Notices
928 Forum
Sponsored by:
Sponsored by: 928 Specialists

The GTS

 
Old 04-09-2019, 09:21 AM
  #61  
cobalt
Addict
Rennlist Member

 
cobalt's Avatar
 
Join Date: Oct 2003
Location: New Jersey
Posts: 17,258
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by siscogts View Post
ridicolous oil ingestion, AFAIK never completely fixed from porsche is the consequence of some project bugs/issues that Greg was mentioning. And oil dipstick showing the low level is only what can you see without opening the engine. I am rebuilding an engine from a 93 gts rogerbox, oil scrapers on pistons are next to be completely seized, piston pins lived without enough oil IMHO, rods have had better times, burnt oil clogged catalysts... Just cams are in healthy condition for a 90 k miles engine... I realized soon that my gts engine needs extensive cares, too.
So if I am not burning any oil between oil changes every 1500 to 2500 miles do I have to worry? I have put just under 20k miles on mine with 66k miles now everything sounds and runs fine as far as I can tell and dynos at factory numbers. It is a late 93. Oil dipstick always shows to be at adequate levels. Should I consider opening the engine?
cobalt is offline  
Old 04-09-2019, 03:15 PM
  #62  
Schocki
Addict
Rennlist Member
 
Schocki's Avatar
 
Join Date: Sep 2002
Location: Bucharest, Romania
Posts: 1,680
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by cobalt View Post
So if I am not burning any oil between oil changes every 1500 to 2500 miles do I have to worry? I have put just under 20k miles on mine with 66k miles now everything sounds and runs fine as far as I can tell and dynos at factory numbers. It is a late 93. Oil dipstick always shows to be at adequate levels. Should I consider opening the engine?
No! Why would you open a perfectly running engine that is not burning any oil under normal driving conditions? I was out of the country once for six months and my wife drove the car every day to work. Round trip of about 20 miles on the highway at moderate speeds of about 130 km/h (80 MPH). The oil low light never came on in six months and after six months, the dipstick still showed 3/4 full.
My 92 GTS is the same no oil consumption between oil changes and I don't change the oil every 3000 miles, which is a waste of limited resources IMPOV.
My GTS runs on GT cams, X-Pipe and has been sharktuned. It runs very strong and with the modified R&P to an US S4 2.2 spec., I can hit 143 MPH in 3rd gear all day long. Still no significant oil consumption.
Why would I open the motor?

BTW if you would have the chance to drive it on the Autobahn in Germany and constantly above 4000 RPM. It will consume oil. My 944 turbo, 944 S2 and now my GTS are no exception to this rule. There is a reason for the factory claim of up to 1.5 liters per 1000 km. It is possible even on a healthy engine!

Last edited by Schocki; 04-10-2019 at 02:40 AM.
Schocki is offline  
Old 04-09-2019, 03:20 PM
  #63  
SwayBar
Addict
Rennlist Member
 
SwayBar's Avatar
 
Join Date: Feb 2006
Location: Chicago Bears
Posts: 2,386
Received 1 Like on 1 Post
Default

Cobalt, you are golden, no need to open that engine up!
SwayBar is offline  
Old 04-09-2019, 03:24 PM
  #64  
Petza914
Addict
Rennlist Member
 
Petza914's Avatar
 
Join Date: Oct 2007
Location: Clemson, SC
Posts: 10,924
Received 14 Likes on 9 Posts
Default

Originally Posted by Schocki View Post
I can hit 243 MPH in 3rd gear all day long.
WOW, that is impressive. Must be a unicorn and the only GTS able to do this.
Petza914 is online now  
Old 04-09-2019, 09:29 PM
  #65  
cobalt
Addict
Rennlist Member

 
cobalt's Avatar
 
Join Date: Oct 2003
Location: New Jersey
Posts: 17,258
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Schocki View Post
No! Why would you open a perfectly running engine that is not burning any oil under normal driving conditions? I was out of the country once for six months and my wife drove the car every day to work. Round trip of about 20 miles on the highway at moderate speeds of about 130 km/h (80 MPH). The oil low light never came on in six months and after six months, the dipstick still showed 3/4 full.
My 92 GTS is the same no oil consumption between oil changes and I don't change the oil every 3000 miles, which is a waste of limited resources IMPOV.
My GTS runs on GT cams, X-Pipe and has been sharktuned. It runs very strong and with the modified R&P to an US S4 2.2 spec., I can hit 243 MPH in 3rd gear all day long. Still no significant oil consumption.
Why would I open the motor?

