Notices
944 Turbo and Turbo-S Forum 1982-1991
Sponsored by:
Sponsored by: Clore Automotive

944 engine weaknesses

Thread Tools
 
Search this Thread
 
Old 11-04-2009, 03:28 AM
  #106  
Whisper
Burning Brakes
 
Whisper's Avatar
 
Join Date: Jun 2008
Location: Riverside CA
Posts: 1,043
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by 944J
i think i read that and of course i want one... but it would also be cool if by just fillingin the deck spacing around the cylinders with a plate and concrete type filler would make the engine be able to handle the super high boost that the audi can handle...
Remind me not to stand near you.

You know how a pipe bomb works, right?

Well, when you're trying to contain pressure, you don't just need to shore up the weakest link, you need to shore up every link that isn't strong enough. Otherwise, what you have (very briefly) is an external combustion engine.
Whisper is offline  
Old 11-04-2009, 05:26 AM
  #107  
gt37vgt
Drifting
 
gt37vgt's Avatar
 
Join Date: May 2006
Location: Melbourne
Posts: 3,481
Likes: 0
Received 0 Likes on 0 Posts
Default

I know i came in late and i and repeating other guys but i say every thing about the block is bad. the bottom end internals are good the 8'v flows good for a 2v head the 16v flows heaps .
the 8v valve chain is a bit clunky . oiling is a big issue beyond 7000 rpm from most accounts
944 engines are a good thing up to 400whp beyond that many other things make sense .
but a 944 with more than 400whp needs heaps of chasis work
gt37vgt is offline  
Old 11-04-2009, 06:18 AM
  #108  
alxdgr8
Rennlist Member
 
alxdgr8's Avatar
 
Join Date: Sep 2006
Location: Seattle, WA
Posts: 3,803
Received 53 Likes on 35 Posts
Default

944J:
You need to listen more and do more searching/reading.
You also need to do some research on these "cheap" 700whp motors that you seem to be dreaming up.
alxdgr8 is offline  
Old 11-04-2009, 08:10 AM
  #109  
Chris White
Addict
Rennlist Member

Rennlist Small
Business Sponsor

 
Chris White's Avatar
 
Join Date: Jul 2001
Location: Marietta, NY
Posts: 7,505
Likes: 0
Received 35 Likes on 26 Posts
Default

Originally Posted by 944J
this contradicts what you are saying...

http://www.80tq.com/EngineDamage.html
Hmmm....so a web site showing an 300 wheel hp Audi engine that was completely destroyed at a track event proves me wrong....
Chris White is offline  
Old 11-04-2009, 08:18 AM
  #110  
Euro951
Racer
 
Euro951's Avatar
 
Join Date: Aug 2008
Location: Woodbury NJ
Posts: 342
Likes: 0
Received 1 Like on 1 Post
Default

I think you also should ride in someones 500-600hp car. I have ridden in a late model corvette with a stroked 427 cubic inch LS series engine. Even with very large tires the car has severe traction issues. You should re anaylze your HP goals. If you want a dyno queen go buy and modify an old Integra or a Supra, make 1000hp and try not to get killed when it brakes traction at well over 100mph.....

Go drive in a bonafide high HP ride and I think you will re=evaluate your goals.
Euro951 is offline  
Old 11-04-2009, 08:20 AM
  #111  
Papamurphdog
Rennlist Member
 
Papamurphdog's Avatar
 
Join Date: Dec 2007
Location: Atlanta
Posts: 801
Received 110 Likes on 60 Posts
Default

Originally Posted by gt37vgt
I know i came in late and i and repeating other guys but i say every thing about the block is bad. the bottom end internals are good the 8'v flows good for a 2v head the 16v flows heaps .
the 8v valve chain is a bit clunky . oiling is a big issue beyond 7000 rpm from most accounts
944 engines are a good thing up to 400whp beyond that many other things make sense .
but a 944 with more than 400whp needs heaps of chasis work
+1 on that. Plenty of fun. Past that, too many nit pick problems and other issues. If you want 700 hp drop in a Vette motor; its easier and more reliable. Plus you get the sweet 944 chassis to drive.
Papamurphdog is offline  
Old 11-04-2009, 09:31 AM
  #112  
DanaT
Three Wheelin'
 
DanaT's Avatar
 
Join Date: Jan 2002
Posts: 1,258
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by odurandina
From the "Cool Chevy Ls1 video" thread, I wrote about the money numbers for LSx conversions:


.... I am hardly an expert... but I wish to take part in the conversation to help get to the bottom of this.



I spent around $1,700.00 for new big blacks, rotors, pads, adaptors and bias valve and getting it all installed.


Here is an easier solution and probably cheaper too.

Buy this LS1

http://www.autotrader.com/fyc/vdp.js...standard=false

It comes with everything you need to make it run. You get an LS1 and even a transmission that will hold up. Oh, yes, and they are even throwing in 4 free tires and wheels. Don't forget the corvette that comes with it....

