Cracked Exhaust Manifold Questions

[A.Bursell]

Originally Posted by Gumby

I gut the heat riser valves when I find them, and just weld the shaft holes shut so its just a pass through.

Would it be fair to say then that if I have the valve open and I'm still seeing this problem, the valve is not the cause?

What goes on between the intake and exhaust manifolds above the valve, could a leaking gasket between the two cause a problem like this? Or would it just be an exhaust leak?

Adam

[Gumby]

I just don't like the interupted exhaust flow, you could just wire it open for a test.

[geezer#99]

Or wire it closed!!

[GRX]

nm

[A.Bursell]

Well, it's been a strange couple days. I'm not sure exactly what the problem is. The truck is running great right now. I played with the heat riser and the carb and the timing and overall I don't think I really changed anything. But it's running great. I'm thinking something is sticky--maybe in the carb. Still keeping an eye on the heat riser. I think I'm going to put a kit in the carb next and see how it goes. As it turns out, it is a Rochester carb. Either a model B or M...I have the numbers and it seems to be listed as both?

Any preference on kits for completeness and quality of parts and instructions?

Adam

[Gumby]

all girls [flesh or steel] just want some attention at times

[crazy longhorn]

Originally Posted by Gumby

all girls [flesh or steel] just want some attention at times

2nd that....just show her that she is your "best" baby girl All jokes aside,you might had a bad load of gas? (the truck)LOL! Maybe a little trash or moisture in the system....toss a little Heet in the tank, & see how she rolls. Best of fun, crazyL