(All Years) Favorite Type of RTV/Gasket sealer - Subaru Forester Owners Forum
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post #1 of 11 (permalink) Old 02-19-2011, 01:12 PM Thread Starter
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Favorite Type of RTV/Gasket sealer

I am about to start assembling my 3.3 and want to know what you guys use for gasket sealer for cam caps, oil pan and pump, water pump, etc. I figured that Permatex ultra gray would be good, but always looking for any good advice.

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post #2 of 11 (permalink) Old 02-19-2011, 01:20 PM
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Curil T. Aircooled.Net, Inc. - Online Autoparts Catalog

Watch out with silicon-based sealers, if you use too much they'll "snake" on you and end up inside your engine, not good.

Stan

Shocks > struts.
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post #3 of 11 (permalink) Old 02-19-2011, 01:23 PM Thread Starter
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Thanks for the link. Anyone else have a favorite?

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post #4 of 11 (permalink) Old 02-19-2011, 03:11 PM
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For RTV:
Permatex Ultra Grey

Permatex Ultra Copper

For general case sealing( diffs, T-cases, engines...) I like Threebond 1211 or yamabond 4. They don't really ever fully harden, so disassembly is easy as is clean up.

I also really like GMs 1052943 Anaerobic Sealer. Permatex 51813 and Loctite 518 are the after market equivalents. You apply it, bolt it together and it is basically done and ready to go. No x hour set time and xx hour full cure time.

His - 08 X Prem 5mt
Hers - 08 X 4EAT
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post #5 of 11 (permalink) Old 02-19-2011, 05:02 PM Thread Starter
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If you were re-assembling a motor (head job) and were in no rush to let things dry, which would you use?

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post #6 of 11 (permalink) Old 02-19-2011, 05:55 PM
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In the case of the DOHC and sealing up the cam caps I generally go with Ultra Grey,

Three bond 1105 or 3M Ultrapro Silicone 08672 are the factory substitutes for Fujibond. Ultra Grey is the most readily available thing closest to those.

I also do like the Elring(curil) sealers that Stan posted there whole line really preforms well, again just not as common in stores.

The key is really in using the right sealer for A the material(case in point Threebond 1211 does not play well with copper), B the temp range C the gap you are needing to fill.

His - 08 X Prem 5mt
Hers - 08 X 4EAT
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post #7 of 11 (permalink) Old 02-19-2011, 06:15 PM
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Either Permatex Ultra Gray, or I frequently use Loctite 515 all over the place.

98S, 2014 Impreza 5 dr Ltd (9 Subaru's since 1978, 7 were 5 sp) ILuvSubaru's
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post #8 of 11 (permalink) Old 02-20-2011, 11:53 AM
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I always use Permatex Aviation as a gasket sealer.
http://www.permatex.com/products/Aut..._Sealant_a.htm

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post #9 of 11 (permalink) Old 02-20-2011, 11:56 AM Thread Starter
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Alright, I went to the store and my best options were permatex ultra gray and permatex anaerobic gasket sealer. I would like to get the cams installed today, so if your were in my shoes, which would you use?

04 X a/t
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post #10 of 11 (permalink) Old 02-20-2011, 12:12 PM
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I don't know. I always thought the gray was a "gasket maker" when you didn't have a gasket between the surfaces. Like on some rear diff. covers.. they don't have a gasket.

If you have a gasket already I always use a "gasket sealer" like with water pump or thermostat that has a gasket.

I don't think you want to put anything on head gasket....
I don't know about cam install.

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post #11 of 11 (permalink) Old 02-20-2011, 12:15 PM
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Ultra Grey, The cam caps have no gasket. It is machined finish on machined finish.

His - 08 X Prem 5mt
Hers - 08 X 4EAT
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