What does this orange splotch mean on my cylinders?

ArVeeNiner · #1 02-21-2009, 11:53 AM

I just hung my engine the other night and I'm getting ready to do a quick rattle can overhaul on it. It has been previously rebuilt and each cylinder has orange paint marks on them. What do they mean? Should I maintain them after I paint the engine?

Thanks

KentuckyMike · #2 02-21-2009, 12:06 PM

Grey or Unpainted = Standard cylinder barrels
Orange Stripe = Chrome plated cylinder barrels
Blue Stripe = Nitrite hardened cylinder barrels
Green Stripe = Steel cylinder over sized .010
Yellow Stripe = Steel cylinder over sized .020

http://www.lycoming.textron.com/supp...aintenance.pdf

See page 9.

ArVeeNiner · #3 02-21-2009, 12:25 PM

My friend guessed chrome and it turns out he was right.

Thanks!

Oh, and by the way, that is a good document you sent the link to. Thanks!

CESSNADON · #4 02-21-2009, 08:22 PM

Cerminil cylinders are identified with a silver splotch...