-Dana
DanaT is offline  
Old 11-04-2009, 12:48 PM
  #113  
George D
Drifting
 
George D's Avatar
 
Join Date: Aug 2006
Location: Tucson and Greer Arizona
Posts: 2,659
Likes: 0
Received 0 Likes on 0 Posts
Default

Exactly. If you want a V8 with a real trans, buy the Vette. Modify it, and have fun. ZR1 coupes are in the mid 20's now. Plenty of mods available, and you will have something to sell.

I saw that Tony's 958 is up for sale for close to 40K. I don't know why he is selling his car, but he seems to like to build cars, sell them, and enjoy the aggravation all over again.

I thought this post was about the weakness of the 4 banger 951 engines?

George

Originally Posted by DanaT
Here is an easier solution and probably cheaper too.

Buy this LS1

http://www.autotrader.com/fyc/vdp.js...standard=false

It comes with everything you need to make it run. You get an LS1 and even a transmission that will hold up. Oh, yes, and they are even throwing in 4 free tires and wheels. Don't forget the corvette that comes with it....

-Dana
George D is offline  
Old 11-04-2009, 12:55 PM
  #114  
V2Rocket
Rainman
Rennlist Member
 
V2Rocket's Avatar
 
Join Date: Jan 2007
Location: Nashville, TN
Posts: 45,498
Received 633 Likes on 490 Posts
Default

Originally Posted by blown 944
So far so good on this engine. It has great sealing (good leakdown). It's funny you ask as I just drained my catch and the only thing coming out is ethanol. I better knock on wood.
LOL
mega boost
V2Rocket is offline  
Old 11-04-2009, 03:54 PM
  #115  
Fishey
Nordschleife Master
 
Fishey's Avatar
 
Join Date: Feb 2003
Location: Lebanon, OH
Posts: 5,801
Likes: 0
Received 3 Likes on 2 Posts
Default

Originally Posted by DanaT
Here is an easier solution and probably cheaper too.

Buy this LS1

http://www.autotrader.com/fyc/vdp.js...standard=false

It comes with everything you need to make it run. You get an LS1 and even a transmission that will hold up. Oh, yes, and they are even throwing in 4 free tires and wheels. Don't forget the corvette that comes with it....

-Dana
The transmissions are alright I guess there deffinatly not bulletproof though..

Also, if you already have a 944 thats been built up except for the engine it seems like an easy choice to me. LS1 motors can be had for very cheap.
Fishey is offline  
Old 11-04-2009, 03:57 PM
  #116  
944J
Banned
Thread Starter
 
944J's Avatar
 
Join Date: Dec 2002
Posts: 2,379
Likes: 0
Received 0 Likes on 0 Posts
Default

so when the 944/951 engine fails where does it break and why? post pics if you have them...
944J is offline  
Old 11-04-2009, 04:00 PM
  #117  
Fishey
Nordschleife Master
 
Fishey's Avatar
 
Join Date: Feb 2003
Location: Lebanon, OH
Posts: 5,801
Likes: 0
Received 3 Likes on 2 Posts
Default

Originally Posted by 944J
so when the 944/951 engine fails where does it break and why? post pics if you have them...
Depends on the motor and moddifications...

That is way to broad of a question.

#2 Rod Bearings (More common on mid year 2.5L)
Rod Failure
Piston Slap failure/Block damage (usually from piston slap) S2
Headstuds (more common on 3.0L blocks)
Headgaskets are more common on 2.5L engines
etc.. etc...

There is to many varibles because there is so much difference between different years and styles.
Fishey is offline  
Old 11-04-2009, 04:12 PM
  #118  
944J
Banned
Thread Starter
 
944J's Avatar
 
Join Date: Dec 2002
Posts: 2,379
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Fishey
Depends on the motor and moddifications...

That is way to broad of a question.

#2 Rod Bearings (More common on mid year 2.5L)
Rod Failure
Piston Slap failure/Block damage (usually from piston slap) S2
Headstuds (more common on 3.0L blocks)
Headgaskets are more common on 2.5L engines
etc.. etc...

There is to many varibles because there is so much difference between different years and styles.
make a list of them all with the exact type of engine noted then you can start to make progress
944J is offline  
Old 11-04-2009, 04:13 PM
  #119  
944J
Banned
Thread Starter
 
944J's Avatar
 
Join Date: Dec 2002
Posts: 2,379
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Chris White
Hmmm....so a web site showing an 300 wheel hp Audi engine that was completely destroyed at a track event proves me wrong....
read the whole page before you respond
944J is offline  
Old 11-04-2009, 04:14 PM
  #120  
944J
Banned
Thread Starter
 
944J's Avatar
 
Join Date: Dec 2002
Posts: 2,379
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by alxdgr8
944J:
You need to listen more and do more searching/reading.
You also need to do some research on these "cheap" 700whp motors that you seem to be dreaming up.
you need to type less and know more, then you could contribute to the post and be useful
944J is offline  


Quick Reply: 944 engine weaknesses



All times are GMT -3. The time now is 09:48 AM.