Corvette base + F-body fuel rail = Leak? - Third Generation F-Body Message Boards

vindeezl · 02-28-2010, 04:09 AM

I installed ZZ4 heads and cam on my 1991 roller L98 motor, so I threw on a Corvette TPI base and it bolts right up.

Problem is, it seems the factory F-Body rail sits too high on the base and does not allow the fuel injectors to seat properly and eventually a couple of them will start leaking (badly)..

How should I fix this problem?

I do not have a Corvette fuel rail (just got the bare base) and was told the inlets on the TPI Corvette rail were different anyways.

vetteoz · 02-28-2010, 06:21 AM

Quote:

Originally Posted by vindeezl

Problem is, it seems the factory F-Body rail sits too high on the base and does not allow the fuel injectors to seat properly

Are you using factory injectors?
You may have to file the 4 rail mounting bosses down a little to get a tighter injector fit ?

vindeezl · 02-28-2010, 06:37 AM

24# blue tops

vindeezl · 03-05-2010, 07:25 PM

bump

Should I grind the manifold? Bore out the fuel rail?

Drew · 03-05-2010, 08:10 PM

Some fuel injectors (notably Ford injectors) are a bit shorter then stock TPI injectors. If that's the problem you're having, there are enough people that have worked around that problem that a search should give you the answer you need. I'm willing to bet it has nothing to do with the Corvette base.