Ultra S Unorthodox Racing Underdrive Crank Pulley

[dosle]

from what i heard from Ken at protegegarage.com they were made in limited numbers and one company bought out alot of the remaining pulleys.

 

[maitai92]

Ok guys, I am really sold.. Other than UDP and belt(?) Is there anything I else I need?
Very good info and please keep us posted. BTW, just wondering what kind whp do you get from UDP. Any dynos from anybody?

 

[p5sundevil]

well technically it doesnt make an whp, it just frees up HP that is being lost by the engine, basically you are removing rotational mass that was dragging the car before and causing power loss through the drivetrain. UDP's, water and alt pulleys, flywheels all free up more power through this method, they dont "make" power.

What I like about these parts is for NA buildups with bigger cams and a header and stuff your power band moves higher, these things help you keep that low end punch for day to day fun and twisties =)

 

[akhilleus]

good point. It definately helps it rev faster.

 

[Subghetto]

good point. It definately helps it rev faster.

(glare) Yeah it revs a lot quicker than before I have the pulley and I love it the only thing that pisses me off is that unorthodox racing did'nt sell a set of pulleys like they do for other applications, they only sell the UD pulley but something is better than nothing I guess.

 

[p5sundevil]

indigo has the other two pulleys for our cars in a set, i believe corksport carries them.

so does shane racing but they are usually a ripoff.

 

[Subghetto]

indigo has the other two pulleys for our cars in a set, i believe corksport carries them.

so does shane racing but they are usually a ripoff.

yeah but I'd be more at ease if I got the whole UR set you know not mix and matching.

 

[Minishotglass]

what type of decreased performance from the a/c and electrical power can I expect from the installation of ud crank pulley? I know that the reason for a ud crank pulley is to lessen the load on the crank by reducing its contact with the a/c, water pump, alternator etc. but would it come to a point where what is given up is unbearable?

 

[p5sundevil]

long as your not running a big system you should be fine, i dont think I will have a problem runninga new HU and an extra 10" sub but just to be safe i will be upgrading to an optima battery and maybe get a voltage gauge to keep an eye on things.

 

[birdy85]

hey guys, just wondering what size wrench you guys used to loosen the bolts on the pulleys, to loosen the belts. there are two bolts on the front altenator pulley. i can loosen the front one okay. but the bolt under that pulley, which is running perpendicular to the pulley does not have a size. i have tried every size of wrench on it. can you please tell me what size to use. i treied using an adjustable spanner but it is to hard. cheers

 

[Shades]

well, it lightens the load by underdriving the A/C and waterpump, but a lot of the difference comes from the weight difference. The stock pulley is a huge lump of black metal, whereas the UR is a light aluminum alloy. As for loss of power resulting in the non-go-fast system, I do have to turn AC onto 2 before I can really feel it, but so far no probs w/ stereo, turning it up or cranking it loud.

 

[Protege_Speed]

If I am not mistaken the front two bolts that you loosen (tensioner & bolt under power steering pulley) is 14mm and the rear two (tensioner and alternator) is 12mm.

hey guys, just wondering what size wrench you guys used to loosen the bolts on the pulleys, to loosen the belts. there are two bolts on the front altenator pulley. i can loosen the front one okay. but the bolt under that pulley, which is running perpendicular to the pulley does not have a size. i have tried every size of wrench on it. can you please tell me what size to use. i treied using an adjustable spanner but it is to hard. cheers

 

[dosle]

my pulley is sitting here hanging out, i'm just not sure about tightening the belts, thats all thats keeping me from doing the install. do i need to be a master mechanic to get the belts right?

thanks

 

[Shades]

I just did it to where it felt right (the same as they felt before) and when I asked a mechanic later about it, he said it was perfect.

 

[Shades]

<<bump>> about 15,000 Miles later, I just got the belts and battery checked. The belts are fine and the battery is cranking better than before I got the pulley (so the alternator isn't being neglected as some have suspected). No problems to report.

 

[MrFoggy]

Interesting. I may need to hop on this train.

FYI, Adrenaline Racing is selling it for $150 on clearence still.

 

[Lil Freek]

man. i've been looking at this... it's like $160 to have it shipped to canada - that's not bad at all!
now i just need to find $160

 

[DiS]

I got mine few months ago, and yea it definetly frees up few hp's from the power transfer. Good to have on NA car, but once I will go with BOOST it will be time to put the stock pulley back on.

 

[Captain KRM P5]

my pulley is sitting here hanging out, i'm just not sure about tightening the belts, thats all thats keeping me from doing the install. do i need to be a master mechanic to get the belts right?

thanks

i'm thinking we can do it matt.

name your date and time!

 

[Jliao]

Where do you get the belt? and how many UR Pulley do I need to order?