Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical Chat

Post Reply
 
LinkBack Thread Tools Display Modes
Old 06-13-2012, 06:34 PM   #1
Registered User
 
Join Date: Feb 2011
Location: Sacramento
Posts: 98
Transmission Compatibility

I've got a Boxster project car w/o engine or trans, and am looking at what manual transmissions might be a good swap in the car. The engine going in isn't quite decided yet, but the letter V and the number 8 are in play.
The boxster trans is too expensive for my under $5k project.
I don't mind fabricating, but why make it harder.
The engine will have 250-350 hp, so it can't be something whimpy.

A 944 trans are fairly easy to find, and appears to have the same 6-bolt attachment for the axles shafts, that looks like a plus if it does.

I may have to go with a transverse setup, so any suggestions there would be good.

thanks,
jack

nimblemotorsports is offline   Reply With Quote
Old 06-13-2012, 06:42 PM   #2
Track rat
 
Topless's Avatar
 
Join Date: Nov 2006
Location: Southern ID
Posts: 3,701
Garage
All the adaptor hardware for mating an LS3 to a 997 trans have been worked out. This would be a sweet match if you have the dinero.
__________________
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
Topless is offline   Reply With Quote
Old 06-13-2012, 08:09 PM   #3
Registered User
 
Join Date: Feb 2011
Location: Sacramento
Posts: 98
Quote:
Originally Posted by Topless View Post
All the adaptor hardware for mating an LS3 to a 997 trans have been worked out. This would be a sweet match if you have the dinero.
well I don't have the dinero for a boxster trans, certainly not for a 997 trans.
but interesting, a LS3 v8 will fit in the boxster?
nimblemotorsports is offline   Reply With Quote
Old 06-13-2012, 08:50 PM   #4
Registered User
 
Join Date: Oct 2011
Location: sac. ca
Posts: 156
03 PORSCHE BOXSTER 5 SPEED TRANSMISSION 2.7 | eBay

These guys are in Sac and reasonable too.
__________________
98 boxster
82 280sl parts for sale
feelyx is offline   Reply With Quote
Old 06-13-2012, 08:53 PM   #5
Moderator
 
Join Date: Feb 2012
Location: DFW
Posts: 782
Garage
Word around the forums is that Audi transmissions are compatible with boxsters. Supposedly they bolt right up, read about it a while back.

986 five-speed tranny - unmodified Audi 012?

Not bad if they are $200-$400.

Last edited by Kenny Boxster; 06-13-2012 at 08:56 PM.
Kenny Boxster is offline   Reply With Quote
Old 06-13-2012, 10:20 PM   #6
Registered User
 
Join Date: Feb 2011
Location: Sacramento
Posts: 98
Quote:
Originally Posted by Kenny Boxster View Post
Word around the forums is that Audi transmissions are compatible with boxsters. Supposedly they bolt right up, read about it a while back.

986 five-speed tranny - unmodified Audi 012?

Not bad if they are $200-$400.
great, thanks!
nimblemotorsports is offline   Reply With Quote
Old 06-14-2012, 06:35 AM   #7
Track rat
 
Topless's Avatar
 
Join Date: Nov 2006
Location: Southern ID
Posts: 3,701
Garage
Quote:
Originally Posted by nimblemotorsports View Post
well I don't have the dinero for a boxster trans, certainly not for a 997 trans.
but interesting, a LS3 v8 will fit in the boxster?
That is a shame. A 6.2L, 430hp Boxster would be a potent ride. With a cast aluminum block, the LS3 is very close in size and weight to a Boxster 2.5L motor. You would need the 997 trans to handle the high torque numbers without scattering parts though. Renegade is working on one of these transplants now.
__________________
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.

Last edited by Topless; 06-14-2012 at 07:02 AM.
Topless is offline   Reply With Quote
Old 06-15-2012, 08:31 AM   #8
Registered User
 
Join Date: Oct 2008
Location: Gilbert, AZ
Posts: 266
Quote:
Originally Posted by nimblemotorsports View Post
The boxster trans is too expensive for my under $5k project.
Best of luck with that...
kcpaz is offline   Reply With Quote
Old 06-15-2012, 07:33 PM   #9
Registered User
 
Join Date: Feb 2011
Location: Sacramento
Posts: 98
Quote:
Originally Posted by kcpaz View Post
Best of luck with that...
off to a good start, it is with the help of people here just saved me $500 already.
nimblemotorsports is offline   Reply With Quote
Old 06-15-2012, 10:24 PM   #10
Moderator
 
Join Date: Feb 2012
Location: DFW
Posts: 782
Garage
Nimble, I'm glad that helped. However, engines are notoriously expensive for the boxster. There has been an Audi conversion and a Subaru conversion, but from what I hear it is extremely tedious and time-consuming. However, for the motorsport aficionado, engine swaps are very common for the dedicated. Based on what you have to say, I'd say an Audi V8 would be your best bet, as Audi and Porsche are practically sister companies. A guy did use an engine from an A8 but it looked messy with wires and two gear selector knobs in place!

You may have already seen it but here is the video in case you haven't:
Porsche Boxster V8 80% complete. - YouTube
Kenny Boxster is offline   Reply With Quote
Old 06-16-2012, 03:27 AM   #11
Registered User
 
Join Date: Nov 2010
Location: Australia- Brisbane
Posts: 47
What about a mazda rotary, RX8???
howe is offline   Reply With Quote
Old 04-10-2013, 03:40 AM   #12
Registered User
 
More's Avatar
 
Join Date: Sep 2012
Location: Sydney
Posts: 347
So does this actually work?

__________________
1998 Porsche Boxster 986 Convertible.
More is offline   Reply With Quote
Post Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 06:58 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page