The truck overheated, Blew the head gasket. Pulled motor apart, replaced all the gaskets, and noticed the head had a crack in it. So I replaced the head head today and when I put it on the block to bolt it down it rocks back and forth a little bit. It doesn't sit level on it. My worst fears would be a warped head but im unsure. Any helpful ideas?
2007-06-05 05:22:11 · 5 answers · asked by thugshady06 2 in Cars & Transportation ➔ Maintenance & Repairs
There should be two little steel pilot bushings or pins to align the head on the engine.
Make sure there is not a bunch of crud in the ports the fit into.
Those little pins or bushing do come out.
ADDED:
Personaly, I've NEVER seen a warped block.
Cracked? yes, but not warped....
2007-06-05 05:27:45 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
Engine blocks don't warp like a head does, but the gasket surface can develop "waves" which if bad enough, require planing. Minor waves are what the gasket corrects.
It sounds to me like you have the gasket on wrong.
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There are some metal grommets that insert into some of the bolt holes. They are there to insure that the gasket material doesn't squeeze into the hole around the bolt, which allows oil to travel up into the head. The grommets stick up a little ways and help position the gasket. Some engines use a hard plastic grommet instead and some use "o" rings for the same purpose.
Make sure they are seated properly and that the gasket says "this side up" when you place it on the block. You'll notice that some of the bolt holes in the gasket are larger then other bolt holes. The bigger holes fit around the grommets.
Make sure the grommets aren't distorted, sometimes you can fix them other wise buy new grommets.
Then carefully lay the head straight down and tighten your bolts evenly to just snug. Then torque each bolt in the proper pattern in 50 pound increments.
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BTW-if you had tried to tighten the head down and it rocked, buy a new head gasket. Never re-use a head gasket.
2007-06-05 12:42:59 · answer #2 · answered by MechBob 4 · 0⤊ 0⤋
Using a straightedge, like a metal ruler, check your block deck surface in an X pattern, and lengthwise. Use this method on the head as well. If there is any gap or rocking motion, the surface is warped. As a general rule, the block won't warp too bad. I've melted pistons down and not hurt the block.
2007-06-05 12:31:36 · answer #3 · answered by koshkateer2 2 · 0⤊ 0⤋
like he said. if the head was milled before you got it then the block will be.
2007-06-05 12:28:25 · answer #4 · answered by oneracer02 1 · 0⤊ 0⤋
did you have the head milled if yes then it's most likely the block ...
2007-06-05 12:26:25 · answer #5 · answered by Timothy S 6 · 0⤊ 0⤋