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Home » Public Forums » GMCnet » [GMCnet] Reviving the Cad 500  () 1 Vote
Re: [GMCnet] Reviving the Cad 500 [message #164391 is a reply to message #164355] Tue, 27 March 2012 19:34 Go to previous messageGo to previous message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma:
Senior Member


Ken -
 
Just for the hell of it, when you got the chain cover off next time, take a straightedge to the mating face and convince yourself it's truly flat.  I can see where even a minor warp or twist would introduce some strange loads on everything it's bolted to.  Set it on a mill table if you know someone who has one large enough, with the dowels out.
 
--johnny
'76 23' transmode norris
'76 palm beach
 
 
 
From: Ken Henderson <hend4800@bellsouth.net>
To: gmclist@temp.gmcnet.org
Sent: Tuesday, March 27, 2012 3:21 PM
Subject: Re: [GMCnet] Reviving the Cad 500



I'm thoroughly convinced that the cause is external to the engine -- as
anyone would be when experiencing identical failures before and after
engine work.

The only block-transmission alignment check I did was to ensure that the
the dowel pins fit snugly.  Since I was convinced that the misaligned flex
plate and consequent transmission input bushing damage were the cause, I
was very skeptical about any other cause.  I'm no longer so skeptical.

I will definitely be checking transmission pressures and will publish the
results.

Thanks for you inputs.

Ken H.


> On Tue, Mar 27, 2012 at 8:37 AM, Les Burt <burtco99@yahoo.com> wrote:
>
>> Ken,
>> Out of curiosity, when you "dressed" the thrust bearing to obtain the
>> correct clearances, did you dress the front or rear surface of the shell?
>> Was this done with a stone or abrasive paper? Using such forms of abrasive
>> will leave some grit embedded in the surface of the bearing. The best way
>> to remove this fine grit is to buff up the surface on a clean piece of
>> paper resting on a flat surface.
>>
>> I'm also curious to know if you did any alignment checks of the block to
>> transmission?
>>
>> I'm assuming that you will be checking line pressures before pulling the
>> transmission. Please post your results, even of they appear to be within
>> reasonable limits.
>>
>>
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell
 
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