The Stovebolt Site Forums The Shop Area General Truck Talk anyone out there ever use Glyptol

Have any of you ever used Glyptol for the inside of engines?

Just wondering what the general thoughts of its use is here on the bolt pages.

My brother has been building High end engines for 25 years and uses it in all high performance applications. Makes that lifter valley real slippery and smooth after taking all the burrs and casting flash out of it. Don't forget to epoxy some brass or stainless debris screens over your oil return to keep the bad stuff( nuts, bolts,ect.) out of the pan..

Builder,

I used it in the valley of a SBC. I didn't smooth the castings though. If the surface is cleaned well, the Glyptol will stick permanently. I think the idea of it is to facilitate the quick return of the oil to the pan...I'm a little dubious on that deal. Supposedly, grinding the little bumps and irregularities off of a cast iron engine component will slightly inhibit its heat transfer ability...I'm dubious on this on too!

Dubious-Stuart

We've used it on 600+ HP round track engines, with good results. It's designed to be used on the inside of oil-filled electrical transformers, so oil resistance is not a problem. It is necessary, however, to smooth out the casting roughness before it will stick properly. Be ready to spend a LOT of time with a die grinder on the inside of the valve valley, and inside the crankcase. The primary advantage comes from the smoothing, not the paint, IMHO, as it dislodges any residue of casting sand stuck into the rough surface of the metal. At least some of that sand gets washed off, and circulates itself through the lubrication system. on a 50+ year old engine, I doubt if there would be much left, but on a brand-new casting it probably has some benefit.
Jerry