Manifold pressure test

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Manifold pressure test


Post by haggis » Thu Jan 22, 2009 5:10 pm

Author: haggis

What are the requirements and sequence to pressure test my 50 el?
Also should I apply sealant to the intake manifold threads (Linkert/plumber style)
Thanks Haggis

Post by 1948pan on May 14, 2003, 9:12pm

I used a copper flake antisieze on my intake. As long as the rings (fereules) were in good shape, and the pipe was clean, I never had a leak. Just tighten each nut the same amount of spins, and wiggle the manifold into a centered position as you tighten, and check the nuts several times after running the motor ( the heating/cooling cycles will cause everything to seat). Keep an eye on the sparkplugs, and don't go WFO until you know there are no leaks.

Post by Cotten on May 15, 2003, 2:19am

Antiseize IS best, I agree.
But you never know for certain that you have no leaks unless you pressuretest. Why gamble?
You need a big cork with a hole in it, a regulator and gauge, a little hose and maybe a broken pen for a nipple,..
Try this Manifold leaktest
If that ain't a "live" link, cut'n'paste that url into your browser.

Post by haggis on May 16, 2003, 2:29am

thanks 1948pan and cotten,
some good helpfull info..I would advise everyone to check out the site that cotten suggested it is killer,
thanks again guys, Haggis

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Re: Manifold pressure test


Post by Mark44 » Mon Mar 30, 2009 7:31 pm

Try this Manifold leaktest
I found that link to be bad. I think this is the correct link.

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Re: Manifold pressure test


Post by panhead » Mon Mar 30, 2009 7:55 pm

Thank you, I repaired the link.

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