datsun-roadsters
[Top] [All Lists]

Re: tight motor

To: "Andy Cost" <andycost@earthlink.net>, <datsun-roadsters@autox.team.net>
Subject: Re: tight motor
From: "Tom Phelan" <tomph@mchsi.com>
Date: Sat, 15 Feb 2003 16:06:01 -0500
> >>I am in the process of assembling a u20.  I had the crank ground and
> >installed
> >>new crank bearings.  The clearance is .025mm.  The manual I have gives a
> >>minimum clearance of .020mm.  The problem I've got is that it is
> impossible
> >to
> >>turn the crank over by hand with a big breaker bar.  Is .025mm too
tight?

Since we're talking clearance, doesn't bigger mean looser?

> >The
> >>crank was checked and straightened.  I tried using moly assembly lube
and
> >when
> >>it wouldn't turn over I tried Dexron.  Any suggestions?  Should I try to
> >break
> >>it in some by turning it with the caps not torqued down tight?
> >>
> >>Thanks,

How about the rope rear seal. If not prepared properly it will clamp the
crank real hard when you torque up that rear main cap. Just a thought. Try
it without the seal and see what happens.

Tom P

///  datsun-roadsters@autox.team.net mailing list
///  Archives at http://www.team.net/archive


<Prev in Thread] Current Thread [Next in Thread>