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@server.detomasolist.com] On Behalf Of Joseph F. Byrd, Jr. Sent: Friday, October 07, 2016 21:21 PM To: 'Mike Drew'; detomaso@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@server.detomasolist.com] On Behalf Of Mike Drew via DeTomaso Sent: Friday, October 07, 2016 20:52 PM To: Tomas Gunnarsson Cc: <detomaso@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 _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.
