Porsche Babblers  

Go Back   Porsche Babblers > Porsche Boxster and Cayman Forum > Boxster / Cayman

Boxster / Cayman Porsche Boxster and Cayman Forum - Topics and discussions about the Porsche Boxster and Cayman


Reply
 
Thread Tools
Old March 18th, 2005, 04:59 PM   #1
footfknmasta
Guest
 
Join Date: Mar 2005
Posts: 2
2005 Boxster - is 6 speed worth it?

I'm thinking of buying a 2005 and wanted to know if anyone has driven a 5 sp and 6 sp boxster (not s). Any input would be appreciated.
footfknmasta is offline   Reply With Quote
Old March 18th, 2005, 11:12 PM   #2
Mdreiver
Senior Member
 
Mdreiver's Avatar
 
Join Date: Dec 2003
Location: One corner ahead of Johnny Law
Posts: 817
How much does the option cost?

What are the ratios for each?

I don't want to do the research but I'd be happy to give you some analysis if you provide the numbers.
__________________
I think I have an extra "goto 10" line.
Mdreiver is offline   Reply With Quote
Old March 19th, 2005, 07:49 AM   #3
footfknmasta
Guest
 
Join Date: Mar 2005
Posts: 2
Cost and ratios

The option costs around $2700 but includes PASM (Active Suspension Mgmt System) and is lowered by 10mm. It looks like the 2005's sit a bit higher so I like the option to lower it, too.

Ratios (5 SP)
1-3.5
2-2.12
3-1.43
4-1.09
5-0.084
R-3.44

(6 SP)
1-3.67
2-2.05
3-1.41
4-1.13
5-0.097
6-0.82
R-3.33
footfknmasta is offline   Reply With Quote
Old March 19th, 2005, 08:34 AM   #4
Tom M
Site Founder
 
Tom M's Avatar
 
Join Date: Dec 2003
Location: Westfield, IN
Posts: 2,635
To make a truly informed decision one has to know the final drive ratio. Does it change when using the 5-speed vs. the 6-speed? I know they're different in the base vs. the S.

Here's what they were in 2000.

The column labelled "Gear" should be pretty obvious. The columns under the "Raw" heading are the gear ratios for the manual transmission for the respective model. The "Normalized" column has the gear ratios multiplied by the final drive ratio. The final columns compare the normalized, real world, numbers to each other to various gear combinations.

Code:
          Raw        Normalized       Gear       Actual 
Gear   Base   S       Base    S     Base  S    Difference 

  1    3.50  3.82    12.46  13.14     1   1       94.8% 
  2    2.12  2.20     7.55   7.57     2   2       99.7% 
  3    1.43  1.52     5.09   5.23     3   3       97.4% 
  4    1.09  1.22     3.88   4.20     4   4       92.5% 
  5    0.84  1.02     2.99   3.51     4   5      110.6% 
  6          0.84            2.89     5   5       85.2% 
                                      5   6      103.5% 

Final Drive Ratios:  Base = 3.56   S = 3.44
OTOH - If the final drive ratio is the same for the 5-speed and the 6-speed it would appear that the 6-speed would appear to be a bit quicker as the ratios are slightly lower through the bottom 3 gears.
__________________
Tom M (Westfield, IN)
'04 996 C4S MBM/GG (gone)
'00 986 S MBK/NBL/BLK (gone)
'11 958 Cayenne S
Tom M is offline   Reply With Quote
Old March 21st, 2005, 10:16 AM   #5
Mdreiver
Senior Member
 
Mdreiver's Avatar
 
Join Date: Dec 2003
Location: One corner ahead of Johnny Law
Posts: 817
You beat me to it. A few additions though...

Your numbers are base vs S. I don't know if they're accurate (but I assume so) but footknmasta actually provided the numbers for the 987 base in both 5 spd and 6 spd versions and they differ a bit from your 5spd base vs 6spd S chart. But your logic should be clear so if anyone's interested, it would be easy to repeat using footnkmasta's numbers.

Not sure if this is obvious to everyone so I'll also add this. To see just how important a smaller gear would be to performance, you can look it in percentage like it is in this chart. But you can also do what the gears actually do and multiply it by the engine torque. Engine torque isn't actually the key ingredient to acceleration. Torque applied to the wheels (TOT) is. So, take the peak engine torque as T and do this math for each gear from each tranny: TOT=(T * gear * diff). Then decide if the additional torque applied to the wheels seems to justify the added cost.
__________________
I think I have an extra "goto 10" line.
Mdreiver is offline   Reply With Quote
Old March 21st, 2005, 11:12 AM   #6
Tom M
Site Founder
 
Tom M's Avatar
 
Join Date: Dec 2003
Location: Westfield, IN
Posts: 2,635
The biggest point I tried to make was also that it depends on whether or not they change the final drive ratio when they change the transmission. Just having the transmission gearing may not be enough to make the decision.
__________________
Tom M (Westfield, IN)
'04 996 C4S MBM/GG (gone)
'00 986 S MBK/NBL/BLK (gone)
'11 958 Cayenne S
Tom M is offline   Reply With Quote
Old March 21st, 2005, 11:28 AM   #7
Mdreiver
Senior Member
 
Mdreiver's Avatar
 
Join Date: Dec 2003
Location: One corner ahead of Johnny Law
Posts: 817
That's true, but he listed the final drive ratios as well. I can only assume that he looked up the right numbers for the car and trannies he was curious about.
__________________
I think I have an extra "goto 10" line.
Mdreiver is offline   Reply With Quote
Old March 21st, 2005, 11:49 AM   #8
Tom M
Site Founder
 
Tom M's Avatar
 
Join Date: Dec 2003
Location: Westfield, IN
Posts: 2,635
Quote:
Originally Posted by Dumb ole Donkey
That's true, but he listed the final drive ratios as well. I can only assume that he looked up the right numbers for the car and trannies he was curious about.
Hmmm. I made the assumption that R was the Reverse gearing and not the final drive ratio.
__________________
Tom M (Westfield, IN)
'04 996 C4S MBM/GG (gone)
'00 986 S MBK/NBL/BLK (gone)
'11 958 Cayenne S
Tom M is offline   Reply With Quote
Old March 21st, 2005, 12:22 PM   #9
Mdreiver
Senior Member
 
Mdreiver's Avatar
 
Join Date: Dec 2003
Location: One corner ahead of Johnny Law
Posts: 817
Ahh. I assumed it stood for Rear Diff. You're quite possibly right though.
__________________
I think I have an extra "goto 10" line.
Mdreiver is offline   Reply With Quote
Reply

  Porsche Babblers > Porsche Boxster and Cayman Forum > Boxster / Cayman



Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Buying a Used Boxster (Rev 9) mikefocke Reviews 0 October 18th, 2005 01:30 PM
Buying a Used Boxster (Rev 8) mikefocke Reviews 8 July 28th, 2005 08:58 AM
The new Boxster and Boxster S Tom M Boxster / Cayman 2 September 14th, 2004 09:21 AM
News: 2004 Boxster Clubsport, 2005 Boxster Coupe Paul in CA Boxster / Cayman 2 August 14th, 2002 11:04 PM

Google+


Copyright © 2001-2014 Babblers. All rights reserved.
Babblers is a Porsche Boxster and Cayman enthusiast's forum, but it is in no way affiliated with, nor does it represent Porsche of Stuttgart, Germany.