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Leaking lower intake fix

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  • #16
    No need for spacers, just get some intake studs. Or use carb studs to align and lower the intake.

    When doing the rtv apply more to the rear drivers side as the block has a bit more flat surface there.

    Let the rtv tack up before lowering it down. Able to touch without it getting on your finger.

    Do 3 torque sequence with 5-10 minute intervals.
    7-14-19

    Let it heat up a few times and hit it with the final torque again.

    That's what works for me.

    320rwhp. 7.67 @ 90mph 1.7 60'

    DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

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    • #17
      Originally posted by Mach1 View Post
      Everyone also like to ignore the crankcase pressure in general, the stock PCV system on a fox pulls vac on the crankcase at low throttle and also tries at WOT with the vac line in front of the throttle plate helping, assuming the restriction is upstream of the TB it will pull vac on the crankcase at WOT too which is great for ring seal, etc. When you pull all of that off and put some "breathers" on the crankcase all of those nice effects are gone.
      X2

      320rwhp. 7.67 @ 90mph 1.7 60'

      DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

      Comment


      • #18
        Originally posted by 91CoupeMike View Post
        No need for spacers, just get some intake studs. Or use carb studs to align and lower the intake.

        When doing the rtv apply more to the rear drivers side as the block has a bit more flat surface there.

        Let the rtv tack up before lowering it down. Able to touch without it getting on your finger.

        Do 3 torque sequence with 5-10 minute intervals.
        7-14-19

        Let it heat up a few times and hit it with the final torque again.

        That's what works for me.
        I see residue on my driver side valve cover, right along the lower channel where the bolts are. It flows about half way up that side. I do use alignment studs, but I think I rushed the torque sequence and I don't give it one more round of torquing after a warm up.

        Good info for my next attempt.

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