What belt is everyone running now. I know the Gatorback is no longer available
Which Idler pulley kit?
- Thread starter BossMane
- Start date
Gates RPM belts. Less prone to slip and less stretching. The only caveat is DO NOT run too short of a belt with the tensioner maxed out, it will snap. Tensioner should be under 50%.
RPM® Micro-V® Belts | Gates Corporation
Using some of the most advanced materials and manufacturing processes available, Gates Micro-V® Belts are engineered to outperform the competition. We’ve worked with most of the top automobile manufacturers in the world to produce our Micro-V® belts with OE quality to fit virtually any vehicle...
What is the proper size belt, when running this configuration:
2.8 upper pulley
Stock Lower
3 - 100mm idlers
1 - 90mm idler
The BilletFlow website says to use Gates belt K080751, which is 75.1 inches, but it was really tough to get on. Do I need a longer belt?
2.8 upper pulley
Stock Lower
3 - 100mm idlers
1 - 90mm idler
The BilletFlow website says to use Gates belt K080751, which is 75.1 inches, but it was really tough to get on. Do I need a longer belt?
Your alternator pulley size will also need to be accounted for when determining belt length
I'm running the PA Performance 130A alternator with the 3.2 pulley
I was running a Gates belt K080745, which is 74.5 inches, before I installed the 4 idler pulleys I mentioned in post #23
I was running a Gates belt K080745, which is 74.5 inches, before I installed the 4 idler pulleys I mentioned in post #23
Looks like you need a 76in belt according to the chart on LMR.
73.5 for 2.8 upper/ stock lower
+1in for 3.2 alt
+.5in for each of the 3 100mm idlers
73.5 for 2.8 upper/ stock lower
+1in for 3.2 alt
+.5in for each of the 3 100mm idlers
Looking at my original belt size chart, the 76" looks to be what you need. I'm showing either a K080760 or K080765.
Thanks for the help! I will pick up a 76" belt today
I just picked up a set of double bearing Metco's......they seem to be offset quite a bit forward, toward the front of the car, compared to my old billetflows. I know they're wider bc of the extra bearing...that's not what i'm talking about.
You guys running double Metco's, did you have to shim anything out? I've also read about people shaving down the rear of the Metco's mounting surface to have them mount a little further back for better belt alignment.
You guys running double Metco's, did you have to shim anything out? I've also read about people shaving down the rear of the Metco's mounting surface to have them mount a little further back for better belt alignment.
I believe they are wider and offset so they can be used with a 10 rib setup. I don't think there is any need to adjust the belt alignment.
I agree they definitely seem to sit "forward" so that the back of the belt is closer towards the edge, but they are also made to work with 10 rib setups, so it just appears to have an incredible amount towards the front of the car which isn't being used. If you were to compare it to any other standard width pulley, which would have the same "minimal" coverage front and rear, I think you'll find the coverage towards the back of the belt acceptable.
Thanks for the help! The new belt fits perfect!
That makes sense. I used to have a set of the Metco single bearing versions and they also sat really far forward. Like 10-12mm more than my billetflows.
Users who are viewing this thread
