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Be very carful not to over tighten the valve cover bolts. They are a stepped collar design (see link below) and can snap, leaving the threaded portion in the head.
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06-07-2020, 03:51 PM
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#1 (permalink) |
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Base Member
Join Date: Jan 2016
Location: Ontario
Posts: 232
Drives: G37 Sport
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Be very carful not to over tighten the valve cover bolts.
They are a stepped collar design (see link below) and can snap, leaving the threaded portion in the head. Also, tightening them a little more will not increase the clamping force between the valve cover and cylinder head. If it is leaking, the rubber gasket has shrunk and needs to be replaced. https://conceptzperformance.com/niss...1a_p_25546.php Good luck with whatever you decide to do 
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06-07-2020, 05:03 PM
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#2 (permalink) | |
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A True Z Fanatic
Join Date: Dec 2011
Location: Fayettenam,Pennsyltucky
Age: 70
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Drives: 2011 Nismo GM 6M
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Quote:
 With these bolts. Once tight, that's it. If OP doesn't find any loose bolts. Then the gasket has to be replaced.
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