Mitsubishi Lancer Register Forum - View Single Post - EVO 6 / 4G63 - re-torque of OEM head bolts possible?
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Old 27-03-2019, 17:57   #6
Clivew
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Is this a thing? No, we’re all making it up to give you the run around. Please don’t insult us.

Back on topic?

We are discussing the topic of the oil leak and the most likely cause.

You said comp tests are fine, so why do you want to ‘tear the engine down’ ?

If I were you, I’d remove the exhaust studs, degrease the threads in the head, then re-fit, coating the threads in red RTV or Loctite 5990 or similar.

I wouldn’t touch the head bolts until you know the head gasket is the cause, and even then, if it is, you’ll want to fit a new gasket, so a re-torque of the head bolts is mute.

A final note anyway - the standard head bolts cannot be further tightened once fitted, you need to remove, check they have not permanently stretched (nominal length 99.4mm), re-oil the threads, then re-torque and tighten another 180deg.
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Last edited by Clivew; 27-03-2019 at 17:58..
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