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#1 |
Registered User
Join Date: Jul 2008
Location: Conway, AR
Posts: 11
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Exhaust Manifold Resurfacing?
Guys, I need some help. I'm restoring a 66 C10 with a 250 and it's my first build. I'm learning as I go so bare with me if this is a dumb question. My exhaust manifold is pitted and needs to be resurfaced. My question is do I need to send in both the intake and exhaust manifolds to be resurfaced so that after they are bolted back together they will sit flush against the head? Or, do I only send in the pitted exhaust manifold for a shave and the tiny gap created between the exhaust manifold and head, because the intake is a little longer, will have no negative affect?
My gears are grinding in my head because I can't seem to find any answers for this...whats the use of google when it can't answer everything. ![]() |
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#2 |
Junior Member
Join Date: Dec 2006
Location: Newburgh, IN
Posts: 1,247
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Re: Exhaust Manifold Resurfacing?
All three will give a nice flush fit, but I just did the intake and head.
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#3 |
Resistance is Futile
Join Date: Dec 2006
Location: Mesa,Arizona
Posts: 3,520
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Re: Exhaust Manifold Resurfacing?
I think I would send/take both and ask the machinist. Do they both use gaskets that are similar or that change the gap? You definitely dont want the intake leaking.
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64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device |
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#4 |
Registered User
Join Date: Jul 2008
Location: Conway, AR
Posts: 11
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Re: Exhaust Manifold Resurfacing?
They both use the same gasket. A buddy of mine along with ol Curt both said the same thing. I think I'm more worried about too much being shaved off and the gasket not sealing properly.
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#5 |
Resistance is Futile
Join Date: Dec 2006
Location: Mesa,Arizona
Posts: 3,520
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Re: Exhaust Manifold Resurfacing?
Im not that familiar with the 6's. I know the intake and exhaust fit together. Have you thrown a staight edge on the parts just to eyeball it? Maybe some sealer on the exhaust would do the trick.
If the parts arent warped, I wouldnt machine them unless the pitting is bad.
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64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device |
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#6 |
Registered User
Join Date: Jul 2008
Location: Conway, AR
Posts: 11
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Re: Exhaust Manifold Resurfacing?
I tried adding filler a while back but it didn't do any good. The paste didn't hold and ended up blowing out. I only have a pitting problem with the 6th/rear cylinder but other than that it's pretty flush/straight.
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#7 |
Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: Exhaust Manifold Resurfacing?
back when I was a mechanic for a living, after resurfacing, we would use anti-seize (sans gasket) it is high temp and fills in any perfections. I realize it may sound crazy, but it works!
dunno for sure about you six, but on a ford I-6 we would send the intake and exhaust out together to get resurfaced....
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![]() ![]() Last edited by joe231; 01-13-2009 at 12:38 AM. |
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#8 |
Registered User
Join Date: Jul 2008
Location: Conway, AR
Posts: 11
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Re: Exhaust Manifold Resurfacing?
I never thought about putting anti-seize on an exhaust leak...what would keep the pressure from blowing it out? Fixing this exhaust leak is the last thing I need to do before the engine is back to purrring. I traded my motorcycle for this truck....then realized how much work it needed. Totally worth it!
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#9 |
Registered User
Join Date: Jul 2008
Location: Conway, AR
Posts: 11
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Re: Exhaust Manifold Resurfacing?
The machine shop said to bring in both since they bolt together. Same price which makes it even better. Thanks for the help guys.
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#10 | |
Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: Exhaust Manifold Resurfacing?
Quote:
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#11 |
Resistance is Futile
Join Date: Dec 2006
Location: Mesa,Arizona
Posts: 3,520
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Re: Exhaust Manifold Resurfacing?
Right on Joe.......my 90SS454 had a rebuilt engine and thats what they used on the manifolds. I didnt know what it was, thought it was just a regular type sealer.
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64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device |
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#12 |
Hey Y'all!!
Join Date: Dec 2007
Location: Bay Minette, Alabama
Posts: 1,755
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Re: Exhaust Manifold Resurfacing?
Didn't know that. I'll have to store that in the old data bank for future reference.
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Just hopin' I live long enough to finish something!!! |
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Tags |
250, exhaust, inline 6, manifold, resurfacing |
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