95PGTech
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Running around with a supercharged 1999+ Mustang with the stock serpentine belt tensioner? You haven't had any problems with it yet, but you've heard of tons of other people bending, and sometimes snapping, their stock tensioners, even factory supercharged Saleen and Roush vehicles. It starts as a squeak, typically first on stick shift cars, then progresses to a chirp, and boost loss, then shredded belts, tossed belts, and even an occasional tensioner arm that completely snaps off.
But you don't need to worry about it, it won't happen to you, right?
Your car is special.
Rather than wait for it to be a problem, be a responsible car modifier and do some preventative maintainance. Not all tensioner issues start with the belt squeak to give you a warning; some go straight from not being a problem to being a two piece modular tensioner. Is it worth a few bucks to possibly have it screw up some pullies or have a chunk of that smash the hood or something on the front cover?
Belt slip = boost loss = lost power. What people usually forget is that with less boost, you're also getting lower fuel pressure. Lower fuel pressure at high rpm causes bad, bad things. As good as your tune can be, if your mechanical isn't there to support it, the setup is no good. If your tuner is expecting 9psi up top and you're only getting 7 or 8, it's going to throw the entire tune off.
When Roush sent us the P51 blower for Bill Jaynes 428R car, we noticed "Wow, look at the size of this bad ass tensioner." The car made huge power on the dyno at previously rarely touched boost levels and the tensioner showed no signs of giving up, even without a brace. Immediately we were on the phone with Roush to see if we could get these separately.
How confident are we in these units? About 99 units left in stock confident.
If you're belt slip, this is your firing squad.
This black car literally left ten minutes ago, 337 to the tire - three back to back dyno pulls, over 80 degrees outside and a lot of humidity. The normal Stage 1 package on an otherwise stock 5spd car. Guess who? Roush tensioner.
But you don't need to worry about it, it won't happen to you, right?
Your car is special.Rather than wait for it to be a problem, be a responsible car modifier and do some preventative maintainance. Not all tensioner issues start with the belt squeak to give you a warning; some go straight from not being a problem to being a two piece modular tensioner. Is it worth a few bucks to possibly have it screw up some pullies or have a chunk of that smash the hood or something on the front cover?
Belt slip = boost loss = lost power. What people usually forget is that with less boost, you're also getting lower fuel pressure. Lower fuel pressure at high rpm causes bad, bad things. As good as your tune can be, if your mechanical isn't there to support it, the setup is no good. If your tuner is expecting 9psi up top and you're only getting 7 or 8, it's going to throw the entire tune off.
When Roush sent us the P51 blower for Bill Jaynes 428R car, we noticed "Wow, look at the size of this bad ass tensioner." The car made huge power on the dyno at previously rarely touched boost levels and the tensioner showed no signs of giving up, even without a brace. Immediately we were on the phone with Roush to see if we could get these separately.
How confident are we in these units? About 99 units left in stock confident.
If you're belt slip, this is your firing squad.
This black car literally left ten minutes ago, 337 to the tire - three back to back dyno pulls, over 80 degrees outside and a lot of humidity. The normal Stage 1 package on an otherwise stock 5spd car. Guess who? Roush tensioner.
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