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| Re: [GMCnet] Alternator belt tensioner mod. [message #134895 is a reply to message #134888] |
Sun, 17 July 2011 04:58   |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Thanks Paul, this is a mod we will all do ( sooner or later, one way or
another.)
http://goo.gl/bQ2Db
we just need someone to make a current version, so we do not have to
scrounge the wrecking yards to find them ;>)
This appliance, with the proper alignment of the belt, will probably ,
eliminate the perceived, need for the dual pulley, and using two belts,
modification.
thanks
gene
> I have uploaded a few more pics into a new album on the photo site for
> those that were interested in the tensioner mod I did on the alternator
> bracket.
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: Alternator belt tensioner mod. [message #134953 is a reply to message #134888] |
Sun, 17 July 2011 19:36 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| spiffycar wrote on Sat, 16 July 2011 22:52 |
I have uploaded a few more pics into a new album on the photo site [ <http://www.gmcmhphotos.com/photos/showphoto.php?photo=39796> ] for those that were interested in the tensioner mod I did on the alternator bracket. It should be pretty straight forward ...
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For anyone who is looking through "the mall" for parts, I have see the same type set-up on 1994 Mazdas. That leads me to believe that they can be found on many different 1980 and 1990 cars and trucks. It also would seem that if the donor motor was a Olds v-8 (small block from the time frame) the whole bracket assembly could be used... at least on a 403.
The next time I am at the mall, and have time, I'll look for more types of donors.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: Alternator belt tensioner mod. [message #134954 is a reply to message #134888] |
Sun, 17 July 2011 19:46 |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
Karma: 0
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Senior Member |
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MY readings seem to indicate they these were used on most GM 5.0 liter (308ci) engines from the 80s - 90s, so they may be available. We don't have many in the Chicagoland area anymore, but if someone finds some, I'm sure folks would appreciate adding this easy modification to simplify belt tensioning.
George Rudawsky
Chicago, IL
75 Palm Beach
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Just make sure you drill the hole for the thrust base as close as possible to the bottom of the adjusting slot. If you drill it too low you will run into the lockdown bolt hitting the engine bracket and limiting the "pivoting" movement of the adjuster. You may also need to shim the thrust base out with a washer or two in order to make sure the adjuster bolt lines up in the divot of the base properly. Good luck and happy one handed belt adjusting! 
