Quote Originally Posted by darren m View Post
Thank you guys -- some sound advice , going to be doing an HW80 , I think I will stick to the of school method as per above ..

its one used before , my train of thought was smoother the better but I see your point regarding grease retaining.... makes sense ..

is there Any real point in polishing the piston to a high sheen ???
The only real area of the 80 piston that should make any kind of contact is the very rear or the piston. A light polish and some lube burnished in will suffice (I just use emery) . Again a mirror finish not needed.
I'll be tackling an 80 myself in the next fortnight or so