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Tray@Forged · 08-27-2010, 12:39 PM

Hi everyone, it's Sharif again,

As promised, I wanted to give you a detailed track test review now that the JRZ RS Pro's are installed, corner balanced, and aligned. As you will recall, I elected to use a 1000lb/1000lb square setup to best suit my driving style. I am also running Hoosier R6's in 245 front and 315 rear mounted to those beautiful HRE C90 18 inch wheels.

So here is the complete rundown of the suspension related bits:
JRZ RS Pro's 1000lb/1000lb
TPC Racing Sway Bars
TPC Drop Link
Porsche Cup Car rear Toe Arms
Hoosier R6's 245/315 18's

While selecting these fairly aggressive springs rates for a weekend fun track day car, I was resigned to the fact that the ride would be fairly harsh on normal roads. But I was pleasantly surprised that the JRZ RS Pro's were incredibly compliant on the street. If you are familiar with Atlanta area roads, they are very rough, and the JRZ's soaked up the bumps with ease. There was also no noticeable noise inside the cabin and overall they had terrific compliance. This is definitely a package I would feel comfortable driving on the street. It's firm but not as bouncy as the OEM shocks.

Now lets get to the fun part: The track test at Sebring's 12 hr circuit. Sebring is a great track for testing suspension. There is a huge variery of corners, from smooth wide open throttle high speed speeders, to very tight technical sections and of course the super bumpy and world renown turns 17 and 1.

Bryan from JRZ was on hand to help translate my feedback into adjustments that provided the required results. In, a nutshell, the handling improvement is literally a nigh and day experience. Our spring rate choice was perfect! The balance of the car was exactly as I would request. With a few adjustments to the shocks, the stability under braking was extremely confidence inspiring, and turn in was precise and immediate. It was very easy to trail brake the car into corners while rotating the car gently torward the apex. I was able to apply throttle fairly early, and just a few steering corrections on the bumpy surfaces of Sebring. The car was dead flat and planted, and the body roll of the stock suspension was completely gone. I honestly couldn't have asked for a better handling GT3 on this track.

The next step, however, is going to be an upgraded LSD, as I am still getting some tire slip and spin on hard corner exit, and probably given up a tenth or two on each corner exit.

I was so pleased with the results, I ended up giving out about 10 rides to customers, friends, and others. This car puts a big smile on my face every time I drive it.

Next stop is Road Atlanta on Sept 11-12th with the BMWCCA. This will be another great opportunity to see how the new suspension setup deals with Road Atlanta's elevation changes and smoother track surface. Looking forward to.

Happy to answer any questions you all have.

Sharif@Forged

YouTube - Forged Performance Porsche GT3 Sebring Redline Time Attack

08-27-2010, 12:39 PM	#7 (permalink)
Tray@Forged The370Z.com Sponsor Join Date: Jan 2010 Location: Johns Creek, GA Posts: 540 Drives: 05 Infiniti FX35, Rep Power: 0	Hi everyone, it's Sharif again, As promised, I wanted to give you a detailed track test review now that the JRZ RS Pro's are installed, corner balanced, and aligned. As you will recall, I elected to use a 1000lb/1000lb square setup to best suit my driving style. I am also running Hoosier R6's in 245 front and 315 rear mounted to those beautiful HRE C90 18 inch wheels. So here is the complete rundown of the suspension related bits: JRZ RS Pro's 1000lb/1000lb TPC Racing Sway Bars TPC Drop Link Porsche Cup Car rear Toe Arms Hoosier R6's 245/315 18's While selecting these fairly aggressive springs rates for a weekend fun track day car, I was resigned to the fact that the ride would be fairly harsh on normal roads. But I was pleasantly surprised that the JRZ RS Pro's were incredibly compliant on the street. If you are familiar with Atlanta area roads, they are very rough, and the JRZ's soaked up the bumps with ease. There was also no noticeable noise inside the cabin and overall they had terrific compliance. This is definitely a package I would feel comfortable driving on the street. It's firm but not as bouncy as the OEM shocks. Now lets get to the fun part: The track test at Sebring's 12 hr circuit. Sebring is a great track for testing suspension. There is a huge variery of corners, from smooth wide open throttle high speed speeders, to very tight technical sections and of course the super bumpy and world renown turns 17 and 1. Bryan from JRZ was on hand to help translate my feedback into adjustments that provided the required results. In, a nutshell, the handling improvement is literally a nigh and day experience. Our spring rate choice was perfect! The balance of the car was exactly as I would request. With a few adjustments to the shocks, the stability under braking was extremely confidence inspiring, and turn in was precise and immediate. It was very easy to trail brake the car into corners while rotating the car gently torward the apex. I was able to apply throttle fairly early, and just a few steering corrections on the bumpy surfaces of Sebring. The car was dead flat and planted, and the body roll of the stock suspension was completely gone. I honestly couldn't have asked for a better handling GT3 on this track. The next step, however, is going to be an upgraded LSD, as I am still getting some tire slip and spin on hard corner exit, and probably given up a tenth or two on each corner exit. I was so pleased with the results, I ended up giving out about 10 rides to customers, friends, and others. This car puts a big smile on my face every time I drive it. Next stop is Road Atlanta on Sept 11-12th with the BMWCCA. This will be another great opportunity to see how the new suspension setup deals with Road Atlanta's elevation changes and smoother track surface. Looking forward to. Happy to answer any questions you all have. Sharif@Forged YouTube - Forged Performance Porsche GT3 Sebring Redline Time Attack