[TR] TR2/3 alternator conversion & belt length.

Frank Fisher yellowtr3 at yahoo.com
Thu Jul 15 10:11:41 MDT 2010


Rod
i see no advantage to using that bracket.
the big problem is that the
rear mounting hole on the delco is not in line (in 
plane) with the front
mounting hole. custom bracket is needed to bring things 
back in line.
frank
________________________________
From: Rod <rgt2 at sbcglobal.net>
To: Frank
Fisher <yellowtr3 at yahoo.com>
Cc: Angelo Graham <agraham at execulink.com>;
triumphs at autox.team.net
Sent: Wed, July 14, 2010 5:38:12 PM
Subject: Re: [TR]
TR2/3 alternator conversion & belt length.

Frank Fisher wrote:
> Angelo
> i
did the same thing and machined my old pulley.
> before installing the
>
alternator i tucked the belt on, and then preceded to bold up the alternator
>
to the brackets.
> i would warn you that just using one bolt through the front
> bracket of the alternator will probably lead to problems. you really do need
> to fabricate a rear bracket. what happens is when you tension the belt you
>
pull/twist the alternator out of alignment.
> good luck
> frank
>
________________________________
> From: Angelo Graham <agraham at execulink.com>
> To: triumphs at autox.team.net
> Sent: Mon, July 12, 2010 6:46:35 PM
> Subject:
[TR]
> TR2/3 alternator conversion & belt length.
> 
> Hello Listers:
> Just
finishing up
> an alternator conversion - used a generic AC Delco 7127. I used
my old
> generator pulley with a bit of machining on the AC Delco. Tried to
fit a new
> belt and far too short. Pulled the alternator as close to the
block as
> possible and still many inches short.
> Not sure if this is a
"standard"
> problem, as the larger o/d of the alternator requires a longer
belt?
> I had a
> new Gates segmented belt (groves cut across the belt width).
Just wondering
> how common 3/4" belts are in various lengths? Anyone have a
similar issue
> using the stock pulley and an AC Delco? Any idea of the belt
length required?
> Thanks for any help with this.
> Angelo Graham
>
_______________________________________________
> 
> 
> 
>  
Has anyone tried
using a universal alternator bracket such as the A200 from
alternatorparts.com
I have seen the same bracket on a couple of other web
sites as well.  It bolts 
to the two existing generator mounting holes and
then the alternator mounts to 
the bracket.  It appears to be adjustable for
aligning the pulleys.

I did the same as most other seem to have done and
mounted the alternator at the 
front generator mount and used a long bolt and
spacer to capture the rear 
generator mount hole as well.  This also required
machining the alternator 
mounting ear to align the pulleys

My main concern
in looking at the picture of the A200 bracket is it may mount 
the alternator
higher, I just can't tell how much.

Rod Trunnell
TCF1034l


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