ragtop69gs Posted July 16, 2020 Share #1 Posted July 16, 2020 I'm installing a new rear valve cover gasket, have the old gasket out and the sealing surfaces cleaned up. Last time I did this I used RTV silicone to seal the halfmoon area on each end of the head and after several years it was leaking again. Idon't have any RTV on Hand, but I do have a tube of Yamabond 4 semi drying liquid gasket, will the yamabond 4 work with the new rubber gasket? Link to comment Share on other sites More sharing options...
grubsie Posted July 17, 2020 Share #2 Posted July 17, 2020 Yamabond will absolutely work. Far better than RTV. That's what I used on mine. Link to comment Share on other sites More sharing options...
luvmy40 Posted July 17, 2020 Share #3 Posted July 17, 2020 That Yamabond 5 does not look like the Yamabond that I have used in the past. The Yamabond that I have is basically black RTV. The Yamabond 5 looks like a grey putty. Not saying it won't work, just that it's not what I've seen before. Link to comment Share on other sites More sharing options...
saddlebum Posted July 17, 2020 Share #4 Posted July 17, 2020 (edited) Look for a product made by Permatex called THE RIGHT STUFF it is the best engine sealant I have ever used far better than silicone. Any parts place should carry it. I have used it many times even replaced entire gaskets with it. NAPA https://www.napaonline.com/en/p/PTW25228 AUTOZONE https://www.autozone.com/sealants-glues-adhesives-and-tape/sealant/permatex-the-right-stuff-black-one-minute-gasket-sealant-7-5oz/15766_0_0 ADVANCE AUTO PARTS https://shop.advanceautoparts.com/p/permatex-the-right-stuff-gasket-maker-5-oz-29208/16160024-P Edited July 17, 2020 by saddlebum Link to comment Share on other sites More sharing options...
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