I know, I've been a member here long enough to know, but I really try to stay away from reading the pulley threads. It's too tempting! So, I'm just asking "for a friend". What is the smallest pulley you can run and be confident of no belt slip or minimal belt slip WITHOUT running an idler?
Smallest pulley W/O idler??
- Thread starter Torch Red 10th
- Start date
Most 2.90 ultra grips can be used with no idler. Some fellas use the 2.80's with no idlers and no belt slip.
SFPHQ 2.93 with Gator-OK no problem.
3.10 non grip
Wow, 2.75 RR, even with a Gates would be pushing it......That's spinning that sucker pretty fast. May get away with it....may not.
Yea i was told by 2 people it was fine and they both had the same setup, no slip.
The crazy thing is when i was buying this i started to buy an idler, the seller told me not to, it wasn't needed and i was wasting money, seems odd he tells me not to buy something when the $$$ was going in his pocket?!?!
The crazy thing is when i was buying this i started to buy an idler, the seller told me not to, it wasn't needed and i was wasting money, seems odd he tells me not to buy something when the $$$ was going in his pocket?!?!
2.75 without idler = nfg
Most people can run a 2.9 without an idler.
Most people CAN NOT run a 2.80 without idler.
I SERIOUSLY DOUBT you can run a 2.75 without idler.
Most people can run a 2.9 without an idler.
Most people CAN NOT run a 2.80 without idler.
I SERIOUSLY DOUBT you can run a 2.75 without idler.
I am one of the few that runs a 2.80" using a Gates belt with no noticeable beltslip.
I don't see the reason not to get idlers. Is it the money? Is it losing the stock pulley cover? WTF is it. I could not wait to toss that stamped sheetmetal pos.
It will give you piece of mind knowing that you are not chewing through a belt while romping around town.
I was present at a dyno pull on an 03 with a 3.4 with no chip. Car pulled 427 RWHP, don't remember TQ. Next pull Doug from Billetflow added an idler. The car made 434 RWHP. That was a SFPH hub setup and the Billetflow idler bracket. I figured that a pulley that big benefitted so my 2.76 would too. All pulleys slip, only way to reduce it is to increase wrap.
It will give you piece of mind knowing that you are not chewing through a belt while romping around town.
I was present at a dyno pull on an 03 with a 3.4 with no chip. Car pulled 427 RWHP, don't remember TQ. Next pull Doug from Billetflow added an idler. The car made 434 RWHP. That was a SFPH hub setup and the Billetflow idler bracket. I figured that a pulley that big benefitted so my 2.76 would too. All pulleys slip, only way to reduce it is to increase wrap.
I don't know....I guess I'm the only one that likes the stock...sleeper look.....I prefer the pulley guard on.
I plan on running the 2.93 L pulley with a gatorback.
I plan on running the 2.93 L pulley with a gatorback.
no idler here with a 2.80. I did a before and after on the dyno with a 2.93 upper and a 6lb lower and it added 1 hp. So I sold it. figured I could find other ways to gain 1hp for $150. I say save your money.
No...you're not the only one! I prefer it too....it matches the color of my car.
Ok this is getting weird.....
I bought my RR 2.75 pully from Tommy Lighting, i told him to go ahead and send me a idler and he asked why....he said he was running the 2.75 with no idler and no belt slip, he went on to tell me that a 2.75 and an idler cause it to eat the belt up but without it didn't.
Tommy seems to be a great guy and gave me a great deal on my setup but now i'm wondering should i have listened and went with the 2.75.
So should i call him and change to a 2.8/2.9 or should i just order an idler pully?
I bought my RR 2.75 pully from Tommy Lighting, i told him to go ahead and send me a idler and he asked why....he said he was running the 2.75 with no idler and no belt slip, he went on to tell me that a 2.75 and an idler cause it to eat the belt up but without it didn't.
Tommy seems to be a great guy and gave me a great deal on my setup but now i'm wondering should i have listened and went with the 2.75.
So should i call him and change to a 2.8/2.9 or should i just order an idler pully?
I assume everyone is talking about the aux idler right? Not just changing the tensioner pulley?
If you change just the tensioner pulley, do you have to remove the pulley guard? Stupid question I know, but I haven't looked close enough yet to see if it would cause a conflict. My guard is painted the same as the car and would like to keep it as long as possible. I am going to try the 2.80RR pulley with a gates belt and no idler.
however, if you can increase the tensioner pulley and keep the guard, why not just do that?
If you change just the tensioner pulley, do you have to remove the pulley guard? Stupid question I know, but I haven't looked close enough yet to see if it would cause a conflict. My guard is painted the same as the car and would like to keep it as long as possible. I am going to try the 2.80RR pulley with a gates belt and no idler.
however, if you can increase the tensioner pulley and keep the guard, why not just do that?
It's not a money issue. I like the way my car looks under the hood the way it is. I'd like to keep my pulley guard on.
Yep-Me Too...
Also the Belt Guard is there for a reason.
If a pulley should leave the shaft or a belt
should break at high RPM, as both HAVE
happened to others, I won't have to replace
any parts of my hood or possible other engine
damage by a flying pulley.
I have the one smaller than the 2.80. 2.76? Anyway- its a Metco Interchangable Upper Pulley (w/ grooves for more grip).
Running it with no idlers, and no belt slip.
Running it with no idlers, and no belt slip.
Torch,
That's a great looking pulley cover!!!
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