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10-15-2015, 01:27 PM
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#1 | |
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AF Newbie
Join Date: Sep 2008
Location: Plymouth, Minnesota
Posts: 17
Thanks: 2
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2004 3.4L GM Deck Height
I think I may have a problem. Head gasket blew. When taking off the heads a noticed severe (deep) machining marks on the decks (probably there since engine was built) and some corrosion around a water passage. Took the engine to a local engine shop. He said he could take some off the top. I said ok. Now during reassembly the pistons stick out above the deck at TDC. is some protrusion as designed? Piston travels .025" above deck now.
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10-15-2015, 05:47 PM
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#2 | |
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A990 racer
 Join Date: Mar 2002
Location: Chestertown, New York
Posts: 16,988
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Re: 2004 3.4L GM Deck Height
How much did he take off the deck, what is the stock deck height, machinist should have this info and acted accordingly!
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10-15-2015, 09:38 PM
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#3 | |
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AF Newbie
Thread starter
Join Date: Sep 2008
Location: Plymouth, Minnesota
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Re: 2004 3.4L GM Deck Height
He said just .006" was removed, and it is normal for the pistons on this engine to protrude from the top of the deck. True??
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10-16-2015, 07:37 PM
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#4 | |
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A990 racer
Join Date: Mar 2002
Location: Chestertown, New York
Posts: 16,988
Thanks: 25
Thanked 380 Times in 372 Posts
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Re: 2004 3.4L GM Deck Height
Don't have the blue print specs, but .006 shouldn't be an issue.
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