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[GMCnet] Dual Alternator belts - 403 [message #254764] Tue, 08 July 2014 20:25 Go to next message
carguy is currently offline  carguy   United States
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Registered: June 2006
Location: Coshocton OH
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I am installing dual belts to drive both the alternator and the power steering pump. I plan to move the PS pump all the way down to maximize belt wrap. I'm sure others have done this and would like to know what size belts were used. My original 11AV1455 isn't long enough.

Belt size used?

Bill Brown
Coshocton OH
'77 Buckeye Cruiser
Change is certain, progress is not
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Bill Brown - '77 Buckeye Cruiser
Coshocton OH
carguybill@sbcglobal.net

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Re: [GMCnet] Dual Alternator belts - 403 [message #254928 is a reply to message #254764] Wed, 09 July 2014 23:32 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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Bill,

I used the same size belt(s) when I installed the dual pulley on Double Trouble's 455; Billy Massey did a good job in the latest
GMCMI Parts List regarding the belts to use.

Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428


-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Carguy
Sent: Tuesday, July 08, 2014 8:26 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Dual Alternator belts - 403

I am installing dual belts to drive both the alternator and the power steering pump. I plan to move the PS pump all the way down to
maximize belt wrap. I'm sure others have done this and would like to know what size belts were used. My original 11AV1455 isn't long
enough.

Belt size used?

Bill

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Dual Alternator belts - 403 [message #254931 is a reply to message #254928] Thu, 10 July 2014 01:35 Go to previous messageGo to next message
jim kanomata is currently offline  jim kanomata   United States
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When you push the PS pump all the way out to get maximum contact angle, the belt can get a little shorter.
Sometimes you need to compromise a little and not have the pump extend all the way.
We have found that as long as the tension of the belts are correct, there is less chance of belt slippage when turning.

Jim Kanomata Applied/GMC, Fremont,CA jimk@appliedairfilters.com http://www.appliedgmc.com 1-800-752-7502

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Re: [GMCnet] Dual Alternator belts - 403 [message #255152 is a reply to message #254764] Sat, 12 July 2014 10:16 Go to previous messageGo to next message
carguy is currently offline  carguy   United States
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Final report. What I failed to mention is that I also installed an alternator adjusting tool, the good one sold by Jim K. With this tool installed it is not possible to collapse the alternator all the way down. For this reason longer belts are needed. I ended up with belts that are 1" longer (58") Goodyear part #15585. and, yes, these are 7/16 (11mm) belts.

Bill Brown - '77 Buckeye Cruiser
Coshocton OH
carguybill@sbcglobal.net

[Updated on: Sat, 12 July 2014 10:18]

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Re: [GMCnet] Dual Alternator belts - 403 [message #255154 is a reply to message #255152] Sat, 12 July 2014 10:25 Go to previous message
WD0AFQ is currently offline  WD0AFQ   United States
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carguy wrote on Sat, 12 July 2014 10:16
Final report. What I failed to mention is that I also installed an alternator adjusting tool, the good one sold by Jim K. With this tool installed it is not possible to collapse the alternator all the way down. For this reason longer belts are needed. I ended up with belts that are 1" longer (58") Goodyear part #15585. and, yes, these are 7/16 (11mm) belts.

Bill, I also run those belt tighten ers from Jim K. But, still running a single belt on mine.
Dan

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