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Old 01-19-2014, 07:39 AM   #1
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Valve cover gasket, RTV?

About to reassemble for a valve cover gasket replacement and wondering if using high temp RTV is recommended or a bad idea. Was thinking a thin bead on the head and then neatly press the new fel-pro gasket into place. Let that set a minute and then put a thin bead on the valve cover and reassemble. Just didn't want the gasket to shift around as I get that valve cover back on. It's a tighter fit than it looks.

Thanks fellas!

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Old 01-19-2014, 08:20 AM   #2
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It's been awhile since I did a valve cover (may have to soon), but I remember that I did it by putting the gasket first on the cover (with a little gasket cement to hold it), and then used some thread tied through the bolt holes to keep it from moving while I placed it on the head.

But, to your question, see:
http://www.jeepforum.com/forum/f9/ru...t-rtv-1308502/
and http://www.jeepsunlimited.com/forums...e-Cover-Gasket for some comments on using RTV

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Old 01-19-2014, 09:14 AM   #3
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Use a gasket sealer, not RTV. Under heat and oil RTV can get quite slippery and then causes more problems than it solves. If you plan to use the RTV at the corners of the head to hold the gasket in place while you torque it down, then you're okay, but I would not use it over the entire surface. That black, sticky gasket sealer by Permatex is what you need and then be sure not to over-tighten the cover bolts as that is what causes premature gasket failure more than anything else.
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Old 01-19-2014, 12:24 PM   #4
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I just installed one on my son's tj last weekend.He has the 4.0.The gasket I had was all rubber with some type of reinforcing through the center.I did not use any sealant.Just laid it on the head and made sure it was in place all the way around and installed my cover and torqued to specs.No leaks yet.Make sure to clean both surfaces good.Your gasket may not be like mine though.Good luck.
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Old 01-19-2014, 01:26 PM   #5
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Thanks guys. I noticed when I removed how loose the bolts were. I figured they were a little too loose and upon inspection of the old gasket attributed the rear bolts being too loose to why it had that light leak. I did not use a torque wrench but I snugged the down (best way I can put it) not tight at all but not as loose as they were previous.

What is the torque spec for a 97 4.0?
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Old 01-19-2014, 04:18 PM   #6
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Used 3 sheets 320 grit sandpaper, duplicolor prep spray, scuff ball on a drill, and more prep spray to prep the valve cover. Then 5 coats of duplicolor red high heat engine enamel. Baked it on with a heat gun. Then 2 thick coats of VHT ceramic header clear coat. Baked that on with a heat gun also. Reused the old hardware and kinda regret it. Would be nice to have all new bolts on it. The fel-pro gasket worked great. Drove it for a short run and no leaks so far.
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Old 01-19-2014, 04:18 PM   #7
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85 inch pounds or 7 foot pounds.
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Old 01-19-2014, 04:36 PM   #8
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Thank you Wrangler one. Good excuse to get a new torque wrench. 7 lbs is pretty light though. My old one only started from 20 if I remember correctly
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Old 01-19-2014, 06:00 PM   #9
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Looks really nice.I got my torque wrench from harbor freights.On sale they are cheap and seem to do a good job.

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