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[GMCnet] engine clicking... header leak... [message #142474] Mon, 05 September 2011 15:28 Go to next message
Ek_Lektro is currently offline  Ek_Lektro   United States
Messages: 167
Registered: March 2011
Karma: 2
Senior Member
> There is an issue with not taking care of an exaust manafold leak, over time the hot gasses will erode the head. In my case it necessitated removing the heads and having the manafold mating surface machined flat, not a cheap process.

That's what i thought. glad i asked. i'll handle it before i do any long hot drives...
Thanks all for your info!
cheers
Greg


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Re: [GMCnet] engine clicking... header leak... [message #142529 is a reply to message #142474] Mon, 05 September 2011 21:14 Go to previous messageGo to next message
hal kading is currently offline  hal kading   United States
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Registered: February 2004
Location: Las Cruces NM
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Greg,

Start soaking the manifold bolts with Aero Kroil several days in advance of trying to remove them. Bottom ends of most of the bolts are accessible in the spark plug recesses.

Hal Kading 78 Buskirk Las Cruces NM

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Re: [GMCnet] engine clicking... header leak... [message #142538 is a reply to message #142474] Mon, 05 September 2011 22:34 Go to previous message
armandminnie is currently offline  armandminnie   United States
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Registered: May 2009
Location: Marana, AZ
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Greg, my rebuilt engine came with some erosion caused by a exhaust leak. I kept having problems with leaks until I bought some Remflex gaskets from JimK and installed them according to the package instructions (low torque just once). I also installed exhaust manifold bolt locks (http://www.appliedgmc.com/prod.itml/icOid/763) so the bolts won't come loose due to the low torque and anti-seize I used. I have over 5K miles on since then and still no leaks.

Instead of Kroil I used ATF and acetone mixed 50/50. Worked great.

Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
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