HELP! I-5 crankshaft end-play problem

[Jim Green]

--- Ameer Antar <antar at comcast.net> wrote:
> So, I got to laying down the crank in the block
> today and I was scratching my head about those
> thrust washers and the end-play on the crank. The
> new oversize main bearing set (.25mm) seem to be
> different than the stock ones. One pair of bearing
> shells has a lip on each side to fit over the
> recesses of the #4 main bearing cap. So I guess with
> this type of bearing set, you don't need to use the
> multi-piece thrust washers. Do I have that right?

Yes, you're right, that's how the new ones are.
> After test fitting the crank, everything seems fine
> and lined up, but I'm getting absolutely zero
> end-play on the crankshaft. I even tried tapping on
> the crank snout, but there's no movement. It looks
> like the spec is at least .003", but I can't get any
> feeler gauge in there. So I'm guessing that maybe
> the #4 bearing shells need to be machined to the
> right tolerance. How is this done? Should both
> shells be done at the same time? Does it matter
> which side of the shell I grind? 

If you put the shell into the cap, will it slide onto
the crank easily?  I've never heard about one needing
machined, are you sure you didn't get oversized bearings?

=====
Jim Green
'89 90tq
'89 80q
http://www.mswanson.com/~jgreen/car_home.html

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