Head Bolts. Sealant? or no sealant? - Defender Source
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Old January 18th, 2005, 10:27 PM
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Hans Haase
The D-90.com Lab Rat
Join Date: Oct 2003
Location: Long Island, NY
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Head Bolts. Sealant? or no sealant?

No book, and it was too damned cold and I forgot to check something when I had the heads off. Figured I would ask before it's too late to correct a wrong situation.

Do the head bolts on a 3.9 enter into the cooling jacket and need sealant? Or are they plugged holes at the bottom and don't need sealant? The old ones look like they didn't have any sealant on them, but I figured I would ask either way.

Oh, and does anybody know what size socket I need for the valve cover bolts? Damned 12pt bolts, I need a new socket, but it's 6 degrees out right now and I don't feel like checking at the moment.


My oil line fix

My 100k stopped odometer fix

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Old January 19th, 2005, 11:42 PM
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Robert Dassler
1994 D90
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Join Date: Apr 2004
Location: Albuquerque, NM, USA
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Head bolts do not need sealant...lube the threads and under the heads with light oil like ATF when assembling...make sure the bolt holes are clean and dry. Valve cove bolts are 8mm or 5/16 12pt.
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