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Old 06-13-2013, 08:01 AM
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Retorque 6-71 blower intake manifold to aluminum head

On a 6-71 intake manifold being used on aluminum heads what is done about the intake manifold re torque or is there a way to do the initial torque without having to do a re torque? I've read about doing head and intake torque checks after 3 heat cycles especially with aluminum heads. 20+ years ago when I was making a living turning wrenches when I replaced a head gasket on an aluminum head I'd do the torque then give it around 20 minutes or so then check the torque (always moved some). I'd continue in this fashion until all the bolts retained the set torque values.

Is the ARP ultra torque assembly lube a good product for the head and intake bolts.

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Old 06-13-2013, 09:26 PM
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I like to retorque the heads on virtually any new motor. I have head studs and I retorqued them after the initial run in. After that I just leave them alone. I have found that with the studs the nuts don't move once they are torqued anyway.

Retorquing the intake manifold is impossible unless you remove the blower. It's a lot of work to do this no matter how simple you have made the installation. I retorque the blower itself and what ever bolts on the manifold I can get at.

I replace intake gaskets one a year just to make sure there is no leaks. I also check the ones I can get at frequently. I have had water leaks due to loose bolts but now I have thrown the pretty chrome stuff away and use conventional bolts or reduced head diameter if needed.
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Old 06-14-2013, 09:00 PM
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I re torqued my bolt till I had a pattern on what they needed especialy on a unknown/fresh build.do you use fiber gaskets?
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Old 06-15-2013, 06:46 AM
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Quote:
Originally Posted by metalstorm View Post
I re torqued my bolt till I had a pattern on what they needed especialy on a unknown/fresh build.do you use fiber gaskets?
Yes, fiber
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Old 06-15-2013, 08:14 AM
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I Think the fiber may give/crush so I do think you should check it to be safe and I put some sealer on mine[1 side] to help hold it in place as an added precaution.
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