able to utilize all three holes for tuning. Don't put a spring under the accelerator pump. Just use a return spring on your throttle linkage. Pump moves a different distance when changing holes.
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