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04-20-2013, 10:58 AM
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#1 |
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Registered User
Join Date: Apr 2011
Location: greenville sc
Posts: 558
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No exhaust manifold gaskets when removed? do they need milled?
Removed for the 1st time my 87's manifolds restored them now ready to put them back on there were no gaskets when I removed them. Should I take them to a machine shop and have them milled incase they're warped any? or do they usually not leak when put back on?
thanks |
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04-20-2013, 12:24 PM
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#2 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: No exhaust manifold gaskets when removed? do they need milled?
I'd use a steel ruler or other straight edge to check
run it flush across them all not sure if you would benefit from running small grinding wheels inside to clean up casting marks etc fine sand paper the mating surfaces Posted via Mobile Device
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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04-20-2013, 12:27 PM
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#3 |
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Registered User
Join Date: Oct 2003
Location: houston, texas
Posts: 1,974
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Re: No exhaust manifold gaskets when removed? do they need milled?
buy the gaskets and put them on, they should have them. I restored mine and used gasket from kit and I have no leaks.
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2008 Silverado Z71 RCSB 1991 GMC Jimmy 4x4 1976 GMC Sierra C15 SWB |
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04-20-2013, 12:55 PM
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#4 | |
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Registered User
Join Date: Apr 2011
Location: greenville sc
Posts: 558
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Re: No exhaust manifold gaskets when removed? do they need milled?
Quote:
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04-20-2013, 12:56 PM
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#5 |
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Watch out for your cornhole !
 
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: No exhaust manifold gaskets when removed? do they need milled?
They never had gaskets originally but it's standard procedure to put gaskets in once they've been removed the first time. I wouldn't worry about having them planed. They don't usually warp appreciably enough to cause sealing issues when used with gaskets.
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04-20-2013, 08:14 PM
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#6 |
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Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: No exhaust manifold gaskets when removed? do they need milled?
My '86 called for copper RTV for the gaskets. Checked when I was trying to fix exhaust leaks.
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold  )I'm kinda like duct tape- no real purpose, but handy to have around. |
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