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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17138
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Jan 17, 2019 11:42 pm    Post subject: Engine condition on high mileage cars Reply with quote

I've just got my car back from my mechanic having various niggles sorted including a new variocam solenoid on bank 1. I specifically gave him a list of things I wanted sorting and checking whilst in there. Most importantly chain guide parts and cam condition/timing. Car's on 132k miles, doesn't use any oil (maybe 300ml over 12k, usually on a blast down to the French Riviera and back non stop) and filter always clean when serviced.

He reported back that the cams were like new, minimal wear on the guides/slipper, and cam timing was spot on (only checked bank 1).

As far as I'm aware, the engine has never had any work done on it (apart from me removing the outer seal on the IMS bearing, which was also like new).

I know there's other 3.4 996 engines that are in a needy rebuild before 100k, with the main culprit being the crank bearings.

So what's the script here? Are some cars ragged when cold, or poorly manufactured, or not serviced (oil) accordingly? Am I just lucky? Has mine had a rebuild I don't know about?

Something doesn't stack up. Dont know

I'm in a position where I could afford a rebuild if need be and love my car that much it'd be straight over to Hartech for the works, but I'm a firm believer of 'if it ain't broke....'

Do I just keep on having fun in it?
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FZP
Estoril


Joined: 18 Jan 2015
Posts: 3873
Location: Cheshire


PostPosted: Thu Jan 17, 2019 11:55 pm    Post subject: Reply with quote

Drive like you stole it until you broke it. Thumb
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Chris_in_the_UK
Estoril


Joined: 19 Mar 2014
Posts: 3588
Location: Harrogate


PostPosted: Thu Jan 17, 2019 11:57 pm    Post subject: Reply with quote

Keep enjoying pal, seriously.

I have always been of the opinion that a full book of service stamps is no guarantee of anything, particularly with Porsche's. Folks hold this in high esteem, but the back story is how they are driven (proper warm up etc.).

The period where long service intervals were prevalent has also taken it's toll - a mate has a DAF Tractor Unit that has 500,000 miles on the clock - his simple view is he changes the oil and filters every month.

More is less? Rocker
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17138
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Jan 18, 2019 12:01 am    Post subject: Reply with quote

FZP wrote:
Drive like you stole it until you broke it. Thumb


I've tried that for nearly 5 years and the best I could do was mash my diff!




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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17138
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Jan 18, 2019 12:02 am    Post subject: Reply with quote

Chris_in_the_UK wrote:
Keep enjoying pal, seriously.

I have always been of the opinion that a full book of service stamps is no guarantee of anything, particularly with Porsche's. Folks hold this in high esteem, but the back story is how they are driven (proper warm up etc.).

The period where long service intervals were prevalent has also taken it's toll - a mate has a DAF Tractor Unit that has 500,000 miles on the clock - his simple view is he changes the oil and filters every month.

More is less? Rocker


Wise words Sir. Thumb
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Guywilko
Trainee


Joined: 04 Jul 2017
Posts: 57



PostPosted: Fri Jan 18, 2019 6:39 am    Post subject: Reply with quote

Similar position here Alex.

105000 miles engine has never been opened. Oil analysis is clear and it starts, runs and drives superbly, revs stable on idle, Ive done leaky plug tubes, minor RMS leak remains

I wonder whether worn engines are a combination of poor drivers causing over Revs especially in low gears down hills, poor manufacturing tolerances on some engines, the few percent of IMS that reveal before 70k, incorrect oil specs, track use when oil lowish??

I bought the car on the basis of popopbangbangs ownership thread. Exact same (base) spec as his car. All i can do is thrash it and love the fact that I'm in a millenium spec supercar for audi money.

Guy
 
  
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steve1
Spa-Francorchamps


Joined: 08 Feb 2009
Posts: 345


2002 Porsche 996 Carrera 2

PostPosted: Fri Jan 18, 2019 7:02 am    Post subject: Reply with quote

Same here Alex just passed 125,000 miles uses no oil no rattles or noisy start up.
Just had all the wheel arch liners and trim off sprayed with dintrol no sign of any rust ether.
luck of the draw i guess.


Steve.
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17138
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Jan 18, 2019 7:06 am    Post subject: Reply with quote

They must have put more effort into making cabs Grin
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kas750
Shanghai


Joined: 31 Mar 2013
Posts: 4590
Location: Chorley lancashire

2006 Porsche 911

PostPosted: Fri Jan 18, 2019 7:11 am    Post subject: Reply with quote

94,000 miles on mine.It doesn't use any oil,its mechanically very quiet and doesn't even rattle on cold start even after being left for weeks on end. Dont know
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17138
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Jan 18, 2019 7:13 am    Post subject: Reply with quote

I wish there was a simple easy way of checking the crank bearings.
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kas750
Shanghai


Joined: 31 Mar 2013
Posts: 4590
Location: Chorley lancashire

2006 Porsche 911

PostPosted: Fri Jan 18, 2019 7:37 am    Post subject: Reply with quote

alex yates wrote:
I wish there was a simple easy way of checking the crank bearings.



