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The mkiv Supra Owners Club

Cam/Rocker cover gasket


Chris and Alana

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The bolts are supposed to be slack. If you tighten them you run the risk of cracking the cam cover. They should be barely more than finger tight. Try a dab of gasket sealer in the corners.

 

:yeahthat: i hope they haven't been overtightened and cracked the casting on the corners.

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The bolts are supposed to be slack. If you tighten them you run the risk of cracking the cam cover. They should be barely more than finger tight. Try a dab of gasket sealer in the corners.

 

Oh damn :( When I noticed a slight leak from the rear of the cover I thought I would check the bolts. They were very slack to the point that you could undo them with your hands so I nipped them up slightly. I tightened them until there was resistance with a little socket set. I figured they should'nt be dogged down to allow for expansion but it just seemed that they were far too slack. Hope nothing has broke, I must go check now :(

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Oh damn :( When I noticed a slight leak from the rear of the cover I thought I would check the bolts. They were very slack to the point that you could undo them with your hands so I nipped them up slightly. I tightened them until there was resistance with a little socket set. I figured they should'nt be dogged down to allow for expansion but it just seemed that they were far too slack. Hope nothing has broke, I must go check now :(

 

You'll probably be ok. From the service manual they are supposed to be 5.4Nm, which is so low it's hard to find a torque wrench that goes low enough.

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Checked yesterday and the cam cover is fine :) have done about 250miles since nipping it up so I would imagine that would have been long enough for any expansion to crack anything if too tight. Thanks for the advice though guy :) just hope the leak has stopped as it looks clean now. If it hasnt I will drop you a PM SUPRA61 :) Thanks again.

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y do u if it wont leak?

 

Well pretty obviously it will leak if it's cracked! There's a fair amount of oil circulating through the cams and being whipped around in there. If your cam cover is cracked it's going to leak bigtime.

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