4agze piston to wall clearance

[IH8TEC]

right, motor ran a bearing, so decided to change a few things including putting the 8.9:1 pistons in my block, block got honed knowing there would be more than normal clearance, it now has a .005" piston to wall clearance, oh, these are .5mm oversize too,

what is std piston to wall clearance?
and how much will it affect it when i put it together?

this motor is running 25psi and compression of 9.1:1

cheers
brendon

[JP]

this was posted on here the last time this question was asked, I saved it to a text file, not sure who originally posted it:

piston to bore clearance is 0.12-0.14mm and it is measured 8mm above the centerline of the gudgeon pins at right angles to them. all came from the toyota engine manual which was all in japenese!

[IH8TEC]

hmm that seems really really tight to me, anyone else have anything else?

[JP]

search revealed the previous thread:

http://www.toymods.net/forums/showth...highlight=4age

[IH8TEC]

oh i just clicked thats MM's lol, oops, so .005" is mint then, some reason the guys were talking about .0025"

ah well, thats peice of mind for me before i put it together lol.

cheers JP
brendon

[Drifty Midship]