BTW if you would have the chance to drive it on the Autobahn in Germany and constantly above 4000 RPM. It will consume oil. My 944 turbo, 944 S2 and now my GTS are no exception to this rule. There is a reason for the factory claim of up to 1.5 liters per 1000 km. It is possible even on a healthy engine!
I'm assuming you meant to type 143 MPH?

Originally Posted by SwayBar View Post
Cobalt, you are golden, no need to open that engine up!
Believe you me I wasn't seriously considering it. There seems to be this dichotomy of opinions regarding the GTS engine. I know of several and I don't hear that many issues if well maintained they seem to be like any other nearly 30 year old car. I am a die hard air cooled 911 specifically 964 guy but the GTS is a special car and I feel privileged to own one.
cobalt is offline  
Old 04-09-2019, 10:06 PM
  #66  
ROG100
Addict
Rennlist Member


Rennlist
Site Sponsor

 
ROG100's Avatar
 
Join Date: Jan 2003
Location: Double Oak, TX
Posts: 15,715
Likes: 0
Received 2 Likes on 2 Posts
Default

My GTS has circa 170k miles and is a DD for me. Oil consumption, IIRC, was about a quart every 800 miles when I first bought it with circa 60k miles.
Once the car had covered 100k the consumption got better at about a quart every 1000 to 1200 miles (also depended how hard I was flogging it). I added a vacuum pump for the crank case and it further improved.
With 170K miles it is even better but I have not been recording the consumption lately - oil is cheap!!!!
My car has GT ++ S3 cams, lightweight lifters, X pipe plus 2.5" cat back exhaust and a larger diameter throttle body. Shark tuned with 24Lb injectors the car is great to drive.
My biggest concern is the oil ingestion and the build up of carbon on the pistons. Maybe not as bad as it used to be I still feel that I am losing power as any knocks (pinging) instigate retarded timing.
So I have a pair of late heads with 968 intake valves to go on. So Sean is soon to remove the engine and give it the full Monty.
I ordered the stronger connecting rods to replace the "weak"ones and we will be checking main and con rod bearings - to be changed if required.
Pistons will be drilled to end the carbon build up - hopefully.
__________________


Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014

928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
ROG100 is offline  
Old 04-10-2019, 02:43 AM
  #67  
Schocki
Addict
Rennlist Member
 
Schocki's Avatar
 
Join Date: Sep 2002
Location: Bucharest, Romania
Posts: 1,680
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes, I it's a mistake 143 MPH or exactly 231 km/h in 3rd gear selected in the automatic. I changed the number in my original post.
Schocki is offline  
Old 04-10-2019, 03:50 AM
  #68  
928cs
Super User
 
928cs's Avatar
 
Join Date: Aug 2003
Location: Le Mans, France
Posts: 2,418
Received 0 Likes on 0 Posts
Default

Originally Posted by Schocki View Post
Yes, I it's a mistake 143 MPH or exactly 231 km/h in 3rd gear selected in the automatic. I changed the number in my original post.
At 243 kn, this would have been a very low pass

928cs is offline  
Old 04-10-2019, 05:58 AM
  #69  
Schocki
Addict
Rennlist Member
 
Schocki's Avatar
 
Join Date: Sep 2002
Location: Bucharest, Romania
Posts: 1,680
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by 928cs View Post
At 243 kn, this would have been a very low pass

https://www.youtube.com/watch?v=JjSUj07s6jI
This is about maximum gear retraction speed . Very low passes in wing 67░ are well above 500 kts
Schocki is offline  
Old 04-10-2019, 08:18 AM
  #70  
siscogts
User
 
siscogts's Avatar
 
Join Date: Apr 2013
Location: North Italy
Posts: 878
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by cobalt View Post
So if I am not burning any oil between oil changes every 1500 to 2500 miles do I have to worry? I have put just under 20k miles on mine with 66k miles now everything sounds and runs fine as far as I can tell and dynos at factory numbers. It is a late 93. Oil dipstick always shows to be at adequate levels. Should I consider opening the engine?
What shocki said. If it is good as it is, no...
siscogts is offline  
 


Thread Tools
Search this Thread

Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: