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SimonBash
Trainee


Joined: 04 Aug 2019
Posts: 50



PostPosted: Thu Aug 08, 2019 6:56 am    Post subject: 3.8 engine rebuild - who and how far to go?! Reply with quote

Hi All,

Many thanks for all the advice so far on my other threads.

I’ve gone full circle and decided to buy the original S Cab (2006) that I had borescoped and was diagnosed with light scoring to 4&6.

The seller has been fantastic and we have agreed to reduced price that makes it viable for me to have the cylinders rebuilt.

Now I need to work out:

1. Which specialist to use
2. Do I do both 4-6 & 1-3
3. How many other items should I do while the engine is out - clutch, IMS etc

‘1’ is my immediate priority and I am thinking:
1. Hartech, or
2. Northway
3. Autofarm
4. RPM
5. Jaz Porsche
6. Portiacraft

I’m guessing most would recommend Hartech? Can also look at taking advantage of the option they offer to increase to a 3.9?

And experiences/insights are useful.

Thanks in advance!

Simon
 
  
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Robert SausageTrousers
Monza


Joined: 02 Apr 2018
Posts: 190



PostPosted: Thu Aug 08, 2019 8:40 am    Post subject: Reply with quote

You won't get anyone on here recommending anyone other than Hartech.

EDIT - also, i've not seen your other threads, but are you sure whoever did the borescope knows what they're looking at? it wouldn't be the first misdiagnosed - if so you could have just blagged a bargain.

Last edited by Robert SausageTrousers on Thu Aug 08, 2019 12:42 pm; edited 1 time in total
 
  
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tony_i
Newbie


Joined: 06 May 2017
Posts: 17



PostPosted: Thu Aug 08, 2019 8:43 am    Post subject: Reply with quote

I hope you got a hefty discount.

Speaking from bitter experience, I had my 997.1 done at Hartech. I'd recommend them. Before doing anything else they'll borescope the engine and confirm the diagnosis (or otherwise).

Personally, I'd get all 6 done. That way you have peace of mind and the chance of recouping more of the costs at resale.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16533
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Aug 08, 2019 9:43 am    Post subject: Reply with quote

There's engine rebuilds and there's Hartech rebuilds - DO NOT CONFUSE THE TWO. Totally different processes.

Hartech - No Substitute!!

Even Porsche have copied some of their designs.
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MJK1
Newbie


Joined: 03 Nov 2018
Posts: 14
Location: Church Broughton, Derbyshire


PostPosted: Thu Aug 08, 2019 10:00 am    Post subject: Reply with quote

Although I did the removal, strip, rebuild and install on my 05 3.8 myself, Hartech relined all 6 cylinders and advised which components to replace. Bank 2 cylinders were all scored while Bank 1 cylinders weren’t. However I’d advise relining all 6 cylinders, it just didn’t feel right to have worn (104000 miles) open deck lokasil cylinders on one side and new closed deck nikasil cylinders on the other. I also replaced all 6 pistons, IMS (later larger bearing design), big end and main bearing shells, all chains, tensioning plastics, low temp thermostat and all gaskets and seals. The total cost of this was £6k (plus many hours of my time).

I’d have no hesitation in recommending Hartech, they were helpful throughout the whole process and the car has been running great since I got it back on the road at the start of May.
 
  
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Kryton
Nürburgring


Joined: 05 Mar 2005
Posts: 392



PostPosted: Thu Aug 08, 2019 10:40 am    Post subject: Reply with quote

Hartech every time for me.. Thumb
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resigner
Suzuka


Joined: 19 Dec 2013
Posts: 1225



PostPosted: Thu Aug 08, 2019 10:44 am    Post subject: Reply with quote

Hartech, just for resale value. But there are other people who are just as good, they just don't shout about it quite so much.....
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16533
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Aug 08, 2019 10:58 am    Post subject: Reply with quote

Who's as good?
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Cannop
Trainee


Joined: 27 Feb 2018
Posts: 58
Location: Berks/Oxon border


PostPosted: Thu Aug 08, 2019 11:39 am    Post subject: Reply with quote

Alex wrote:
Who's as good?


You know, "other people"!
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Full fat Hartech'd C2S Manual
 
  
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99pFlake
Newbie


Joined: 24 Jun 2018
Posts: 48



PostPosted: Thu Aug 08, 2019 12:54 pm    Post subject: Reply with quote

Unless someone has actual statistics for subsequent engine longevity/performance it's always going to be a subjective opinion either way.
 
  
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SimonBash
Trainee


Joined: 04 Aug 2019
Posts: 50



PostPosted: Thu Aug 08, 2019 12:57 pm    Post subject: Reply with quote

Spoken to Tobias at Hartech and I am sold on their comprehensive rebuild of all 6 cylinders.

Great chat and feel very reassured.

Thanks all!
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16533
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Aug 08, 2019 12:58 pm    Post subject: Reply with quote

thumbsup Wise choice.
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T8
General
General


Joined: 29 Jun 2010
Posts: 15779
Location: Kent


PostPosted: Thu Aug 08, 2019 1:12 pm    Post subject: Reply with quote

If it's only got light scoring on 2 cylinders are you going to run it until it actually needs something doing. Question
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2007 Guards Red 997 Turbo Tiptronic
ex 2004 Polar Silver 996T Tiptronic
ex 2002 Seal Grey 996.2 C4 Tiptronic
ex 1978 Silver 924 Manual
 
  
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MJK1
Newbie


Joined: 03 Nov 2018
Posts: 14
Location: Church Broughton, Derbyshire


PostPosted: Thu Aug 08, 2019 2:13 pm    Post subject: Reply with quote

T8 wrote:
If it's only got light scoring on 2 cylinders are you going to run it until it actually needs something doing. Question


Why would you take the risk if you plan to run the car for a few years? It’s an extra £2k at this stage for 3 new closed deck nikasil cylinders and pistons. It’ll also make it a far easier sell when the time comes. I know I wouldn’t touch a car with only the one half done.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16533
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Aug 08, 2019 2:21 pm    Post subject: Reply with quote

Eh? T8 is suggesting to do nothing. He never mentioned only getting 1 bank done?

If its only lightly scored and not burning oil why spend £10k?

Personally I'd get Hartech to check all bores then follow their recommendations. And if they say leave it be, then leave it be.
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MJK1
Newbie


Joined: 03 Nov 2018
Posts: 14
Location: Church Broughton, Derbyshire


PostPosted: Thu Aug 08, 2019 2:26 pm    Post subject: Reply with quote

Ok sorry, I missed that, I thought the question was should he do both banks or just the one which was scored.
 
  
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FZP
Estoril


Joined: 18 Jan 2015
Posts: 3551
Location: Cheshire


PostPosted: Thu Aug 08, 2019 4:13 pm    Post subject: Reply with quote

As others have said Hartech all day and get it diagnosed by them also. As we have seen in the past, one man's borescore is another man's sweet as nut, drive it like.you stole it.
Fingers crossed it's a misdiagnosed score and you've got a hefty discount for nothing Thumb
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Robert SausageTrousers
Monza


Joined: 02 Apr 2018
Posts: 190



PostPosted: Thu Aug 08, 2019 8:16 pm    Post subject: Re: 3.8 engine rebuild - who and how far to go?! Reply with quote

SimonBash wrote:


And experiences/insights are useful.



My engine was fully rebuilt at 49k due to borescore at Jaz Porsche, it's now on 65k, is purring like a kitten, and doesn't use a drop of oil between changes (6k miles). Whether it's going to need a rebuild again sometime soon due to scoring because it didn't have the 'Hartech treatment' remains to be seen, but I drive it with full confidence and enjoy every single mile Smile

If it scores again, where would I take it? - Hartech of course, for a few reasons, but just giving my experience so far with a rebuilt engine from Jaz Porsche.
 
  
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tom_nieto
Monza


Joined: 08 Jan 2017
Posts: 244



PostPosted: Thu Aug 08, 2019 9:29 pm    Post subject: Reply with quote

T8 wrote:
If it's only got light scoring on 2 cylinders are you going to run it until it actually needs something doing. Question


Absolutely this. Drive the car for a bit and see what it's like. If it's ticking and drinking oil then you might want to expedite the repair. The worst that will happen in the meantime is worsening of the scoring. Be very happy that you've got enough cash off the purchase price to get a rebuild if it's needed.

If the engine is out anyway, I'd probably go for a full 6 cylinder re-line. Not sold on the merits of a 3.8 to 3.9 conversion. The extra money is probably better spent on petrol for driving the car or other modifications such as a sporty exhaust or intake manifold.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16533
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Aug 08, 2019 10:24 pm    Post subject: Reply with quote

It's actually 4.0 litre for the 3.8 conversion, not 3.9.

I know what I'd be doing for an extra few hundred sheets. Puts you into Gen II GTS power/performance.
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