[DeTomaso] Alternator blues....

[Joseph F. Byrd, Jr.]

I would want that +2" bolt to be a "snug" fit to the alternator bracket.  A
10mm body bolt would have a 0.006" loose fit (so so good).  The bolt body
should be in both ears with a washer used to allow threads to be outside the
ear.  And the holes in the ears be the same as the hole in the alternator
(or tighter) so the 10mm is also a snug fit

The other would be either the bracket gap between ears be a snug fit or use
washers to achieve.

And finally, once the sliding bolt is snug for belt tension, is the through
bolt snugged so the ears are clamping the alternator



-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
Of Joseph F. Byrd, Jr.
Sent: Friday, October 07, 2016 21:21 PM
To: 'Mike Drew'; detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] Alternator blues....

Would you have a link to /or some photos of the mounting brackets to see if
there is an obvious rigidity/resonance issue?
(might be able to add a stiffener)
Joe

-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
Of Mike Drew via DeTomaso
Sent: Friday, October 07, 2016 20:52 PM
To: Tomas Gunnarsson
Cc: <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Alternator blues....

All,

Check this out. I have never bothered to look at the alternator while the
engine was running before, as it can only be seen from under the car. 

Today I put the car on the lift and had Lori start it up while I filmed it:

http://youtu.be/05CddX-lbew

Look at how violently it's shaking! You can feel it throughout the car--the
engine was smooth on the dyno but there is a vibration now. 

I haven't yet explored to see WHY it's shaking so much. I wonder if the
mounting bolt that came with the kit is the wrong diameter and the
alternator is loose even when it's tight?

I can easily imagine this kind of motion being responsible for the problems
we have been having, don't you?

Mike

Sent from my iPhone


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