MyG37 - View Single Post - Review Say hello to my UR Underdrive Crank Pulley

G37Sam · 05-09-2009, 12:46 AM

Just got my hands on those!

Install

Well it isn't the easiest job to do, unless you know what you're doing have it professionally installed. The OEM bolts are so damn tight it's not funny. The bolt which bolts the OEM Pulley to the crank shaft felt like it was welded to the crank! The mechanic suggested removing the starter and holding the flywheel from one side and unscrewing from the other and bingo the bolt is loose. A little WD40 and some pushing & hammering and it finally came out.

Here's the bolt I'm talking about:

OEM vs. UR side by side:

The OEM felt so much heavier!

Impression

After driving around for a while it did feel like it revved faster when I floored it. It also felt a little more responsive when I was swimming through traffic. I wanted to get a before/after dyno on this but I was quoted like 300 bux!! That's more than the pulley & the install combined lol I'm happy with it, tails even easier to slide I'm not complaining haha

05-09-2009, 12:46 AM	#1
G37Sam Administrator 2008 Infiniti G37 Trader Score: (0) Join Date: Aug 2008 Location: UAE Posts: 6,613	Say hello to my UR Underdrive Crank Pulley Just got my hands on those! Install Well it isn't the easiest job to do, unless you know what you're doing have it professionally installed. The OEM bolts are so damn tight it's not funny. The bolt which bolts the OEM Pulley to the crank shaft felt like it was welded to the crank! The mechanic suggested removing the starter and holding the flywheel from one side and unscrewing from the other and bingo the bolt is loose. A little WD40 and some pushing & hammering and it finally came out. Here's the bolt I'm talking about: OEM vs. UR side by side: The OEM felt so much heavier! Impression After driving around for a while it did feel like it revved faster when I floored it. It also felt a little more responsive when I was swimming through traffic. I wanted to get a before/after dyno on this but I was quoted like 300 bux!! That's more than the pulley & the install combined lol I'm happy with it, tails even easier to slide I'm not complaining haha __________________ '08 AG G37S 5AT \| Fully Loaded \| Tint \| Clear Bra \| FI CF Catback \| PC Rims \| BB's V2 GK \| Eibach Pro Kit \| Painted Grille \| 4x20mm H&R Spacers \| Stillen 3rd Gen Intakes \| FI Non-Res Test Pipes \| Customized Fox Resonators \| FR:245/40 RR:275/35 \| UR Crank Pulley \| PIAA Fogs \| Debadged & Valenced \| Painted Headlights Before you post: - Check out this lovely feature! - Read our Guidelines - Read the forum rules - Learn how to post Getting lost in this place? \| Want to become premier? \| Want to mod but don't know where to start? \| Need specs of OEM wheels? \| Got G? Check In! \| We know what a G looks like, what do you look like? \| Classic post? Post it up Last edited by G37Sam; 05-11-2009 at 12:23 PM.