KJR Crank Pulley or UR Crank Pulley?
My UR claimed 1.6 pounds I think the stock weighed in at a FAT 6 pounds.Noticable difference with either as far as faster rev, not much on HP but I havent ran a dyno yet will soon
I always go to the same place to dyno so we will see if the gains are close but it was warm last time I ran a dyno and it will have a slight difference.
I always go to the same place to dyno so we will see if the gains are close but it was warm last time I ran a dyno and it will have a slight difference.
According to their website they don't offer it for the Z. Underdrive only.
Anyone know where I can get the BEST deal on the KJR pully???
Anyone know where I can get the BEST deal on the KJR pully???
Last edited by Havok_RLS2; Feb 19, 2006 at 11:28 AM.
I've sent an e-mail to the owner of CNR Billet and invited them to chime in with some information on their product. It's good to have another player in the aftermarket supporting their products on the forum. 
As I said before I sent and e-mail to CNR Billet inviting them to the forum. I'd like to give an update if I may.
Just a little over a hour ago the OWNER (Yes I said OWNER) of CNR contacted me on my cell phone. How many many times has the owner of UR contacted any of their customers to answer question regarding their product?
Talk about A+++ for customer service!!!
These guys have been making underdrive pulleys for some of the top teams in racing for years. They also do complete custom work at the customers request and do it at a lower cost than everyone else. And if all that ain't enough... They're local to us in the maryland/DC area.
After our phone conversation I know where my money is going for my 350Z pulleys set. OH! And another thing... For all those who think " You get what you pay for"... This time around you'd be WRONG not to mention VERY Surprised to know what you're really paying for. As for me... I'm supporting my local shop. 
Just a little over a hour ago the OWNER (Yes I said OWNER) of CNR contacted me on my cell phone. How many many times has the owner of UR contacted any of their customers to answer question regarding their product?
Talk about A+++ for customer service!!!
These guys have been making underdrive pulleys for some of the top teams in racing for years. They also do complete custom work at the customers request and do it at a lower cost than everyone else. And if all that ain't enough... They're local to us in the maryland/DC area.
After our phone conversation I know where my money is going for my 350Z pulleys set. OH! And another thing... For all those who think " You get what you pay for"... This time around you'd be WRONG not to mention VERY Surprised to know what you're really paying for. As for me... I'm supporting my local shop.
Originally Posted by MustGoFastR
What are the pulley weights?
KJR: 2lbs (from Performance Nissan's site, and balanced)
UR: ?
CNR: ? (balanced?)
stock: ?
KJR: 2lbs (from Performance Nissan's site, and balanced)
UR: ?
CNR: ? (balanced?)
stock: ?
CNR: Coated = Yes (In almost any coating you can think of including hard coating)
CNR: Cost = Cheapest out of anyone else on the market so far. www.cnrbillet.com
CNR wins my vote!
Originally Posted by dgz32
Wasn't aware that UR had a stock-sized crank pulley.
Originally Posted by lamaz
Do U need different belts with the CNRs? Or will the stock belts do?
-LamaZ
-LamaZ
Show you support and give this guy a call... I spent about an hour with him on the phone... He's great people to talk to and REALLY knows his stuff.
Last edited by DavesZ#3; Feb 21, 2006 at 09:47 AM.
Originally Posted by ZU L8R
Stock worked fine for me for the non underdrive version
1. Nissan 350Z Alternator Pulley $45.00
2. Nissan 350Z Alternator Pulley $45.00
3. Nissan 350Z Underdrive Crank Pulley $95.00
4. Nissan 350Z Pulley Set $175.00
Now I'm guessing that #4 includes 1, 2 and 3 as a "combo". What is this magical "Stock size crank pully" that everybody is talking about? I shall refrase my question, with option #4 do I need to purchase some kind of belt, or will be OEM belts work with this?
Thank you,
-LamaZ
Registered User
Joined: Sep 2005
Posts: 327
Likes: 0
From: Texas
As I understand it, the "stock size" crank pulleys (any vendor) are the same size as stock; therefore, they work with stock belts. The only performance gain is lighter weight and faster rev. Also, they look nice. They should have no downside.
The "underdrive" crank pulleys are slightly bigger (?) than stock, creating a 15-20% decrease in accessory load (load from A/C, Power Steering, Alternator). Less accessory load equals greater HP to the wheels, theoretically. Naturally, the underdrive pulleys offer lighter weight and faster rev, as well. And, they look nice. The *potential* downside is... reduced accessory function (e.g. A/C may be less cold, Alternator output may be reduced, etc.)
The pulley sets include a crank pulley (stock or underdrive) and matching accessory pulleys. The accessory pulleys offer no performance gain, but they look nice.
Anyone, please correct me if I am wrong about this.
The "underdrive" crank pulleys are slightly bigger (?) than stock, creating a 15-20% decrease in accessory load (load from A/C, Power Steering, Alternator). Less accessory load equals greater HP to the wheels, theoretically. Naturally, the underdrive pulleys offer lighter weight and faster rev, as well. And, they look nice. The *potential* downside is... reduced accessory function (e.g. A/C may be less cold, Alternator output may be reduced, etc.)
The pulley sets include a crank pulley (stock or underdrive) and matching accessory pulleys. The accessory pulleys offer no performance gain, but they look nice.
Anyone, please correct me if I am wrong about this.
zedated, thanks for the info. I was specifically asking about this "CNR" pulley. A couple of people here mentioned that they got the "stock size", but I can't find any mention of a stock size on their website.
-LamaZ
-LamaZ