strange lubricant

[catbed]

in putting my valves back in, the suzuki manual calls for molybdenum disulfide lubricant. what is it, can i use motor oil, or where can i get it.

[Nessism]

Commonly known as "assembly lube". Available at better auto parts stores or hot rod shops. Not strictly necessary, particularly if the parts are used and the clearance is above nominal. I've used motor oil before with fine results, just make sure to slather on a goodly amount. And don't forget to replace the valve stem seals with new.

[Suzuki_Don]

This stuff (molybdenum disulfide) was originally specified for cam lobes and flat faced cam followers to protect against initial wear on startup of a rebuilt motor. Always used it in this situation on our rebuilt Cleveland engines. Should not be too hard to track down and purchase. Would not have considered using it on valve stems though.

[bonanzadave]

Available at NAPA

[cleonard]

Be careful with that stuff. Use the minimum that you can. Moly is deadly to clutches. I was amazed when I first saw that in a motorcycle service manual. My Honda's spec what is called moly paste for this purpose. It is 60% MoS2. You can get it at any Honda dealer. I also use it on all my bikes that have swingarm busings as those need all the help that they can get.

[PAULYBOY]

howzabout motor honey? i've used it reassembling several car heads, slathering it on lifters, pushrod ends, etc.

[bwringer]

Motor Honey and moly assembly lubes are deadly to clutches. Sure, there's probably some small amount that's safe to use, but why bother?

Just put some motor oil in a small plastic squeeze bottle and use that. It'll work just fine. Use something thick, like 15W-50 or 20W-50 so it'll stick a little better.

For places where you need a bit of grease, I generally use the brown grease -- the plain translucent stuff that doesn't have moly or other mofifiers in it.

[catbed]

can i just use 10w-40, because i dont have anything else and i dont want to buy a quart of 15w-50 to use 3 teaspoons.

[chef1366]

If you use the moly lube make sure you change your oil after 50 miles or so.
You should of bought new valve stem oil seals. Use the moly lube to slip the valves throught the new seals. The bump at the end of the valves can catch inside the seal and you'll smoke like crazy and need to tear it open again. Buy the moly lube and also use it on the cam lobes. It's cheap and gives the motor the few seconds of protection when you start it for the first time.

[fgh]

WD-40 is a penatrating libricant that would be a poor choice as it might leave residue. If I were doing valves I'd use the same motor oil that I normally use in the engine. LOL

[bwringer]

can i just use 10w-40, because i dont have anything else and i dont want to buy a quart of 15w-50 to use 3 teaspoons.

Yes, 10W-40 will be fine.

You're thinking too much, man. Relax! SMILE! :-D

[DaveDanger]

Agreed. Use the regular engine oil that you normally use. The Moly Greases are designed specifically for high load applications, and once that engine has broken in and run awhile (about a week from the showroom) the Moly grease is overkill for anything inside the engine. Now those swingarm bushings and such are a great place for it