Piston - Bore clearance

[dawarriorman]

Just wondering what the piston - cylinder bore clearance is supposed to be. Can't find my manual. I havne't finished pulling the jugs off yet, but from the looks of it with the head off, I've got probably right at or just under .010 in of clearance. Im sure its too much, but Im just curious how far off it is.

 

Oh, and another thought. I was looking down the boost port, and noticed that the reed stopper seems to block it partially. What happens if you run with out one? Or would it be better to just notch it some.

Edited October 26, 2005 by dawarriorman

[PassionRE]

.003"

[BURKE_DADDY]

.003"

429990[/snapback]

 

if .003 is perfect how far over or under .003 can you run the pistons at?

[dawarriorman]

Oh and Jim, since you already replied, what about the reed stopper? (I edited and added that in there after you started replying) Cut it, or remove it, or does it not really interfere with anything?

[PassionRE]

if .003 is perfect  how far over or under .003 can you run the pistons at?

430148[/snapback]

Dont go under at all and I wont run one with more than .0055". Pistons skirts really start taking a beating past that.

 

Oh and Jim, since you already replied, what about the reed stopper? (I edited and added that in there after you started replying)  Cut it, or remove it, or does it not really interfere with anything?

430188[/snapback]

Leave it, if you have even partial rear boost port opening youll probably never notice it on stockish cylinders. The stock transfers have more than enough area to cover whats needed for stockish Ex. ports,and will flow enough well past what rpm range most pipes will pull to...Jim

[dawarriorman]

Ah, thanks.

[RBD]

Yea, what PassionRE said.