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

Reply
 
LinkBack Thread Tools Display Modes
Old 09-17-2013, 12:47 PM   #1
Registered User
 
jb92563's Avatar
 
Join Date: Apr 2012
Location: Riverside, CA
Posts: 1,663
3179cc engine vs HP

I was looking at some model info and saw that:

The 2000-2002 986 S engine of 3.179L displacement makes 250 HP,

The 2005-2006 987 S engine of 3.179L displacement makes 280 HP!

Presumably its the same core engine so how did they get the extra 30HP from it
if the displacement is the same?

Perhaps its also an opportunity for those with the older 3.179 engines to upgrade the performance with stock parts?
__________________
"It broke because it wants to be Upgraded "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
jb92563 is offline   Reply With Quote
Old 09-17-2013, 01:23 PM   #2
Registered User
 
The Radium King's Avatar
 
Join Date: Apr 2010
Location: Canada
Posts: 2,874
variocam+

otherwise, the same things we do - intake, exhaust, tuning. 987 exhaust will fit on a 986. you can put a 9x7 intake (airbox, throttle body, plenum) on a 986.

Last edited by The Radium King; 09-17-2013 at 02:05 PM. Reason: forgot about the airbox!
The Radium King is offline   Reply With Quote
Old 09-17-2013, 01:59 PM   #3
Registered User
 
BYprodriver's Avatar
 
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,172
Garage
2002 S = 250hp VarioCam

2003 S = 258hp VarioCam+ & freer flowing exhaust & freer flowing side intake duct

2004 S Sp.Ed.=264hp 987 airbox,MAF tube & DME tweek & Sport exhaust bypass

2005 987 = 280hp DME tweek & greatly improved exhaust system


incremental weight gain each year
BYprodriver is offline   Reply With Quote
Old 09-17-2013, 02:20 PM   #4
Engine Surgeon
 
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,424
The Boxster did not see vario cam + till 2007.
The changes are mostly cylinder head, intake and ECU changes in the 05 engines.
Port flow changed and the port margins intake/ exhaust are altered with the M97 cylinder head profiles.
__________________
Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
Jake Raby is offline   Reply With Quote
Old 09-17-2013, 02:49 PM   #5
Registered User
 
The Radium King's Avatar
 
Join Date: Apr 2010
Location: Canada
Posts: 2,874
I stand corrected!
The Radium King is offline   Reply With Quote
Old 09-17-2013, 03:49 PM   #6
Registered User
 
jsceash's Avatar
 
Join Date: Aug 2009
Posts: 1,393
Garage
The cam timing advance is different in the 2002 and earlier and the 2003 +. The cam timing on 2002 and earlier is electro mechanical and shift the chain to change the timing between the intake and exhaust cams. There are five chain in these models. The 2003 + has a valve ported to a hydraulic clutch on the exhaust cam drive sprocket that shifts the cam position in relation to the chain and works off the engine oil pressure. These engine have only three chains
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
jsceash is offline   Reply With Quote
Old 09-18-2013, 09:02 PM   #7
Registered User
 
jb92563's Avatar
 
Join Date: Apr 2012
Location: Riverside, CA
Posts: 1,663
Thats explains why so many folks are trying to free up exhaust and intake, I guess theres a bit of hp to be had there.

I suppose having the heads tuned is the next stage up.

Thanks for taking the time to explain, its appreciated.
__________________
"It broke because it wants to be Upgraded "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
jb92563 is offline   Reply With Quote
Old 09-19-2013, 07:54 PM   #8
Registered User
 
Trey T's Avatar
 
Join Date: Dec 2009
Location: Texas
Posts: 244
Because
Trey T is offline   Reply With Quote
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 04:01 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page