You can if you fit an external oil pressure gauge.
 
  
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911munKy
Montreal


Joined: 26 Nov 2014
Posts: 565



PostPosted: Fri Jan 18, 2019 8:34 am    Post subject: Reply with quote

Or get your oil sample diagnosed when you change the oil (every 6000m for me), I believe that an increase in the amount of Copper over time would indicate a probably increase in journal wear and time to consider an engine rebuild.
I think I’ve got that right (?) as it’s why I get mine done every oil change as well as giving an indication of overall engine health along with oil consumption.
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Last edited by 911munKy on Fri Jan 18, 2019 3:56 pm; edited 1 time in total
 
  
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steve1
Spa-Francorchamps


Joined: 08 Feb 2009
Posts: 345


2002 Porsche 996 Carrera 2

PostPosted: Fri Jan 18, 2019 9:04 am    Post subject: Reply with quote

We better stop these happy thoughts or the 996 might get a good name🤘
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7315
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Fri Jan 18, 2019 9:09 am    Post subject: Reply with quote

steve1 wrote:
We better stop these happy thoughts or the 996 might get a good name🤘


Don't worry, the usual suspects will be along soon to remind us we're all doomed.

Anyway, as above, my understanding is that oil analysis is a reasonable guide to bearing wear etc. Cheap enough to give it a whirl...?
http://www.millersoils.co.uk/services/oil-analysis
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"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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kas750
Shanghai


Joined: 31 Mar 2013
Posts: 4590
Location: Chorley lancashire

2006 Porsche 911

PostPosted: Fri Jan 18, 2019 9:42 am    Post subject: Reply with quote

If as an extreme example you changed your oil every 2 thousand miles then oil analysis probably wouldn’t pick up any anomalies
 
  
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Stotty
Monza


Joined: 17 Dec 2009
Posts: 164
Location: Surrey


PostPosted: Fri Jan 18, 2019 9:46 am    Post subject: Reply with quote

170k+ on mine now, with no engine work... I just drive it and fix things when they break.
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2000 996, C2, manual, arctic/metropole, Koni shocks, H&R -30 springs, H&R ARB's, Rennline SS engine mounts, cup wheel, 170k miles. 2018 Touareg RLine Plus
 
  
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wasz
Sepang


Joined: 28 Dec 2012
Posts: 2998


1999 Porsche 996 Carrera 2

PostPosted: Fri Jan 18, 2019 10:40 am    Post subject: Reply with quote

I'm going to just drive mine and fix it when/if it stops.

If there are no decent cranks left in the world then I will shed a tear and then break it for spares. Or put a different engine in.

In the mean time I do oil analysis and keep a keen eye on oil pressure.
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My special order MY99 Vesuvious Charcoal 996 | Clutch, Fly RMS IMS AOS Job |
Steering Rack Hard Lines | Air Con Compressor / System
 
  
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Counter Of Beans
Spa-Francorchamps


Joined: 10 May 2018
Posts: 371
Location: Hampshire


PostPosted: Fri Jan 18, 2019 10:48 am    Post subject: Reply with quote

It's funny, we used to get threads like this on the Range Rover forum when I had one of those cars. Someone would say "my car has done 20 billion miles and never missed a beat......." which would then be countered by "my three month old FFRR has had five new engines..." or something.

In other words, there's so many variables in play [factory assembly defects, quality of servicing, mechanical sympathy for example] that you may not get a consensus about engine reliability.

GMG, what say you? Hartech's opinion?

That said, it's always nice to hear of the high mileage "good news" stories, happy motoring chaps. Thumb
 
  
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alfazagato
Trainee


Joined: 03 Jul 2017
Posts: 82



PostPosted: Fri Jan 18, 2019 10:52 am    Post subject: Reply with quote

Alex I think that you have put your finger on a possible source of the engine problems and that is not properly warming the engine before driving. My son who has a current 911 gets in and drives off as if the hounds of hell are at his heels. The concept of warming up never enters his head, or to be fair, any of his friends.
 
  
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eabeukes
Monza


Joined: 30 Jan 2018
Posts: 181
Location: Aylesbury

1999 Porsche 996 Carrera 2

PostPosted: Fri Jan 18, 2019 11:05 am    Post subject: Reply with quote

alfazagato wrote:
Alex I think that you have put your finger on a possible source of the engine problems and that is not properly warming the engine before driving. My son who has a current 911 gets in and drives off as if the hounds of hell are at his heels. The concept of warming up never enters his head, or to be fair, any of his friends.


In a 'modern' car, theres debate over whether doing this actually causes more harm than good. I know I've heard similar debate aout the 996/7's too - do you start up and leave it 15 minutes till its at 80deg before even lifting the handbrake, or do you get in and drive gently to ensure the oil fills all the engine and only start hooning at 80deg?
 
  
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