- Location
- Dallas, TX
- Car
- 2007 FX35 RWD
What if you frequently get into the high RPM's, would it then not matter that you are underdriven?
Which size pulley
- Thread starter wperdigon
- Start date
I have UR underdrive pulley, the only problem facing me untill now is the noise that comes from the pulley when stopping :err:. I will wait till the summer and then maybe there will be another issue (A/C) 
. otherwise, it's a great mod. nice gains specially at low RPMs.
. otherwise, it's a great mod. nice gains specially at low RPMs.
http://www.ultrarev.com/product.php?productid=78115
Found these online - Customer service says this set will fit the FX, but my confidence level isn't up there with the three word response I got, "it will fit". Anybody have any experience with this brand? Anybody ever swapped out pulleys on an FX?
Found these online - Customer service says this set will fit the FX, but my confidence level isn't up there with the three word response I got, "it will fit". Anybody have any experience with this brand? Anybody ever swapped out pulleys on an FX?
- Location
- Los Angeles, CA
- Car
- 05 FX35 RWD
They were problems with CNR pulleys. Dont do it unless you know tthe brand. There IS a difference
- Location
- Vancouver, Canada
Just got a question regarding the pulley. I heard the stock pulley is designed to let the belt "slip" in case of emergency. With the pulley replacing with aftermarket one, the belt will not "slip" and in case of emergency such as car slipping on icy road, the crank shaft will suffer from high stress and be damaged, since the wheels are not grabbing the road.
Is that true?
Is that true?
P
Psiclne
Guest
I have a WRP stock sized pulley......no issues.
As for performance? Not much, the thing that I noticed was the rpm's climbed with a lil more ease. The engine didnt have to work as hard to get to those higher rpms.
Deecarp just recently put in a pulley and hes running a system and hes got no issues as I remember. He said he felt some good gains as far as performance. But I'll let him disclosed his findings....
As for performance? Not much, the thing that I noticed was the rpm's climbed with a lil more ease. The engine didnt have to work as hard to get to those higher rpms.
Deecarp just recently put in a pulley and hes running a system and hes got no issues as I remember. He said he felt some good gains as far as performance. But I'll let him disclosed his findings....
- Location
- Vancouver, Canada
I see. Thanks for the info, Pscine and Jeff. :.smile:
Can you explain or show a picture of what, "sleeving" is on the pulley?
Attachments
HYME
Member
- Location
- Colorado Springs, CO
that wrp pully looks like a UR pully with a wrp stamp on it.
How does the UR pully compare to the stillen. I noticed stillen has the set of three pullies for not much more than a single UR pully
btw, what size is the stock crank pully?
How does the UR pully compare to the stillen. I noticed stillen has the set of three pullies for not much more than a single UR pully
btw, what size is the stock crank pully?
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I can't comment on the WRP, but I can on the UR, I love the dam thing. I just makes me wish I was RWD. There is a nice gain having the underdrive. I would think with the ligther stock pulley you feel it gain as well. No issue running my audio system with it either.
Got the UR stock size pulley set today. Looking forward to the install. This thread was great for the discussion and helped me decide stock/underdrive & brand.
P
Psiclne
Guest
I took my WRP off this weekend.....look for it in the classifieds this weekend.
- Location
- Dallas, TX
- Car
- 2007 FX35 RWD
I heard bad things about the man, but was there anything wrong with the product?
P
Psiclne
Guest
I didnt have any issues with it - it does what its supposed to do, take weight off the crank.