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Old 06-21-2016, 01:32 PM   #1
atiprocharger's Avatar
Drives: Black 2014 Camaro 2SS 1LE RS
Join Date: Nov 2012
Location: Atlanta GA
Posts: 224
Mechanical or spring tensioner?

Hi all. Need some info from anyone that has gone this route. I have a slp supercharger, cam etc (see sig) and have belt slip. I am trying to decide if I should go with a JRE/ADM style or MTI racing tensioner. Any advice/experience is appreciated.
CAI, LTs, no cats, ported TB, catch can, Cam Motion CAM, SLP TVS 2300, LS9 injectors, Super tensioner, Tune by Mike at Vengeance racing: interchiller, 607 rwhp.
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Old 06-21-2016, 06:11 PM   #2
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I have a JRE but the Adm one has an additional pulley for more belt wrap on the crank pulley...
650 HP 725 TQ
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Old 06-22-2016, 10:51 AM   #3

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A mechanical tensioner will require quite a bit more static tension on the belt to account for belt stretch under load, which will be much worse for your alt/PS/WP bearings than the increased tension from an upgraded spring tensioner. If you also have a long belt, especially a 6 rib, that may still not be enough static tension.

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Old 06-24-2016, 03:26 AM   #4
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Good strong spring tensioner every time for the reasons above.

With mechanical, you need to overtighten the crap out of things just to account for the fact you have a mechanical tensioner that can never compensate once the belt starts to stretch further.
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Old 11-19-2016, 05:47 PM   #5
Drives: 1968 camaro
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who makes the best heavy duty spring tensioner??
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