How common is it to re-gear a Cayman S transmissio?
10-30-2013, 06:03 PM
#16
Rennlist Member
Rick
You'll be fine with the (what, maybe $10K?) dollars sitting in your pocket and stock gears. Unlike the stock 993, the cayman S doesn't bog down going up the toe.
You'll be fine with the (what, maybe $10K?) dollars sitting in your pocket and stock gears. Unlike the stock 993, the cayman S doesn't bog down going up the toe.
10-31-2013, 01:14 AM
#18
Nordschleife Master
The accurate comment would be the former, for now. BGB Motorsports prototyped our new gearsets in their GX Class winning Cayman in Grand Am Rolex this year. Ran them all season without failure.
I thought John at BGB had published an ad here yesterday but looks like it hasn't come up yet. They are going to be selling them before the snow melts.
Like late 993s and GT3s, 1 and 2 are cut on the mainshaft, so we aren't make those gears because of cost. But there will be a variety of 3rd, 4th, 5th and 6th gear choices available to you.
There was previously talk of a ring and pinion. We made some prototypes of those as well. We weren't completely satisfied with the fitment and durability, so will likely only make gears going forward.
Regards,
Matt
I thought John at BGB had published an ad here yesterday but looks like it hasn't come up yet. They are going to be selling them before the snow melts.
Like late 993s and GT3s, 1 and 2 are cut on the mainshaft, so we aren't make those gears because of cost. But there will be a variety of 3rd, 4th, 5th and 6th gear choices available to you.
There was previously talk of a ring and pinion. We made some prototypes of those as well. We weren't completely satisfied with the fitment and durability, so will likely only make gears going forward.
Regards,
Matt
10-31-2013, 01:16 AM
#19
Nordschleife Master
Just out of monkey curiosity I looked at some of the modern transmissions compared to the g50/30 in my car.
The Caymans look pretty decent stock, all use factory rev limits and tires are 265/40 x18 for the newer cars and 265/35 x18 for my old 993, The Cayman S manual 6 speed loks particularly good stock.
The Caymans look pretty decent stock, all use factory rev limits and tires are 265/40 x18 for the newer cars and 265/35 x18 for my old 993, The Cayman S manual 6 speed loks particularly good stock.
10-31-2013, 08:59 AM
#20
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Ladies Gents,
Matt was quick to reply for me but let me add a few things:
1. The 987.2 transmission has the highest quality synchros we have seen on any modern day street-stock Porsche. It's by far and away the most reliable piece we have ever seen.
2. The folks at Guard Transmission came to our aid this year because our little Cayman wasn't even allowed to run a sequential. Gear sets and ratios however were open so Guard provided us with an alternate ring and pinion but more importantly, short ratio gears. So not only do they exist, but we can get them for you.
The reality is that Guard has been doing this long enough and we realized that the car already has a 3.89 final drive ratio and going to a 4.12, while an improvement, isn't enough for the customer.
Given that Guard Transmission gear stacks have several 24 hour races on their resum, the decision was easy which project to pursue to deliver performance to the customer and have it be more worthwhile on the wallet.
The 987.1/987.2 transmissions are very easy to work on and rebuild. We can rebuild your existing one, set up your LSD or provide short ratio gears for the track from Guard. Given that the Cayman S is geared for 191mph, there is a bunch of un-used acceleration waiting for you there. I have more information for those interested.
Thanks.
John
Matt was quick to reply for me but let me add a few things:
1. The 987.2 transmission has the highest quality synchros we have seen on any modern day street-stock Porsche. It's by far and away the most reliable piece we have ever seen.
2. The folks at Guard Transmission came to our aid this year because our little Cayman wasn't even allowed to run a sequential. Gear sets and ratios however were open so Guard provided us with an alternate ring and pinion but more importantly, short ratio gears. So not only do they exist, but we can get them for you.
The reality is that Guard has been doing this long enough and we realized that the car already has a 3.89 final drive ratio and going to a 4.12, while an improvement, isn't enough for the customer.
Given that Guard Transmission gear stacks have several 24 hour races on their resum, the decision was easy which project to pursue to deliver performance to the customer and have it be more worthwhile on the wallet.
