Gear ratios of 997 GT3
12-04-2018 | 02:36 PM
#46
Nordschleife Master
Joined: Oct 2009
Posts: 5,167
Likes: 126
From: Loveland, CO
No such thing as 60/40. It’s 40/60. If the installer flips the ramps over to what would be 60/40 the lsd will lock up one wheel and explode several thousand miles later. They are directional.
04-09-2023 | 05:46 PM
#48
Burning Brakes
Joined: Mar 2018
Posts: 835
Likes: 301
appreciate any advice? thanks
04-10-2023 | 12:24 AM
#49
Quit Smokin'
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Joined: Dec 2003
Posts: 2,846
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From: Columbus, Ohio
I put the RS ring and pinion in my 7.2 this spring. I left all the gears alone. I haven’t done any highway cruising yet, but I don’t think I’m going to mind a few extra revs on the interstate. This is the way porsche should have made the car… and I should have done the mod years ago
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Brian Himmelman (04-16-2023)
04-10-2023 | 02:08 PM
#50
Rennlist Member
Joined: Dec 2010
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I recently had the RS 3.89 R&P along with the taller RS 6th and the 4.0 clutch/LWFW installed on my 7.2. The RS gearing and clutch is how the 7.2 should have come from the factory. I found the car utterly boring before in its stock form and it sat in my garage undriven for almost a year. Now it's actually really fun to drive and finally getting some miles put on it.
04-16-2023 | 05:33 PM
#51
Burning Brakes
Joined: Mar 2018
Posts: 835
Likes: 301
I put the RS ring and pinion in my 7.2 this spring. I left all the gears alone. I haven’t done any highway cruising yet, but I don’t think I’m going to mind a few extra revs on the interstate. This is the way porsche should have made the car… and I should have done the mod years ago
04-16-2023 | 05:43 PM
#52
Burning Brakes
Joined: Mar 2018
Posts: 835
Likes: 301
I put the RS ring and pinion in my 7.2 this spring. I left all the gears alone. I haven’t done any highway cruising yet, but I don’t think I’m going to mind a few extra revs on the interstate. This is the way porsche should have made the car… and I should have done the mod years ago
04-17-2023 | 12:03 AM
#53
Quit Smokin'
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Joined: Dec 2003
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From: Columbus, Ohio
So far it seems like only upside to the ring and pinion swap. I don't have a ton of miles on it yet, but my fiance and I both agree that the car should have come with the shorter ring and pinion. I think if i did many highway miles I would probably appreciate the taller 6th gear. Cruising at 70 just over 3k doesn't seem bad at all, but if I bump it up to 80 and 4k it starts to seem a bit much. This configuration will probably be better for my drivers license. I have no plans to change it, but If i had to have Copans in there again, i would consider swapping out 6th. All the other ratios seem perfect.
05-03-2023 | 08:36 PM
#54
Burning Brakes
Joined: Mar 2018
Posts: 835
Likes: 301
I did what has been suggested in the preceding posts to my 2007 RS. I replaced the OEM 3.41 R&P with the 3.89 that comes in the 997.2 GT3/RS. I also changed out the 6th gearset to the taller 997.2 ratio. The acceleration - as well as the ability to leave a stop - is greatly improved, and freeway cruising rpm is perfect. While in there, I installed a 40/60 Guard LSD unit guts into the OEM casting, changed out the RMS (for a Turbo unit - yea!! no leaks anymore), and replaced the clutch components (LWFW was fine). All told, around $12-13K. Not cheap.
05-03-2023 | 08:38 PM
#55
Burning Brakes
Joined: Mar 2018
Posts: 835
Likes: 301
I recently had the RS 3.89 R&P along with the taller RS 6th and the 4.0 clutch/LWFW installed on my 7.2. The RS gearing and clutch is how the 7.2 should have come from the factory. I found the car utterly boring before in its stock form and it sat in my garage undriven for almost a year. Now it's actually really fun to drive and finally getting some miles put on it.
