From: Fred Martin (mung@in-touch.net)
Date: Wed Sep 29 2004 - 07:13:48 PDT
Mike, it is one heck of a job to re-machine the flanges on a manifold
because of the special fixtures used when manufacturing them. I have
found thru experimentation that a decent industrial belt sander will do
a respectable job. It needs a fairly long flat surface under the belt
and you just sock the manifold on it and slide it back and forth, then
yank it off and check your results. On and off fast keeps you from doing
uh-ohs as much. I've done several like this and no rejects yet...your
mileage might vary. Fred Martin
Mike and Cheryl wrote:
> I have NOS intake and exhaust. I bolted them together
> to check surface of ends. Both outside exhaust
> flanges (part toward block) are slightly lower than the rest.
> I am going to have them planed. The rest isn't perfect, but
> close. My gaskets look a little thicker for the outside, but they
> are punched with a small burr and others are smooth (no burr).
> My question is should flanges all be flat and level or is there a
> difference. Is there a specific instructions that should be given to
> the machine shop on method or what I want done. I can't see any
> reason they should be offset, but for what it would cost me if I
> screwed up, I figured I could afford the electricity for an email.
>
> What grade of bolt should be used to bolt together manifolds?
> Ord9 lists Screw, hex-hd, 5/16-18NC-2 X 2 1/2
>
> Thanks
> Mike in Iowa
> mleaton@netins.net
>
>
>
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