piston ring question

[Knight_Rider]

hey guys just wanting to know what end gap you run. I have a new set of wiesco pro lites 64.75mm ive sat the ring in the bore and i measure 9 thou gap does this sound about right?.

 

also with the wiesco pistons when you sit them in the bore does it matter if the boost ports dont quite match up. The pistons i pulled out of it were factory yamaha ones .50 they look like the have slightly bigger boost ports they look wider where as the wiesco ones look taller.

any help would be appreciated

[Bansh-eman]

hey guys just wanting to know what end gap you run. I have a new set of wiesco pro lites 64.75mm ive sat the ring in the bore and i measure 9 thou gap does this sound about right?.

 

also with the wiesco pistons when you sit them in the bore does it matter if the boost ports dont quite match up. The pistons i pulled out of it were factory yamaha ones .50 they look like the have slightly bigger boost ports they look wider where as the wiesco ones look taller.

any help would be appreciated

 

on the little paper that the pistons come with it tells you how to determine ring gap... on a stock bore its .010-.012 so i just went with .011

 

it will show you how to do the math....

 

and as far as the ports go the pistons wont match perfectly... as long as they arent to the sides and they are centered then they where cut right..

[CMAC]

its .004 thou for ever inch of bore. just put in 64.75 prolights. the bore is a hair over two and a half inches. so i set them at .010.

[Knight_Rider]

thanks for the help guys when i worked out the equation it worked out to be 10thou