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05-13-2021, 12:32 PM | #1 |
Registered User
Join Date: Jun 2014
Location: sacramento, California
Posts: 28
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L6 250 12bolt valve cover
Okay has anybody had any issues sealing up the valve cover on this?
I have a new one and I cannot seem to get it to seal up. what bolts do you use, what style gasket do you use. thanks ahead of time. Also for those of you who use heated intake manifold how do you guys run your hoses to the heater? |
05-13-2021, 01:22 PM | #2 |
Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,388
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Re: L6 250 12bolt valve cover
Stock valve cover? flange on the cover flat and straight? type of gasket--(rubber, cork, rubberized cork)? bolt spreaders? any sealant?
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05-13-2021, 01:27 PM | #3 |
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Join Date: Jun 2014
Location: sacramento, California
Posts: 28
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Re: L6 250 12bolt valve cover
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05-13-2021, 05:46 PM | #4 |
Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,388
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Re: L6 250 12bolt valve cover
I'd lay a straight edge on it to verify flatness then use a cork gasket. If you have an '' inch pound torque wrench '' I'd take em to about 110
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05-13-2021, 07:02 PM | #5 |
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Join Date: Jan 2013
Location: Calgary Alberta
Posts: 1,164
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Re: L6 250 12bolt valve cover
With whatever gasket I use silicone on both sides and put the bolts in finger tight. Next day I snug the bolts up about another 1/2 turn. It works this way without a gasket too.
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05-14-2021, 05:17 PM | #6 |
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Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: L6 250 12bolt valve cover
Silicone both sides will make it hard to remove the valve cover when that next comes due
Usually place silicone on 1 side to hold the gasket in place when installed Use a nice thin layer of silicone as well excess will get pushed out and can find its way to plug up things like oil pickup screens |
05-29-2021, 05:52 AM | #7 |
Senior Member
Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,025
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Re: L6 250 12bolt valve cover
Did you email Tom Lowe, the guy who owns 12Bolt?
He may have some suggestion. Some of those valve covers are extra tall to have room for roller rockers.
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