ckpitt55

iTrader: (4)

While I've got my shortblock apart I'm measuring my cylinder bores for wear. I've got some questions about some of the tolerances.

I printed out the stickied spec sheet, and have the taper spec for the "thrust side" of the bore - is the thrust side the direction of the bore perpendicular to the length of the block? (i.e. from the side, pointing towards the crank). Also, is there an out-of-roundness spec for the bores? I'm going to take my measurements again with a better indicator and with the heads/main caps torqued down, but right now in its relaxed state, it looks like my max o-o-R ranges from 0.001-0.002" cylinder to cylinder. Does anyone happen to know what is acceptable before a rebore and/or rehone is necessary?

KCS

iTrader: (20)

The cylinder head is going to change the bore dimensions. You may be able to torque the head on and drop the bore gauge in from the bottom.

ckpitt55

iTrader: (4)

that's what I was going to do. any idea on an acceptable roundness?