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Re: [TR] 10Si alternator application

To: Randall <TR3driver@ca.rr.com>, Triumphs <triumphs@autox.team.net>
Subject: Re: [TR] 10Si alternator application
From: Frank Fisher <yellowtr3@yahoo.com>
Date: Mon, 1 Oct 2012 15:03:34 -0700 (PDT)
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Reply-to: Frank Fisher <yellowtr3@yahoo.com>
Sender: triumphs-bounces@autox.team.net
Randall
thought id share my experiences of fitting the GM alternator on
two-TR3's.
 
my first experience was with buddy Paul's car. he had bought a
"kit" off Ebay.
it simply bolted on to the standard triumph generator bracket
and adjusting bracket. the problem we later found with this approach was that
there was no support for the rear of the alternator. consequently when we
tensioned the belt we pulled the alternator out of plane. the belt then rubbed
against the side of the pulley and we suffered premature wear and loss of the
belt at the most inopportune time.
Paul's conversion came with a machined
front pulley for the wide belt.
building a bracket to support the rear of the
alternator is a little tricky but certainly not out of your realm. you will
see the mounting hole on the back is not in line with the front. your new rear
bracket must have a slotted adjustment hole.
 
when i put an alternator in my
TR3 i used the pulley off the standard generator. machined it to fit and built
a special nut.
but in doing so i pushed the pulley forward of the rest of the
pulleys by about 3/16". so i was forced to grind off some of the aluminum
mounting tab of the alternator.
again i build a slotted support for the back
of the alternator.
 
Frank
 

From: Randall <TR3driver@ca.rr.com>
To:
triumphs@autox.team.net 
Sent: Sunday, September 30, 2012 10:02 PM
Subject:
[TR] 10Si alternator application

Hi Folks,

I'm trying to help someone that
wants to do the venerable GM 10Si alternator
conversion on a TR4.  He would
like to know a specific GM application for
the donor alternator (to get the
right terminal orientation, etc).

Anyone know offhand?

-- Randall 

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