Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

I think my motor just blew a head gasket.

Thread Tools
 
Search this Thread
 
Old 05-06-2004, 05:23 PM
  #1  
Drewster67
Nordschleife Master
Thread Starter
 
Drewster67's Avatar
 
Join Date: Sep 2002
Location: Gilbert, AZ
Posts: 5,848
Likes: 0
Received 1 Like on 1 Post
Angry I think my motor just blew a head gasket.

My 84 Shark.

Coming home this afternoon, my oil pressure dropped and she started overheating to severe dentonation. Both oil and water were in the intake "valley" - literally BOILING.

When I checked the dipstick, it appeared to have water in the oil. Fortunately I was close to home so I was able to limp her in. My question -Is it common to loose oil pressure when the headgasket fails?. Or am I possibly looking at more sever problems?.

For right now she is in the garage and cooling down,

TIA
Old 05-06-2004, 05:28 PM
  #2  
AO
Supercharged
Rennlist Member
 
AO's Avatar
 
Join Date: May 2002
Location: Back in Michigan - Full time!
Posts: 18,925
Likes: 0
Received 60 Likes on 34 Posts
Default

My condolences. I can't answer your question, but I can sympathize.
Old 05-06-2004, 05:30 PM
  #3  
hacker-pschorr
Administrator - "Tyson"
Lifetime Rennlist
Member
 
hacker-pschorr's Avatar
 
Join Date: Aug 2001
Location: Up Nort
Posts: 1,589
Received 2,204 Likes on 1,243 Posts
Default

Where is that thread that someone was asking why get a Cometic head gasket?

Here yea go!
Old 05-06-2004, 05:44 PM
  #4  
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Jim bailey - 928 International's Avatar
 
Join Date: Jul 2001
Location: Anaheim California
Posts: 11,542
Likes: 0
Received 3 Likes on 3 Posts
Default

The engine was grossly overheated and the oil pressure would have been low due to being too HOT and thin . The detonation was a result of that extreme heat ......"Fortunately I was close to home so I was able to limp her in. " By continuing to drive it you may well have damaged the tension of the piston rings and the motor is TOAST . More damage is done by people trying to limp it home . off the freeway , to the shop . When your car tells you it has problems ...........LISTEN . So you saved the cost and inconvenience of a tow and "limped it home" ......shame on you !
Old 05-06-2004, 05:54 PM
  #5  
Drewster67
Nordschleife Master
Thread Starter
 
Drewster67's Avatar
 
Join Date: Sep 2002
Location: Gilbert, AZ
Posts: 5,848
Likes: 0
Received 1 Like on 1 Post
Default

There is always a difference between knowing what I should do and what I am able to do.
Old 05-06-2004, 06:02 PM
  #6  
Gretch
Range Master
Pepsie Lite
Lifetime Rennlist
Member
 
Gretch's Avatar
 
Join Date: Apr 2002
Posts: 54,291
Received 1,235 Likes on 755 Posts
Default

Choices have consequences.......sometimes you don't have any good choices. I hope that was the case as it will save a lot of self recrimination later. I hope your car survived the experience. Keep us posted......
Old 05-06-2004, 06:15 PM
  #7  
Scott M.
Rest in Peace
Rennlist Member
 
Scott M.'s Avatar
 
Join Date: Apr 2003
Location: Penn State
Posts: 2,240
Likes: 0
Received 0 Likes on 0 Posts
Default

Drew;

Same situation, 79 928 Cab. But I was stuck in the middle of EBF Utah w/ no exit for 60 miles. I limped, stopped, limped...etc numerous times. Pulled into Midvale w/ no oil pressure. At that point it was "F-it, I aint walkin'.
Luckily for me, I did a po' man rebuild (all gasket, rod bearings, NO rings or main bearings) and the motor survived perfectly. Great compression and vitrually no discernable leakdown. All that at 130k miles.
Assess the damage, do what the signs tell you.
Optimism, optimism.

Scott
Old 05-06-2004, 06:28 PM
  #8  
GlenL
Nordschleife Master
 
GlenL's Avatar
 
Join Date: Jul 2003
Location: Minneapolis, Minnesota
Posts: 7,654
Received 29 Likes on 23 Posts
Default

Sounds like it could be the oil cooler in the radiator. Got one of those?
Old 05-06-2004, 06:58 PM
  #9  
Drewster67
Nordschleife Master
Thread Starter
 
Drewster67's Avatar
 
Join Date: Sep 2002
Location: Gilbert, AZ
Posts: 5,848
Likes: 0
Received 1 Like on 1 Post
Default

Glen, Yep - I do. I just drained the radiator fluid and there's no oil in it.

I totally knew I was taking a chance with severe damage by driving it home, but as Gretch stated - sometimes you just dont have good choices. The good thing was the drive was only 2 miles.

I've already called the shop (Exotic Motorwerks) to schedule a drop off. Nothing to do now but have a beer.


Thanks everyone -
Old 05-06-2004, 07:08 PM
  #10  
Red UFO
Nordschleife Master
 
Red UFO's Avatar
 
Join Date: Jul 2003
Posts: 9,613
Likes: 0
Received 0 Likes on 0 Posts
Default

Dude,

That freakin' sucks!
Its pretty hot today around 100 so nobody wants to sit in a smoke shark in the desert. Let me know if you need any help!

Poor shark.
Old 05-06-2004, 07:41 PM
  #11  
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Jim bailey - 928 International's Avatar
 
Join Date: Jul 2001
Location: Anaheim California
Posts: 11,542
Likes: 0
Received 3 Likes on 3 Posts
Default

Drew sounds more like you just lost the hose from the pass side head to heater valve and steam cleaned the valley in the V of the engine which would explain the oil . Two miles or so is not long or far so the engine may be fine .
Old 05-06-2004, 08:10 PM
  #12  
Old & New
Rennlist Member
 
Old & New's Avatar
 
Join Date: Dec 2002
Location: Southern New England
Posts: 1,975
Likes: 0
Received 0 Likes on 0 Posts
Default

But water in the oil doesn't sound too optimistic.
Old 05-06-2004, 11:26 PM
  #13  
SharkSkin
Rennlist Member
 
SharkSkin's Avatar
 
Join Date: Jan 2004
Location: Boulder Creek, CA
Posts: 12,620
Likes: 0
Received 6 Likes on 6 Posts
Default

Originally posted by Old & New
But water in the oil doesn't sound too optimistic.
Couldn't that get in through an iffy breather gasket, especially with live steam roiling around in there? In any case, sounds like it's time for a very thorough inspection, starting with at least an oil change and compression test before trying to run it.
Old 05-07-2004, 12:06 AM
  #14  
Drewster67
Nordschleife Master
Thread Starter
 
Drewster67's Avatar
 
Join Date: Sep 2002
Location: Gilbert, AZ
Posts: 5,848
Likes: 0
Received 1 Like on 1 Post
Default

The Oil and rad. fluid are being changed out tomorrow - first thing. Luckily, there was no water in the oil. Previously when I checked the oil, it was too hot, so I jumped the gun a little bit thinking it was water.

BTW - The oil is spent! BIG TIME.



Quick Reply: I think my motor just blew a head gasket.



All times are GMT -3. The time now is 04:12 PM.