Is there more of a gain if one was to buy the UR Accessory Pulleys and Crank Pulley as opposed to just buying the Crank Pulley alone? The reason I'm asking this is because when i drive fast, i turn all of my accessories off anyway....

Your answers are appreciated, thanks. -Jake

 

From what I've read, not really. It's really moreso to keep your power steering pump and alternator/AC running smoothly.

Wait, are you buying the stock sized UR pulley or an underdrive crank pulley?

 

From what I have heard the other pulleys are for looks. The UR ones might weigh a little less. The crank pulley is your hp adder, being 7 lbs lighter than stock. You are smart to turn everything off when pushing it, but the PS system is always "on" and the alternator too, but as we all know the less electrical load it has to produce the less power it takes to turn it.

 

i got the obx racing accessory pulley kit... installed the power steering one for looks... damn it was worth it..

as for power...not noticable.

but beware! pulling the old pulley off the power steering or overtightening the belt can easily damage the power steering bearings. so make sure it's worth it before attempting.

cause i did mine all to spec and after tightening the pump was screaming and then 2 days later went away...thank god.

so i just wanted to give you a heads up

 

There is a minor gain from the accessory pullies but it's about 1-2hp if you do the whole set, nothing really substantial for the cost. They are there primarily for looks but they do weigh less than stock.

 

Which one adds the 7 hp?

 

Thanks for the heads up

 

The crank pulley gives you the gains.

If you get the underdrive crank pulley the gains are way better

 

IIRC at WOT the a/c compressor automatically shuts off. The other two, the alternator and power steering, are always on.

The accessory pullies are mainly for looks. A few people Ive spoke to that have them say it wasn't worth the hassle of installing them. Be careful with the off-brand accessory (not crank) pullies too, they may not be balanced and that wont fair too well on the bearings.

 

Sure glad I got the option one well they were still being sold

 

I would do the whole pulley set why just get the one piece.
If your looking for performance out of the pulleys.
Why just get a light weight crank pulley ?
You might not feel a differance with the accesory pulleys by them self but the whole set would definitly will make it feel better.
Also if performance is what your after get the under drive one's as well.
I think you get 2hp for every 1 pound off the crank.
so 7lbs lighter would be 14 and say 1-2 for other pulleys.
And underdriven pulleys should be worth a couple too.
15-16 at the wheels with out underdriven one's.
get the whole set,they look very nice.
With just the option crank pulley you will never see it.
Also I think the whole ur pulley set is like comptech headers.
you buy the whole set because you want the nice stuff and not cheap stuff.

 

These are 2 separate pulleys, correct? You can't have both at the same time?

 

Is this the one i want?

http://store.excelerateperformance.c...y/g-55512.aspx

 

Where the hell are you getting these numbers?

 

I'm curious as well. The accessory pulleys aren't worth the extra money in my opinion

 

You forgot to answer my question on post #12

 

don't remember where I came up with the every one pound off the crank free's 2hp.
But it is some thing I did come accros awhile ago and it's burnt into my brain.
If that is the numbers you are talking about.
I can see if I can find something that says this.

 

The crank pulley isn't really a gain. It just takes away the drag coefficient. It frees up lost horsepower from the heavy steel clad oem pulley which shouldn't have been there to begin with.

Makes no sense why carmakers make such a heavy ass pulley. They should all be alluminum.

 

They are the same yet different. The Stock Size crank pulley (ss) is identical in measurement to the OEM pulley that came with your car, it just weighs a lot less. The Underdrive pulley is a smaller replacement for the stock size pulley that weighs even less but also "underdrives" the accessories (but never below factory requirements.

You free up wasted hp with both but free up more with the underdrive than the SS. If you are planning on supercharging or running a stereo with more than 600 watts of power, you should need the ss pulley. If you aren't boosting or running a huge stereo system, you can use the underdrive.

In conclusion, you have to pick one or the other. They are 2 different options for the same part.
If they built them with all the performance go fast parts we'd have nothing to do with our cars other than wash and wax them. It would get boring

 

Thank you for clearing that up

I will most likely go turbo in the future, but probably not for a year or so....

UR underdrive it is!

 

i'm gonna go out on the limb here and say the underdrive pulley adds (gives back) more than 7hp..

it is better than a CAI. the entire car feels better all around.



I did CAI, underdrive pulley, TB spacer, plenums, headers in that order.

and the pulley felt like more of a difference.. so if a CAI is 7-10.

I'd say the pulley is 10hp.

 

The crank pulley is a decent mod, skip on the accessory pulleys, those are for show. You'll definitely notice a difference in your engine response. Never had any issues with accessories when I ran mine.

Read up about breaking the crank bolt, it can be a major pain.