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Dreaded Valve Cover Oil Leak, Looking For Advice

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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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain
Dreaded Valve Cover Oil Leak, Looking For Advice

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06-07-2020, 03:51 PM	#5 (permalink)
SonicVQ Base Member Join Date: Jan 2016 Location: Ontario Posts: 230 Drives: G37 Sport Rep Power: 6721	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 Spartan 1771, JARblue and Rusty like this.

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