• Welcome to RCTalk! 🚀

    Join the #1 RC community where hobbyists connect, share, and get expert advice on RC cars, trucks, boats, drones, and more!

    • Friendly & passionate RC enthusiasts
    • RC tips & troubleshooting
    • Buy, sell & trade RC gear
    • Share builds & upgrades

Moly-B treating engines

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.

frickenjoey

Official RCNT Cyber-Bully
Supporter
Active Military
Messages
5,852
Reaction score
16
Points
703
Location
Misawa-shi, Aomori, Japan
RC Driving Style
  1. Bashing
  2. Racing
Has any one ever tried coating the piston and sleeve with molybdenum disulfide? It has great lubrication properties and bonds to the metal to form a slicker surface. I have a old friend that used to build comp. 2 stroke motocross engines and would always treat the engine with the moly-B before he would run them for the first time.....bad idea for a nitro? I use it on my drive cups and CVDs....I have a sacrificial motor I think I am going to try it on. Another one of those just because things that guys do.....
 
Last edited by a moderator:
That is usually used as an assembly lube on rotating parts such as camshafts and rod/crank bearings on 1:1 engine. It could be worth a shot on an engine that is already broke in. Over time it will most likely get "washed" (for lack of a better term) away by the fuel going through the engine. If you try it let us know how it goes.
 
Well it has been done......results? Well for a little bit it seemed the engine rev'ed a bit quicker then normal.....ran the rest of the tank out and went to restart....that is when the problem started. Molly gets in to the OWB and lubes it real good....and that is bad. So I now have a OWB that permanently slips. I have tried cleaning it with WD-40...denatured alcohol.....nothing works. So...that is what it does.....basically....nothing. But I had to know. Figures...lol
 
You might also try ethyl-methyl ketone. It's another thinner sold in hardware stores.
 
You might also try ethyl-methyl ketone. It's another thinner sold in hardware stores.

Methyl Ethyl Ketone (MEK). Having been exposed to this stuff for years in aviation and just about every facility I have ever been to has banned it's use I can't believe it's still available for purchase in hardware stores. I know it is as I have seen it but the stuff is just down right dangerous and it's a carcinogen.
 
Methyl Ethyl Ketone (MEK). Having been exposed to this stuff for years in aviation and just about every facility I have ever been to has banned it's use I can't believe it's still available for purchase in hardware stores. I know it is as I have seen it but the stuff is just down right dangerous and it's a carcinogen.

When I got out of the navy in 2005 we still had MEK on the ship. That is so potent. I remember I took a sniff from a bucket one time to see if it was paint thinner or MEK well turns out it was MEK almost knocked me on my ass.
 
I worked at one facilty back around 1998/99 and they had discontinued it's use then. Suprising, usually the military leads the charge on that stuff when discontinuing use. Sucks though, all the "good stuff" is being banned or discontinued and use by permit! LOL
 
if you can find MEK i would use Acitone. leading ingredent in nail polish remover. i use that when non water based paint gets stuck in my airbrush/spray gun. works like a charm
 
Back
Top