The 987.1/987.2 transmissions are very easy to work on and rebuild. We can rebuild your existing one, set up your LSD or provide short ratio gears for the track from Guard. Given that the Cayman S is geared for 191mph, there is a bunch of un-used acceleration waiting for you there. I have more information for those interested.
Thanks.
John
10-31-2013, 09:56 AM
#21
Here are the speeds in gears, Cayman 7400rpm, 265/40 x18 tires, 993 6800rpm, 265/35 x18 tires, 7th gear has been ignored
Paul is correct, Cayman S PDK is very similar to 993 G50/20( anf then has another gear to go), but the Cayman S 6 spd manual used in 2011 is shorter geared than my 993Cup trans, but not as short is Ricks current trans which is a regeared G50/20
Of course this all depends on the gear ratios I dug out being correct, so if anyone has more or better info on the Cayman ratios, I'm all ears. The 993 ratios I am sure of.
Paul is correct, Cayman S PDK is very similar to 993 G50/20( anf then has another gear to go), but the Cayman S 6 spd manual used in 2011 is shorter geared than my 993Cup trans, but not as short is Ricks current trans which is a regeared G50/20
Of course this all depends on the gear ratios I dug out being correct, so if anyone has more or better info on the Cayman ratios, I'm all ears. The 993 ratios I am sure of.
10-31-2013, 03:39 PM
#24
Nordschleife Master
Here are the speeds in gears, Cayman 7400rpm, 265/40 x18 tires, 993 6800rpm, 265/35 x18 tires, 7th gear has been ignored
Paul is correct, Cayman S PDK is very similar to 993 G50/20( anf then has another gear to go), but the Cayman S 6 spd manual used in 2011 is shorter geared than my 993Cup trans, but not as short is Ricks current trans which is a regeared G50/20
Of course this all depends on the gear ratios I dug out being correct, so if anyone has more or better info on the Cayman ratios, I'm all ears. The 993 ratios I am sure of.
Paul is correct, Cayman S PDK is very similar to 993 G50/20( anf then has another gear to go), but the Cayman S 6 spd manual used in 2011 is shorter geared than my 993Cup trans, but not as short is Ricks current trans which is a regeared G50/20
Of course this all depends on the gear ratios I dug out being correct, so if anyone has more or better info on the Cayman ratios, I'm all ears. The 993 ratios I am sure of.
I am talking about the actual ratio itself, of the individual gears, 6spd, not PDK and not speed in gear. The Cayman does have a final drive advantage of 3.89 versus the 3.44 of the 993. But the actual ratios are as follows:
993:
1st 3.82
2nd 2.05
3rd 1.41
4th 1.12
5th 0.92
6th 0.78
Cayman S
1st 3.67
2nd 2.05
3rd 1.41
4th 1.13
5th 0.92
6th 0.82
Even with the shorter 6th, the gears are still way too tall and more importantly too far apart. We will be tightening it up and shortening it to something similar to a 996 Cup, and possibly even have options that are a little shorter than that.
Regards,
Matt
10-31-2013, 04:48 PM
#25
Bill,
I am talking about the actual ratio itself, of the individual gears, 6spd, not PDK and not speed in gear. The Cayman does have a final drive advantage of 3.89 versus the 3.44 of the 993. But the actual ratios are as follows:
993:
1st 3.82
2nd 2.05
3rd 1.41
4th 1.12
5th 0.92
6th 0.78
Cayman S
1st 3.67
2nd 2.05
3rd 1.41
4th 1.13
5th 0.92
6th 0.82
Even with the shorter 6th, the gears are still way too tall and more importantly too far apart. We will be tightening it up and shortening it to something similar to a 996 Cup, and possibly even have options that are a little shorter than that.
Regards,
Matt
I am talking about the actual ratio itself, of the individual gears, 6spd, not PDK and not speed in gear. The Cayman does have a final drive advantage of 3.89 versus the 3.44 of the 993. But the actual ratios are as follows:
993:
1st 3.82
2nd 2.05
3rd 1.41
4th 1.12
5th 0.92
6th 0.78
Cayman S
1st 3.67
2nd 2.05
3rd 1.41
4th 1.13
5th 0.92
6th 0.82
Even with the shorter 6th, the gears are still way too tall and more importantly too far apart. We will be tightening it up and shortening it to something similar to a 996 Cup, and possibly even have options that are a little shorter than that.
