bluegs03
15+ Year Contributor
- 492
- 3
- Apr 4, 2007
-
Dallas,
Texas
Hey guys ive been taught to do piston to wall clearances before but i wanna clarify something.
I have .020 wiseco pistons, and i am sticking the feeler gauge into the cylinder 90 degrees from the wrist pin.
My question is this: Do you take your measurement at the top of the piston or do you try and stick your feeler gauge down and reach the skirt? Basically if you can get a feeler gauge in between the top of the piston and the wall but only a few centimeters further is this the piston to wall clearance? Or is it which feeler gauge can fit all the way down the piston?
Here's another way of putting it in pictures!!!
Top of piston
_________
------------| P to W clearance by which gauge you can stick in here
------------|
------------|
------------| or Here?
Middle of piston
The reason i ask is because i can fit a .010 feeler gauge at the top of the piston but it only goes a few centimeters down before it cant go farther, If i use the middle of the piston i get a measurement of .004-.003ish Which is BARELY in spec but i wouldn't have to have the block honed out again.
Thank you all!!!
I have .020 wiseco pistons, and i am sticking the feeler gauge into the cylinder 90 degrees from the wrist pin.
My question is this: Do you take your measurement at the top of the piston or do you try and stick your feeler gauge down and reach the skirt? Basically if you can get a feeler gauge in between the top of the piston and the wall but only a few centimeters further is this the piston to wall clearance? Or is it which feeler gauge can fit all the way down the piston?
Here's another way of putting it in pictures!!!
Top of piston
_________
------------| P to W clearance by which gauge you can stick in here
------------|
------------|
------------| or Here?
Middle of piston
The reason i ask is because i can fit a .010 feeler gauge at the top of the piston but it only goes a few centimeters down before it cant go farther, If i use the middle of the piston i get a measurement of .004-.003ish Which is BARELY in spec but i wouldn't have to have the block honed out again.
Thank you all!!!