Greg Gowins wrote:
Now here comes the but...
> I put everything back on the engine, and when I started the engine, she
> fired right up. But instead of idling, the RPMs kept rising, quickly. Shut
> everything down, checked the obvious, like the throttle return spring or a
> sticking choke. Everything checked out fine. A little more research, and I
> was leaking gas below the intake manifold ports on the head. No prob, I
> must not have tightened the bolts down enough. Rechecked and they were
> fine. A little more looking, and I realized that the middle tube of the new
> exhaust manifold was supporting the intake manifold keeping it from seating
> down all the way!!! It was short of seating on the gasket by about a 1/8 of
> an inch on the bottom of the intake port.
This is a common problem with mismatched manifolds. At least for me
Usually I have to grind off a bit on the intake.
You do have a quick temporary fix. loosen the 4 intake nuts, slip a
split washer on the intake side of each stud, tighten the nuts. It works
Or grind a bit of the exhaust off, look at the back side, there may be a
weld ridge in the way.
Toms River, NJ
60 Bugeye Sprite (my car)
67 Sprite (wife's car)
59 Austin A40 Farina w/AC (daughters car)
71 MG Midget racer (working on it)