Regards,
Matt
I have 2011 Cayman S manual 6 spd
1st 3.909
2nd 2.292
3rd 1.654
4th 1.303
5th 1.081
6th 0.881
The info I have for the 2007 is incomplete cwp=9:32=3.556
Cayman S
1st 3.31
2nd 1.95
3rd 1.41
4th 1.13
5th 0..97
6th .82
Last edited by Bill Verburg; 10-31-2013 at 05:06 PM.
10-31-2013, 07:35 PM
#27
Nordschleife Master
I looked it up. Those are the first 6 gears for the PDK.
Looks like the 981 S does get a tick shorter 3rd in the manual but not by much, only down to 1.46.
http://press.porsche.com/vehicles/20...ifications.pdf
Looks like the 981 S does get a tick shorter 3rd in the manual but not by much, only down to 1.46.
http://press.porsche.com/vehicles/20...ifications.pdf
11-05-2013, 07:06 AM
#28
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I looked it up. Those are the first 6 gears for the PDK.
Looks like the 981 S does get a tick shorter 3rd in the manual but not by much, only down to 1.46.
http://press.porsche.com/vehicles/20...ifications.pdf
Looks like the 981 S does get a tick shorter 3rd in the manual but not by much, only down to 1.46.
http://press.porsche.com/vehicles/20...ifications.pdf
01-27-2018, 10:02 PM
#29
1st Gear
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987.1 3.2 3rd gear synchro and 3rd gear
Ladies Gents,
Matt was quick to reply for me but let me add a few things:
1. The 987.2 transmission has the highest quality synchros we have seen on any modern day street-stock Porsche. It's by far and away the most reliable piece we have ever seen.
2. The folks at Guard Transmission came to our aid this year because our little Cayman wasn't even allowed to run a sequential. Gear sets and ratios however were open so Guard provided us with an alternate ring and pinion but more importantly, short ratio gears. So not only do they exist, but we can get them for you.
The reality is that Guard has been doing this long enough and we realized that the car already has a 3.89 final drive ratio and going to a 4.12, while an improvement, isn't enough for the customer.
Given that Guard Transmission gear stacks have several 24 hour races on their resum, the decision was easy which project to pursue to deliver performance to the customer and have it be more worthwhile on the wallet.
The 987.1/987.2 transmissions are very easy to work on and rebuild. We can rebuild your existing one, set up your LSD or provide short ratio gears for the track from Guard. Given that the Cayman S is geared for 191mph, there is a bunch of un-used acceleration waiting for you there. I have more information for those interested.
Thanks.
John
Matt was quick to reply for me but let me add a few things:
1. The 987.2 transmission has the highest quality synchros we have seen on any modern day street-stock Porsche. It's by far and away the most reliable piece we have ever seen.
2. The folks at Guard Transmission came to our aid this year because our little Cayman wasn't even allowed to run a sequential. Gear sets and ratios however were open so Guard provided us with an alternate ring and pinion but more importantly, short ratio gears. So not only do they exist, but we can get them for you.
The reality is that Guard has been doing this long enough and we realized that the car already has a 3.89 final drive ratio and going to a 4.12, while an improvement, isn't enough for the customer.
Given that Guard Transmission gear stacks have several 24 hour races on their resum, the decision was easy which project to pursue to deliver performance to the customer and have it be more worthwhile on the wallet.
The 987.1/987.2 transmissions are very easy to work on and rebuild. We can rebuild your existing one, set up your LSD or provide short ratio gears for the track from Guard. Given that the Cayman S is geared for 191mph, there is a bunch of un-used acceleration waiting for you there. I have more information for those interested.
Thanks.
John
I was wanting a 3rd gear synchro and cog for my 987.1 boxster s 2005 3.2l 6 speed manual.
It was crunching for a year until it wouldn't work at all.
Thanks.
Dan
