Sellout
30th August 2008, 11:28
Hey all,
I am rebuilding (another) NQ50 and have found something that has intrigued me... While changing the cylinder head & piston (cos the old one is scratched and heavily gouged) I have found in my box of spares a piston with a concave head (the top of the piston goes "in" towards the bottom of the bike) whereas the piston that I have taken out of the engine is convex (so it goes "up" towards the spark plug)
What is better? Is there a real difference? Should I put a concave or a convex in?
Cheers!!
I am rebuilding (another) NQ50 and have found something that has intrigued me... While changing the cylinder head & piston (cos the old one is scratched and heavily gouged) I have found in my box of spares a piston with a concave head (the top of the piston goes "in" towards the bottom of the bike) whereas the piston that I have taken out of the engine is convex (so it goes "up" towards the spark plug)
What is better? Is there a real difference? Should I put a concave or a convex in?
Cheers!!