<VV> Engine Knock only at low RPMS

[corvairs]

When you say you don't have a balancer - do you have a rivited pulley? 
If so then check the rivits - Lon

www.corvairunderground.com

Brian Goldin wrote:

>I was wondering this myself but I've always thought that broken cranks are
>unlikely.  Once you get above the low RPM knock she revs up nicely and has
>plenty of power.  Luckily the knock started when I was close to home so I
>didn't dive it much after it started.  
>
> 
>
>Another interesting note might be that it threw the fan belt at pretty much
>the same time that the knock started.  This rarely happens and there might
>be a correlation.  Another point to note is that I don't have a harmonic
>balancer.
>
> 
>
>Is there a way to test for a broken crank without splitting the case?
>
> 
>
>Brian
>
> 
>
>  _____  
>
>From: BobHelt@aol.com [mailto:BobHelt@aol.com] 
>Sent: Wednesday, May 05, 2004 9:11 AM
>To: bgoldin@esri.com; virtualvairs@corvair.org
>Cc: fastvair@yahoogroups.com
>Subject: Re: <VV> Engine Knock only at low RPMS
>
> 
>
>In a message dated 5/5/04 8:28:07 AM US Mountain Standard Time,
>bgoldin@esri.com writes:
>
>
>
>
>I'm wondering if it could be a cam or crank journal, the cam gear or
>something in that area.  I've already swapped out the torque converter,
>tranny and diff for another one that is known to work.
>
>Any help would be appreciated.
>
>Running out of ideas,
>Brian 
>
>
>
>Broken crank?
>Regards,
>Bob Helt
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