In article , BlazerMaro writes
I was wondering if anyone here has had experience rebuilding Chevy
>60 degree V6 motors. I am just finishing up renewing a 1994 3.4L RWD
>out of a 'maro, and am finding that when I tighten the connecting
>rod nuts down to spec (37ftlbs) I am unable to rotate the engine by
>hand anymore. (Using a crankshaft socket and a 2' breaker bar)
>
>I am afraid to put any more force into it for fear of breaking the
>woodruff key off. If I back the nuts off a couple of ftlbs, I am
>able to rotate it again. I have checked all clearances with
>plastigage; everything is within spec. Journal/con rod oil clearance
>is at the tightest end of the spec at 0.001 (0.0011 to 0.0030 is
>spec) I am using FedMogul bearings all round, crankshaft was not
>turned as all journals were within tolerances, and only one con rod
>needed to be resized. (No warped rods either) Prior to tearing the
>motor down, it was easily turned by hand (as I would expect w/90k
>miles on it) I'm guessing this tightness will go away once the
>bearings have settled into shape, but...
>
>My question is this: Should I tighten everything down to spec, put
>it in and hope for the best?
NO
I am worried that the starter will not
>be able to crank it over.
It won't
I can't get a consistent answer from the
>ppl I know; some say that amount of tightness is normal, and in fact
>desirable, and a couple say it's bad (but no advice on what to do >about it.)
>
>(I have checked and triple checked that I have the correct bearings!) >
>
>Any help would be very gratefully received and appreciated.
>Thanks!
>
>
Have you got the right caps on the right rods and have you got them on the right way round?