How NOT to install Hughes Airgap
#21
11-23-2011, 10:14 PM
I smeared a thin layer of RTV over the entire Reinz gasket, didn't use the end seals as it sat too high when I did a dry fit, just ran a bead accross front and back. Let it cure for 2 days. I have no leaks. Is the fuel from the intake ports going to soften my gasket or what? I used Permatex Ultra Grey
I made sure to torque the bolts in order in steps several times.
Thought the only caution was to make sure not to put too much as it will squeeze out and restrict air/fuel flow to the cylinder.
I made sure to torque the bolts in order in steps several times.
Thought the only caution was to make sure not to put too much as it will squeeze out and restrict air/fuel flow to the cylinder.
Last edited by beeker; 11-23-2011 at 10:18 PM.
#22
11-24-2011, 07:32 AM
Join Date: Mar 2010
Location: Marietta, GA
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I smeared a thin layer of RTV over the entire Reinz gasket, didn't use the end seals as it sat too high when I did a dry fit, just ran a bead accross front and back. Let it cure for 2 days. I have no leaks. Is the fuel from the intake ports going to soften my gasket or what? I used Permatex Ultra Grey
I made sure to torque the bolts in order in steps several times.
Thought the only caution was to make sure not to put too much as it will squeeze out and restrict air/fuel flow to the cylinder.
I made sure to torque the bolts in order in steps several times.
Thought the only caution was to make sure not to put too much as it will squeeze out and restrict air/fuel flow to the cylinder.
Good call not using the x gaskets since you RTV'ed the runners, OTW you'd been leaking like mine did.
#23
11-28-2011, 03:25 AM
Yes, it was cured before starting up. Since the air gap runners are much narrower than the kegger runners, I suspect the rtv created an uneven surface which, like HeyYou says, this and the low torque just compounded any surface imperfection.
I don't know what to think of the cross gaskets, I mean they were literally in pieces by 250 miles. I didn't use any rtv with these as drew recommends, other than the corners.
I don't know what to think of the cross gaskets, I mean they were literally in pieces by 250 miles. I didn't use any rtv with these as drew recommends, other than the corners.
#24
11-30-2011, 01:42 PM
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4085 - wish I'd known that before. No earthly idea how one would find that info you gave, but after physically checking the diff's with and without x-gaskets, it is true as you state.
If the x-gaskets are 100% RTV, then I suspect the fuel leaking from intake dissolved them. RTV is not designed to be in contact with gas, and I assume gas vapor applies as well.
Since the re-install, everything nice n tight, running pretty good. Still not convinced she's post-rebuild 100% optimum. I had Hughes put together a SCT tune, but now am second guessing that decision as Hemifever seems to be the top guru for tunes.
If the x-gaskets are 100% RTV, then I suspect the fuel leaking from intake dissolved them. RTV is not designed to be in contact with gas, and I assume gas vapor applies as well.
Since the re-install, everything nice n tight, running pretty good. Still not convinced she's post-rebuild 100% optimum. I had Hughes put together a SCT tune, but now am second guessing that decision as Hemifever seems to be the top guru for tunes.