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 09-13-2011, 02:51 PM   #1
Registered User
 
Join Date: May 2011
Location: weehawken nj
Posts: 240
About to do a 3.4 swap on 2000 2.7 boxster

Hey guys,
I recently had water damage on my 2.7 engine, so I am going to install a 3.4. Everything seems fairly straightforward, except that my car has throttle by wire and the 3.4 has a cable driven throttle.

What would be the easiest way around this? Im guessing the 2.7 intake manifold is a direct swap onto the 3.4, but id rather use the 3.4 intake. Can the 2.7 throttle assembly be installed onto the 3.4 intake manifold?

Bigsmoothlee is offline   Reply With Quote
Old 09-13-2011, 06:24 PM   #2
Porsche "Purist"
 
Paul's Avatar
 
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
Garage
From (a write up with pictures is at the end of this link):

http://www.pelicanparts.com/techarticles/Boxster_Tech/11-ENGINE-911_Engine_Swap/11-ENGINE-911_Engine_Swap.htm

These cars ran the Bosch Motronic 7.2 system, which uses an electronic throttle body, linked to an electronic gas pedal (also known as drive-by-wire). When installing an engine into one of these cars, you need to use an electronic throttle body and corresponding crossover tube that matches that engine. (I.E. use the electronic throttle body from a 2000 or later 996 Carrera when installing a 3.4 engine).
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.

Last edited by Paul; 09-13-2011 at 06:40 PM.
Paul is offline   Reply With Quote
Old 09-13-2011, 08:41 PM   #3
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
Be sure to post up some pics as you go. We'd all like to see the progress!
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
thstone is offline   Reply With Quote
Old 09-14-2011, 04:12 AM   #4
Registered User
 
Join Date: May 2011
Location: weehawken nj
Posts: 240
I cant post any pics yet, I should have enough posts soon though.

Does that mean I have to buy an electronic throttle for the 3.4? If so, does it bolt onto the manifold or do I need the crossover tube?
Bigsmoothlee is offline   Reply With Quote
Old 09-14-2011, 04:18 AM   #5
Registered User
 
JAAY's Avatar
 
Join Date: Dec 2006
Location: shoreham, ny
Posts: 1,619
I can help walk you through it.
__________________
996 3.4 engine with 2.7 986 5speed transmission
Ebay Headers, Fabspeed high flow cats, JIC Cross, IPD Plenum, H&R Coilovers, B&M Short Shifter, AEM Uego Gauge Type Analog, Apexi S-AFC Select, 987 air box, Litronics, 2000 Tails and side markers, painted center console, 18" 987 S-Wheels, GT3 Front bumper with splitter.
JAAY is offline   Reply With Quote
Old 09-14-2011, 03:39 PM   #6
Porsche "Purist"
 
Paul's Avatar
 
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
Garage
The Pelican link I posted has the complete procedure with pictures.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
Paul is offline   Reply With Quote
Old 09-15-2011, 03:54 AM   #7
Registered User
 
Join Date: May 2011
Location: weehawken nj
Posts: 240
I saw the link, lots of information, thanks.

But does anyone know if an egas throttle body for a 996 can be mounted onto an early cable driven 996 manifold? Or do I have to buy the entire egas intake manifold?
Bigsmoothlee is offline   Reply With Quote
Old 09-15-2011, 04:45 AM   #8
Registered User
 
JAAY's Avatar
 
Join Date: Dec 2006
Location: shoreham, ny
Posts: 1,619
You would want a full egas motor. But yes a egas throttle body just bolts on to the intake manifold. There's no difference.

__________________
996 3.4 engine with 2.7 986 5speed transmission
Ebay Headers, Fabspeed high flow cats, JIC Cross, IPD Plenum, H&R Coilovers, B&M Short Shifter, AEM Uego Gauge Type Analog, Apexi S-AFC Select, 987 air box, Litronics, 2000 Tails and side markers, painted center console, 18" 987 S-Wheels, GT3 Front bumper with splitter.
JAAY is offline   Reply With Quote
Post Reply



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 07:29 PM.


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