Exhaust manifold info please?

[Bilgamesh]

Does anyone have an idea of what years/models of exhaust manifolds will interchange on a 74 Bronco 302. I think I have an exhaust leak at one of mine. - Thanks

 

[904Bronco]

Does anyone have an idea of what years/models of exhaust manifolds will interchange on a 74 Bronco 302. I think I have an exhaust leak at one of mine. - Thanks

Which side? Driver's I believe, is interchangeable accross many years. Passenger side has smog stuff as you get closer to 77. Choke preheat and preheat stove for the air cleaner. They all should work... Someone on www.norcalbroncos.com was selling a set I think.

See: http://www.norcalbroncos.com/forum/showthread.php?t=2415

 

[Bilgamesh]

The noise is on the passenger side. I can't quite tell if it is a lifter or leaking manifold.

 

[instigator]

if it is the manifold leaking , take it off and get resurfaced and install it with a new gasket. should be good to go

 

[blubuckaroo]

I just replaced the driver side manifold. It had a large area of tiny cracks. Looked like spider webs. Was leaking over an area over 6" long! Got a good used one from Toms. Came really nice. Cleaned, resurfaced. painted with new studs.
Saved again by Toms. My favorite place!

 

[Bilgamesh]

I got mine from JBG for $60 plus shipping. I was disappointed in the condition. It was totally rusty, dirty, and full of spider webs and dried mud in #4 port. I had to use naval jelly and sand around all the ports to get down to a sound mating surface. However, it was functionally sound and $39 cheaper than Tom's.

When I pulled the original, I could see #4 was leaking as there was only about 1/8" of surface left around the port. When I put the new one on, I was very happy to have no more ticking sound!