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Re: Free play in crank?? ('70 MGB)

To: mgs@Autox.Team.Net, gt0003a@prism.gatech.edu
Subject: Re: Free play in crank?? ('70 MGB)
From: s4usea@fanniemae.com (Scott Allen)
Date: Thu, 7 Jan 1999 07:46:59 -0500
gt0003a@prism.gatech.edu asks:

> 
> Hi all, while driving down to school I noticed that the car developed a
> clicking noise (as if from something hitting during rotation) from the
> front of the car during medium acceleration below 2500 RPM.  Under
> higher RPMs, no noise.  I stop and check the engine compartment and
> notice nothing loose that would possibly make the noise.  I grab my fan
> and turn it.  I notice there is about 1/4 to 3/8" free play where I can
> turn the crank.  Before, this was not the case.
> 
> Before I begin diagnostics this weekend, does anyone have any idea why
> this would be like this.  Could my crank pulley be loose?  Doubt it with
> the crank pin.  And why this noise from the pulley or nearby?  Pulley
> rubber shot???

Spun bearing.

If you have a friend with a stethascope (sp?) you may be able to 
take a listen down by the sump and figure out which one it is.

Good luck,

Scott Allen

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