Yep... What belt size? (2.76, 2lb lower, BF snub/idlers)

[Reloaded]

Hey guys... I searched around here to try and find the answer to my question, but didn't seem to get anywhere. I have looked on BF's site, and my combo doesn't have a size listed, and I can't seem to make much sense of the chart on Metco's site... So. What size belt (round-about) should I be running with my setup?

I am currently running a Gates K080745 with a BF 2.76" upper, 4 piece BF idler set with snub idler, and a 2lb Metco lower will be going on next. Any insight into what I need to run would be much appreciated. I looked under the hood today and the tensioner is a bit off of the center mark, to the right, towards the raised side. I'm not sure if I should check that when the car is running or not. It has sat since last night when I checked it today.

Thank you for the help.

 

[gat0r]

what alternator pulley?
if stock, looks to be
K080780 - -78 5/8"
K080785 - -79"

better to check here...
Belt Selection Guide

 

[Reloaded]

Perfect, thank you! I never knew that Cobra Bob's site had the belt guide on there. Never even thought of it.

 

[Reloaded]

Ok so it looks like the guide is just a little off, at least in my case.

With the Billetflow 4 piece idler set (snub idler with new design bracket), 2lb Metco lower and a BF 2.76" upper, a K080780 fits PERFECTLY. The K080785 was just a bit too long when looking at the tensioner marks. Now with the 78.0 belt, the idler is RIGHT in the middle where it should be. Which is odd since I have the new style bracket... Anywho. Just a heads up.

 

[saleencobra]

not meaning to hijack ur thread just want to avoid a whole new thread if possible.

I have a whipple with 3.8 reichard pulley, stock lower, 4 BF idlers and a 3.2 alternator. Currently have a stock tensioner. i may get a different tensoner if that will allow me to run the same belt with a 3.5 whipple pulley as well cuz i have both.

I have no clue what belt would work with that combo.

 

[Reloaded]

Nah, no worries. Nothing much to hijack since I figured out my belt length.

 

[lowflyn]

I've got that exact setup...just don't have my hands on my belt size at the moment. If I recall correctly I think I ran into alot of belt slip with the 78" belt and ended up with a 77.5" belt.

 

[saleencobra]

thanks if anyone knows mine shoot me a pm

 

[LETHL 03]

Someone gave me this website a few days ago. hope it helps



Belt Selection Guide

 

[01cobravortech]

Subs

Sorry mods. Just need to keep this on 'file' for the correct belt for my 2lb lower.