ls1 cylinder bore question
#1
ls1 cylinder bore question
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?
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?
Last edited by ckpitt55; 12-05-2012 at 12:33 PM.