 should I or shouldn't I?, flexible sealant on pushrod tube seals? |
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| iankarr |
 Jan 12 2017, 09:26 PM
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The wrencher formerly known as Cuddy_K  Group: Members Posts: 2,519 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region 
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Hi Guys,
I have new pushrod tubes and viton o-rings ready to install as my quest to keep kitty litter out of my garage continues... The bores are super clean and look like they'd make a good seal...but when I serviced the tubes last year, they did leak a bit. That was using new viton, but the old tubes. The new tubes definitely seem to "seat" the rubber better. What are your thoughts about using yamabond (or some other flexible sealant)? Is there any downside? I assume it would only go around the seals on the case side, right? Thanks! |
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| mark04usa |
Jan 13 2017, 12:13 AM
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'70 1.7 Tangerine Group: Members Posts: 351 Joined: 14-September 09 From: Austin TX Member No.: 10,805 Region Association: Southwest Region
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IMHO, push rod tube seals should be installed with a coat of engine oil but no sealant. Sealant was not used there by the original builder of our engines. The push rod tubes move a bit in their bores as the engine goes through hot/cold cycles, so I don't see how a sealant would help much. My seals installed with no sealant stay dry for quit a few years before time to renew. The Viton seals may last even longer.
Lots of folks on the 'world do use sealant and have success with that method and will no doubt be here soon to tell you their way of push rod tube reseal...and that it is best. The topic has been debated before here. You'll need to decide for yourself...sealant or not (IMG:style_emoticons/default/beerchug.gif) |
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Posts in this topic
cuddyk should I or shouldn't I? Jan 12 2017, 09:26 PM
cuddyk Thanks mark.
My preference would be to go with no... Jan 13 2017, 12:45 AM johnhora As Mark said oil only ....no sealant...
many VW an... Jan 13 2017, 10:57 AM Keith914 Hmmm! I just finished carefully, no O ring dam... Jan 20 2017, 03:21 PM
HAM Inc I only used oil. I've fixed drips from newly i... Jan 20 2017, 07:32 PM Mark Henry NO to any sealant!
BTW Yamabond (threebond) al... Jan 20 2017, 05:05 PM Keith914 Thanks sgain for your advice -- will try spinning ... Jan 20 2017, 10:33 PM Keith914 Rotated the tubes 180 degrees (surprisingly easy -... Jan 22 2017, 12:49 PM |
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