anyone have recommendations on sealants. stuff ya like or dont like. ive always heard go easy on the sealant so you dont get a cloged up oil system. i kinda like loctite ultra black.
ol_scratch said:There is a rather recent issue of Classic Bike or Motorcycle Classics that delved into this matter rather deeply. Explored sealants to the extent, some I didn't even know existed. Two of them that seemed to consistently receive praise was Permatex RTV (the old stand-by), and YamaBond. There were some other excellent examples, but were harder to find.
If I can remember which month I'll let you know. If I can find it at home, I scan a copy of the article.
JasonMcElroy said:I've tried probably 20 or 30 sealers over the last ten years. I think I have finally settled on what works for me.
Loctite 518 - anaerobic (no potential for clogging oil passages) flange sealer that has major gap sealing capability. I use this the most. Primary covers, kicker covers, etc. If the sealing surfaces are nice, you don't even need to use a gasket. Easy enough to remove on disassembly
Loctite pipe sealer (don't know the number) - started using it instead of teflon tape. Is ready to take pressure immediately, requiring no curing time. Less likely to get in oil passages on disassembly than teflon tape.
Copper coat - a number of companies make copper-based gasket tack. It's usually an aerosol. If the application uses a gasket, and you don't want to eliminate the gasket or the assembly is frequently serviced, use this. Holds gasket in place, enhances sealing capability of paper gaskets, stays with the gasket, not the flange, on disassembly.
Threebond 1104 (or Yamabond) - this is the heavy artillery for applications that you just can't get to seal by any other means. An UNHOLY BITCH to remove later, particularly when used in conjunction with a gasket. Generally known to be the "standard" in case-half sealing.
Always make sure sealing surfaces are flat. If surfaces are marred and nicked, you may have to use more sealer, or one towards the "heavy" end. Clean the surfaces spotless with lacquer thinner or denatured alcohol first. This goes a long way towards no leaks.