[NoVa-Corvairs] Fwd: <VV> CO and a oil leak
Bryan Blackwell
bryan at skiblack.com
Sun Jul 13 14:33:43 EDT 2008
Given that we are about to do this very task, I thought I'd forward
along Ken Hand's note on sealing the top cover. I'm about to do the
same on the '66.
--Bryan
Begin forwarded message:
> Well, Here is what I do on the top cover, I use sealer and
> gaskets. I put
> the sealer on the gasket and/or the part which ever is easier. I
> also turn
> the washers over on the bolts and use the spring type lock washers.
> I then
> use the center out torque pattern and only tighten the bolts enough to
> compress the lock washers. I leave this set for as log as I can,
> Preferably
> 12-24 hrs. Then I go back and retorque all the bolts to spec, again
> using the
> center out pattern.
> With this method the steel is allowed to move some and not break
> the seal.
> And lock washers are cheaper than the "special" top cover bolts and
> won't
> come loose.
> If you are wondering what the center out pattern is I will try
> to explain.
> The "center out" Means to start as near the center or middle of the
> bolt
> pattern and start tightening bolts. leave the corner bolts loose.
> Then do the
> ends the same way and finally tighten the four corners. This method
> can be
> modified to fit anywhere on the engine, even the bellhousing bolts.
> Ken Hand
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