Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Oct 2003
Location: Parrothead, NC
Posts: 88
944 v 44 s2 engine

can someone point out the major differences between the 944 engine (8 valve) and the 944 s2 (16 valve engine)? I know the 2.5 - 2.7 - 3.0 difference and 16 valve - other major revisions? For reliability, which is the preferred motor?



current: Miata; still lookin' for that S2 Cab....


Last edited by Capndar; 11-20-2003 at 12:34 PM..
Old 11-20-2003, 10:06 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
For reliability? The 8 valve. Doesn't have the added expense of replacing two cams and two two thirds of the valves when either the t-belt or the chain tensioner fails.

Would be nice to take the compression up a bit.
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 11-20-2003, 11:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
ae1969's Avatar
 
Join Date: Jul 2001
Location: Edmonton, Alberta, Canada
Posts: 4,530
Send a message via ICQ to ae1969
S2 would be my choice. It will not self destruct as readily as the 944S (16V) and the power/torque you have more than makes up for the added costs of tensioner replacements........

To me it would be the best of all worlds...... unless you want crazy power then get a 951.
__________________
Alex - PCA Polar Region - Boxster Muncher
86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD
www.edmontonhomelife.com
www.edmontonrealestate.ws
Old 11-20-2003, 11:35 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Custom User Title
 
rammstein's Avatar
 
Join Date: Oct 2002
Location: Miami
Posts: 4,294
true- the 16V 3.0 liter is a damn sweet setup.
Old 11-20-2003, 11:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Moderator
 
Z-man's Avatar
 
Join Date: Feb 2001
Location: NJ, USA
Posts: 8,560
Garage
Like ae1969 said, the 944S2 16v engine isn't as suseptable to catostrphic failures that the 944S 16v engine is. For example, if the t-belt on an S2 motor goes, you may bend some valves, but you won't ruin the head, as you most likely would on a 944S motor (ref: 944S motor is a 2.5l 4cyl with a 16 valve head)

In terms of reliability, the 944S2 motor is just as reliable as the 944 8v n/a. This is assuming that these motors are all properly maintained. Speaknig of maintenance, in those terms, the 944S2 is a little more expensive to maintain than the 944 8v. It's maintenance costs are more on par with the costs associated with a 944 Turbo.

I have a 944S2 that I properly maintain. I have no second thoughts of driving my car hard on the track. It has never let me down. Well, there was that time my water pump failed at Watkins Glen, but that would have failed even if I were driving a 944 8v na. So speaking from experience, the 944S2 motor is a very robust powerplant capable of taknig alot of hard driving.

The 944S2 also have more than 50 more ponies under the hood and a broader torque curve. On some tracks, I've been known to pull away from turbos following me in the corners (only to be overtaken on the straights! ) Due to their wonderful low end torque, they also make great autocrossing cars. While I don't have the push-in-into-the-seat acceleration of a 951, there's globs of torque to be found all throughout the rev range. Think of it as a more refined delivery of acceleration.

Ok, sorry for rambling: I think I'll wash my car tonight!!!
-Zoltan.
__________________
1989 944S2 - June, 2001 - January, 2014

Visit my homepage!
<><
Old 11-20-2003, 11:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Aug 2000
Location: Corpus Christi, TX
Posts: 321
Reliability? I would think that there is no difference. The cam belt sent up is essentialy the same. If you don't adjust and change it, it will break and cause the same damage in either car.

The S has the additional cam. But I'd say that the chain and chain tensioner are 10X as reliable as the cam belt & cam belt tensioner.

When it breaks on an S. yes it does cost more to fix. But the probability of it breaking are the same for all.
__________________
1987 944S, needs crank work
1992 Jeep Sahara YJ 4.0
2001 Harley FXST
1981 VW Rabbit diesel
1984 Isuzu P'up diesel
Old 11-20-2003, 12:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
Join Date: Oct 2003
Location: Parrothead, NC
Posts: 88
thanks...that is the information I was looking for...

__________________
memories
'70 914
'80 GTI
'94 Miata
'84 944
'96 328iC

now 2001 Miata LS - also looking for 944 cabrio
Old 11-20-2003, 12:34 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 07:43 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.