Th3Doctor

I saw that crank and pulley set from RR racing could significantly decrease the amount of rotational load on the engine, I was wondering if there are any long term users that has this part installed or any users since the v8 is spread across the RC-F, GS-F, IS-F, and LC 500. How does it drive, are there additional vibrations, and how is it holding up.

mg1972

From what I understand the RR Racing crank damper/pulley is made by ATI, and here is what they say about their dampers.

Q: How often should I have my damper rebuilt or inspected?
A: If you have had your damper for nearly 10 years, you should send it in to have the rubber O-ring inspected and changed. ATI will also check for any problems with the hub and other damper components. We can have your SFI damper re-certified if necessary. Please speak to your ATI technician for further information. If you are racing in any sort of pro class or have over 800 horsepower, you should consider having your damper rebuilt at the end of each season. Remember, the smaller the damper you run on your car, the harder it has to work to protect your engine!

Th3Doctor

Thank you that is good to know, 10 years is a pretty long time. Looks like the crank pulley set is reliable, I won't be doing any tracking (maybe) I just want the improved acceleration from first to second gear.

cp2

iTrader: (1)

I bought and installed the crank pulley and first through third gears in the higher rpm range flies!!! can definitely feel the pull when accelerating. don't think I'm going to buy the 2 other pump pulleys, but not really needed. def worth the money especially if you get it during any of their sales promotions.

RRRacing

iTrader: (1)

We used ATI internal Dampers in the past and fit them for Lexus when installing our Superchargers. The Ultimate Damper available in question is a 100% RR Racing made it does not use ATI parts anymore.

-Justin

05RollaXRS

I have had those for a year and zero issues. Car drives like stock. Everything works like before. Only difference is, it has the light flywheel effect that I had when I installed a light 8 lbs chromoly flywheel back in the day on my 2ZZ-GE Corolla XRS. Engine revs up a lot faster and revs drop a lot faster as well. Because of the lack of internal inertia, there is more jerkiness and snappiness and I absolutely love whiplashing effect.

05RollaXRS

Forgot, I had made a video in 2023 of just how fast the engine responds to various types of blips (light and aggressive)