dougal813

Bunch of pulley questions:

1) Can you really feal the upgraded HP with upgraded pulleys?

2) Which brand? AEM, Unorthodox?

3) Do it make sense to buy the underdrive pulleys or just the lightweight ones? I have heard the power gains are not really from the underdrive - mostly just from the decreased weight.

Thanks.

MikePA

1.) Yes, do a search.
2.) Unorthodox
3.) About 80% is from the weight reduction.

bacardi151

UNORTHODOX by far.

z3Ro

AEM r just for looks

MikePA

BTW, the pulley that gets you hp is the crank pulley and AEM doesn't make one.

SONNYS99TL

Any of you with the UR pulley know if the belt needs to be replaced when the pulley is installed? Different size?

Thanks.

MikePA

Yes and yes. Download the instructions from the UR site and all your questions will be answered.

SONNYS99TL

thx Mike....I was just looking at the website but I couldn't find the instructions, you wouldn't happent to have the link would you?

MikePA

Click on Information from the main page, click on View Details to the left of 'Download Instructions', select the part number you're interested in.

AcuraTl203

UR pulley = $185 , no-name pulley on ebay $50 shipped thats what i went with and felt some gains and had $100 left in my wallet to pay for the install

SONNYS99TL

i just ordered the UR Crank Pulley and was told by the seller UR Group buy by Excelerate that no new belt is needed for this one Pulley.

NYZGREATST

UR CRANK IS THE SHIT. dollar for dollar the best mod i did

NYZGREATST

ummmmm, i dont know if he gives you the belts now but you def need new belts.

THE TURBONATOR

so did u need a new belt for the crank pulley?

SONNYS99TL

I still haven't installed it. hopefully will do it this week. Again it's probably a good idea to use new belts but it's not mandatory.

NSXNEXT

iTrader: (2)

Belts are not included from UR and yes, you absolutely need new belts.

Gates model # K060441 for crank to alt to AC
Gates model # K040425 for crank to PS

SONNYS99TL

NSXNEXT-So you are saying I need both these belts for just the crank pulley?
I just want to be 100% certain, since I am hearing a couple different things.

If so, will Autozone or Napa autoparts carry this brand? model numbers?

Thanks for all your help.

NSXNEXT

iTrader: (2)

You just need this one if you're only doing the crank pulley.

Gates model # K040425

Autozone should carry them. Just ask if they carry Gates belts. They seem to be the best, no squeal and last a long time....and are recommended by UR

ou sig

there are two different belts running off the crank pulley, so yes you need two new ones - and you can get them at a local auto store. Part #'s? He gave them to you???

SONNYS99TL

got the pulley installed this past weekend....all I can say is "vrooom, vrooooooom"!

Pure Adrenaline

iTrader: (2)

No-name -- no reputation, no reliability, taking a big chance... and when it comes to the engine, I'm not taking chances. If the pulley isn't made properly, it could eventually shear the crankshaft right off. It's the same principle as any rotating mass like wheels, tires, brake rotors, etc. They have to be balanced, and with no-name pulleys, you just can't be sure. And with the crank pulley, you don't just get vibrations like tires... you could do some serious damage to the crankshaft, which will require taking apart the entire engine to replace/repair. So ask yourself if it's really worth it to have the mere 100 dollars in your pocket.

Unorthodox Racing has the reputation to back up their products. I have the 3-piece kit on my car, took about 2 hours to put 'em on. 290 bucks well spent, had fun for two hours, and I know they won't fail me unlike a no-name brand where I will be worried constantly.

Elementz

Exactly...don't screw with a cheap part on this mod. Go with UR and yeas you will definitely feel the increased power. My favorite mod.

seattle dale

i have to agree my ur crank pulley was a great mod. But for me it was 3rd so far as being my favorite. For me Headers was #1, Unichip #2, then the ur pulley. All great performance mods by the way. I put on the above mentioned gates belts when i did my ur crank pulley install. Worked like a champ & i had no squeels @ all.