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what belt to go with ??

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Old 07-18-2010, 09:02 AM
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the belt should be 113" from that code

how much travel does your tensioner have left before it is maxed all the way open?

you might be able to run a 112.5" belt
Old 07-18-2010, 11:41 AM
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Originally Posted by sharpshooter
the belt should be 113" from that code

how much travel does your tensioner have left before it is maxed all the way open?

you might be able to run a 112.5" belt
i have quit a bit of belt cause it was the same belt i was using when i had the 3.7 on and i remember having no problems getting the belt on with the 3.7 pulley . what size belts are you guys running with your 3.7 pulleys?
Old 07-18-2010, 12:11 PM
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I scribed my tensioner at max/min tension and split the distance in half. Came out to need a 113" belt. This has worked for me for 3 yrs. now and no belt issues. I'm running a MP112 but this may work for you.
Old 07-18-2010, 01:12 PM
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Originally Posted by idahoblkss
i have quit a bit of belt cause it was the same belt i was using when i had the 3.7 on and i remember having no problems getting the belt on with the 3.7 pulley . what size belts are you guys running with your 3.7 pulleys?
I'm running a 113" belt with a 3.6" pulley if that helps.
Old 07-19-2010, 08:09 PM
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just ordered a hd tensioner just to let you guys know it was only 160-170 shipped so i dont know where you got the $360 from, but ill keep you posted on the results...
Old 07-19-2010, 09:29 PM
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get ready to have some belts it does shorten the belt legnth a bit iirc an inch or two i think i went from a 114.5 to a 112.5 with the vortech . so you should loose close to the same
Old 07-19-2010, 09:38 PM
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I had nothing but trouble with gator back belts, would puke them every month. I have since switched to gates, with great success.. I had an old style bracket but switched the pulley( idlers) configuration to get max belt wrap.. I am running the stock tensionor also.. The Reichard Racing pulley is nice, but hear they tear the **** out of the belts, you do not get much life out of them(belt) Now I need to get off my lazy *** and slap my IW 8 rib pulleys on..

Old 07-19-2010, 09:44 PM
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I tore a gatorback belt up too. I switched to a Gates and have been good since.
Old 07-19-2010, 09:46 PM
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113" seems long for your app. I run a 112.5 and running a grandpa 4.38" pulley. New belts will stretch quit a bit with the tensioner fully compressed I had to pry it on with a screw driver. Removed it to replace bearings in idlers a week later and same belt went on by hand.
Old 07-19-2010, 09:56 PM
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Originally Posted by phasemaster1
113" seems long for your app. I run a 112.5 and running a grandpa 4.38" pulley. New belts will stretch quit a bit with the tensioner fully compressed I had to pry it on with a screw driver. Removed it to replace bearings in idlers a week later and same belt went on by hand.
Hmm...interesting. I ran a 114" belt with my 4" pulley. When I switched to a 3.6" pulley, I switched to a 113" belt and it's pretty tight. Do you have the new style bracket or the old style?


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