manifold pics for OldGrayGhost

[tgreese]

OGG, here are the manifold pics re the 258:

http://www.nmr.mgh.harvard.edu/~reese/underhood.jpg
Here is an under-the-hood picture showing the manifolds from a '85 CJ 258 now on my '77 truck. The intake manifold (IM) is aluminum and no longer has that stove between the intake and exhaust (where the heat riser flap is). Now the IM is heated by the cooling water from the radiator hoses. There is also an electric heater in the underside of the IM for cold starts, but I'm not using it.

The exhaust manifold (EM) can't bee seen very well, but it's cast iron and smoother than the original manifold. Becasue it comes out straighter from the exhaust port and bends more smoothly, the PS bracket must be notched to clear it (seen below). The AI nozzle holes are sealed with 1/4" NPT plugs.

http://www.nmr.mgh.harvard.edu/~reese/psbracket.jpg

http://www.nmr.mgh.harvard.edu/~reese/oldmanifold.jpg

Here're the old manifolds. The '77 originally used a 2V Carter BBD which I've replaced with the 2V Motorcraft seen above. You need one of the thick plastic insulators on top of the adapter so the throttle arm will clear the PB vacuum tap. The carb is just sitting on the manifold - the plumbing and cables need to be attached, and I have to rig some kind of air cleaner.

hth :cool: Tim

[The Anti-Chrysler]

Looks good - what did you use to coat the exhaust manifold?

[tgreese]

Ha - nothing fancy. Rustoleum brush-on barbeque black. I expect it'll burn off, but it looks ok now.

I bought a half-pint of the POR-15 manifold paint, but they recommended sand blasting or (hours of) wire brushing. A local shop wanted $50 to blast the manifold, so I cut my losses and used the cheapo bbq paint. A little can of the rustoleum goes a long way - good for painting all sorts of parts.

regards :cool: Tim

[The Anti-Chrysler]

Oh, ok, I've used that stuff. It will burn up. I was wondering if you had used the POR-15 since coincedentially, I was thinking of using on manifolds for another project. I would think that unless your manifold is really heavily crusted up, a good once-over with an angle grinder with a knotted-wire brush should do the trick. I did my whole J-10 replacement frame with that in just a few hours.

I wonder if anyone else has used the POR manifold paint?

[tgreese]

Good advice Jason, but I'll have to wait till I get a driveway to use power tools outdoors.

[OldGrayGhost]

Thanks Tim! Looks great I think I may have a lead on it allready.