Thread: Exhaust leak on manifold

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Originally Posted by Lefcrak

The heads are good it's just the manifold that's screwed up. I've got another manifold I can use it is very similar and a lot cleaner, but I don't know if it will cause it to breathe differently. The casting numbers are 3932469 (the bad one) and 3932473 (the good one). the only big difference I can find is the bottom of the good manifold has a block which would push my down pipe about an inch or two down further. I'll have supporting pictures later tonight.

The video was not necessarily only about re-surfacing a cylinder head, it was a tutorial showing how to re-surface and level parts at home for cheap. When I replied, I did not mean that I have done heads like this, I haven't. But I have used this procedure for leveling other parts in my home garage and it works great. If you tightened your manifold up in a vise and used the procedure shown, you would end up with a perfectly good manifold that would hold gaskets very well. Make your board long enough to be able to stroke the entire length of the 4 ports. I further understand that you probably don't want to buy a precision straightedge, I just included that for the other members of this forum so that they would have a source for it. If you use particle board and cut a band of paper that is normally used on a powered belt sander, you can make this tool for cheap. Here, for instance, is a belt 4" wide by 21 3/4" in length for 3 bucks. Cut it, lay it down on the particle board and use Gorilla glue to secure it.
http://www.mscdirect.com/product/det...gle-PLA+-+Test

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