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Binx · 11-13-2011, 08:44 PM

I'm measuring my rod big ends to determine if I need them re-sized. Since I don't have the proper rod vise, I tightened them wrench tight in hand and found all but one measure minimum spec (2.2905") lengthwise and maximum spec (2.2910") crosswise. All the big ends have crisp hone marks all the way around. I thought the wear would show lengthwise but this seems to be the opposite. Though tagged as a rebuild in 1972, the motor was obviously taken off the road shortly after since even the bores are in spec for the oversize. So was this maybe a machine shop method to tighten them up lengthwise in anticipation of future stretch or will fully torqued caps reveal different measurements?

Thanks for your help

Lonnie

11-13-2011, 08:44 PM	#1
Binx Senior Member Join Date: Oct 2011 Location: Gloucester VA Posts: 1,042	8BA Rod Measurements I'm measuring my rod big ends to determine if I need them re-sized. Since I don't have the proper rod vise, I tightened them wrench tight in hand and found all but one measure minimum spec (2.2905") lengthwise and maximum spec (2.2910") crosswise. All the big ends have crisp hone marks all the way around. I thought the wear would show lengthwise but this seems to be the opposite. Though tagged as a rebuild in 1972, the motor was obviously taken off the road shortly after since even the bores are in spec for the oversize. So was this maybe a machine shop method to tighten them up lengthwise in anticipation of future stretch or will fully torqued caps reveal different measurements? Thanks for your help Lonnie