belt tensioner ?

[IZZy]

When I originally pullied my car I went with just the 100mm snub idler and the 2.76 pulley, I tried to get the full set of idlers but they were out of stock, Victor installed it for me and we used the stock belt with no issues and no belt slip... we were actually surprised that it fit.
Now fast forward to now, I finally got the rest of the idler pullies(two 100mm and a 92mm) My tensioner used to sit close to the middle between the two tabs but closer to the left... looking at the car from the front, I used the stock belt now with the rest of the idlers and it now sits in the middle but closer to the right side... does that mean its tighter or looser?
Here's a pic to illustrate it better:

wich tab do guys usually break to get the belt on tighter? the one on the left or the right?
Just trying to figure out if maybe now the belt is not as tight as it was before since I was getting some mediocre timeslips today at Byron, dont know if it was the weather or maybe I wasnt making full boost due to the belt not being as tight.

Click to read more...

 

[Flatliner]

The tensioner pushing up is tighter... I learned that from my RR. That being said, I never knew you could break a tab to make it tighter, but I would suggest going to a slightly shorter belt, do you remember what the stock belt length is? I did find that shorter belt, know I need to remember what I did with it :lmao: I think it was a 74"

 

[Flatliner]

On another note, you should start datalogging your car when you go to the track, would help in seeing what's going on

 

[Flatliner]

Another note to the side note... NO WAY IT'S 4AM, yikes.

 

[IZZy]

The tensioner pushing up is tighter... I learned that from my RR. That being said, I never knew you could break a tab to make it tighter, but I would suggest going to a slightly shorter belt, do you remember what the stock belt length is? I did find that shorter belt, know I need to remember what I did with it :lmao: I think it was a 74"

Ok so the tensioner is down lower than it was before so that means its not as tight, Carl mentioned something about being able to break the tab to make the tensioner travel a bit more, unless I break that tab on the right I wont be able to go take enough tension off to get a shorter belt...
But it makes no sense how I put bigger idlers on than stock and need a smaller belt
I think stock is 74.5..
you lost that belt again?:lmao:

 

[IZZy]

On another note, you should start datalogging your car when you go to the track, would help in seeing what's going on

I know, but I dont have a laptop.
Its 4am? Damn!

 

[Flatliner]

I didn't lose it... I put it somewhere so I wouldn't forget it... and well, I forgot again

I would imagine the tab on the right stops the travel as you said when you go to take belt off it's pushing the tensioner down, so I guess that makes sense to get a shorter belt on.

 

[IZZy]

I didn't lose it... I put it somewhere so I wouldn't forget it... and well, I forgot again

I would imagine the tab on the right stops the travel as you said when you go to take belt off it's pushing the tensioner down, so I guess that makes sense to get a shorter belt on.

let me know if you find that 74" inch belt, thats what Ill have to try on.
ps. im going to bed... you should too!

 

[Dana]

Breaking that tab off will allow you to slip on a smaller belt. That may help with belt slip if you are having an issue with that.
Also, removing one of the idlers when you are installing the new, smaller belt and then after the belt is installed, reinstalling the idler, we'll help in getting the belt over all the pulleys.

 

[blck10th]

my tensoineer looks just like that. I know it slips about .5 psi is what the dyno was saying.

 

[IZZy]

my tensoineer looks just like that. I know it slips about .5 psi is what the dyno was saying.

how much boost did you make on the dyno?

 

[blck10th]

13.7 something and it dropped off to about 13.2 @ eurotech

 

[IZZy]

13.7 something and it dropped off to about 13.3

ok, mine made only 13.5lbs, this shit is not cool I need my boost back!
I need one of those adjustable tensioners but they are three hundred and some bucks!

 

[blck10th]

Carl swears by his stock one. I have one but have not installed it yet. I saw one on Ebay for 150. check for it.

just looked its sold

 

[Flatliner]

ok, mine made only 13.5lbs, this shit is not cool I need my boost back!
I need one of those adjustable tensioners but they are three hundred and some bucks!

vnm has one on here for sale a hell of a lot cheaper.

 

[blck10th]

vnm has one on here for sale a hell of a lot cheaper.

that's where I saw it.

 

[IZZy]

that's where I saw it.

so did his sell on ebay or does he still have it?

 

[blck10th]

no his was not on ebay it is still on the boards. I think,

It was another one I saw on ebay. I am calling him tomarrow about something else I want to buy I will ask him for ya

 

[IZZy]

I sent him a pm but mention it to him anyway... thanks

 

[blck10th]

no problem man

 

[Wiked03]

So far I have had good luck with my stock tensioner... I figure I could buy 5 or 6 of the stockers before paying for a RR one. However, I do wish I had the adjustablitly sometimes... When I change pullies, I have to change belts as well.