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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Sat Aug 10, 2019 11:46 am    Post subject: Another 3.4l crankshaft coin toss Reply with quote

I have a 3.4l engine which had damaged heads and crankshaft. I sourced the heads ages ago but have been struggling to find a crank. I bought a complete Boxster s 3.2l engine which I had heard running for the crank, but then decided to get that converted to a 3.7l engine so I still need one. As anybody who needs a 3.4l crank will know they are rare and expensive, so when a Boxster S engine came up for sale as 'parts only' I was interested. Symptoms were water and oil mixing, the garage tried a new oil/water heat exchanger but the fault remained so at this point the owner gave up and sold the car for parts. This only happened very recently so my finger are crossed that it is mainly oil in water and not a lot of water in oil. It turns over no problem and from the look of the oil on the engine it looks very promising. Almost certainly a cracked head, but for £600 I'm taking a risk and hopefully I'll jave a good crank, IMS, full set of camshafts and a 4-6 cylinder head.








I'm off on holiday on Tuesday but really want the crank out before then, so I have a busy couple of days ahead of me. I'll report back with progress updates...

MC
 
  
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Sun Aug 11, 2019 10:44 pm    Post subject: Reply with quote

I was out last night in Manchester for a couple of shandies so it was a slower start today. After a two hour drive to Nottingham I set about clearing out the garage to make some space. I had to take my C4 engine off the stand to get the new engine on. Getting the engine out of the back of the Range Rover by myself was something of a challenge.













I then set about taking it apart. I did a little video of it.....


Open Youtube Page


Crankshaft and bearing look great. Big crack on cylinder 2 was the cause of the problem.






















Then with it all apart, get the C4 engine back on the stand...



I doubt that it would be worth getting the head repaired since second hand ones aren't all that expensive. There is also a damaged mounting where the bellhousing bolts to the engine, so one scrap head, one scrap block half, and a pile of decent bits. Most importantly, I now have a crankshaft for my 3.4l engine Very Happy

MC
 
  
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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: Mon Aug 12, 2019 6:39 am    Post subject: Reply with quote

It's about time your username was changed to ManMachine!


A few shandies Floor
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2000 Manual 996 C4 Arctic Silver Convertible


 
  
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yo_clarkie
Spa-Francorchamps


Joined: 14 Feb 2012
Posts: 305



PostPosted: Mon Aug 12, 2019 6:58 am    Post subject: Reply with quote

I like how the only tool in evidence is a hammer
_________________
2003 996 C4S in Silver, Manual, PSE, new in UK, now in New Zealand
Mods so far: K&N induction, Kenwood Navigation and AMP, LN Engineering IMS, fully replaced suspension with new factory parts
 
  
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Griffter
Spa-Francorchamps


Joined: 22 May 2016
Posts: 335



PostPosted: Mon Aug 12, 2019 7:32 am    Post subject: Reply with quote

Proper 90s engine, proper 90s T-shirt. Nice!
 
  
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EGTE
Imola


Joined: 06 Jul 2015
Posts: 830



PostPosted: Mon Aug 12, 2019 9:16 am    Post subject: Reply with quote

Nice work, nice garage!
 
  
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Mon Aug 12, 2019 4:00 pm    Post subject: Reply with quote

Thanks guys. I do love my 90s music Smile The garage is a great space to work in, all sorted out now but I really do need to give the floor a proper clean after spilling a load of engine oil and doing some underside cleaning on my SEC. If it wasn't for the space I have available and the lift in the garage I wouldn't attempt half of what I do now.



MC
 
  
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infrasilver
Fast & Furious
Fast & Furious


Joined: 04 Oct 2010
Posts: 8329
Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Tue Aug 13, 2019 1:01 am    Post subject: Reply with quote

Bargain price for a crankshaft and comes with a load of other free parts Thumb
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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: Tue Aug 13, 2019 6:41 am    Post subject: Reply with quote

The premium dual row IMS bearing is worth £600 on its own Grin
_________________
2000 Manual 996 C4 Arctic Silver Convertible


 
  
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sportsandclassic
Approved Trader


Joined: 21 Apr 2008
Posts: 262
Location: Nether Alderley Cheshire


PostPosted: Thu Aug 15, 2019 8:22 am    Post subject: Reply with quote

I see you have a 997 GT3 intake central manifold with dual resonance flaps... ?
Whats the plan for that ?
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Sports and Classic Ltd

Sports and Classic - Porsche Service & Maintenance
 
  
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Thu Aug 15, 2019 8:34 am    Post subject: Reply with quote

sportsandclassic wrote:
I see you have a 997 GT3 intake central manifold with dual resonance flaps... ?
Whats the plan for that ?


It will sit above a set of ITBs with custom end tanks. This is for the project I am working on with Dammit.

MC
 
  
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sportsandclassic
Approved Trader


Joined: 21 Apr 2008
Posts: 262
Location: Nether Alderley Cheshire


PostPosted: Thu Aug 15, 2019 8:37 am    Post subject: Reply with quote

MisterCorn wrote:
sportsandclassic wrote:
I see you have a 997 GT3 intake central manifold with dual resonance flaps... ?
Whats the plan for that ?


It will sit above a set of ITBs with custom end tanks. This is for the project I am working on with Dammit.

MC


Very nice.

Make sure the securing screws that hold the flaps to the shafts are thread locked in as they fell out on some engines and they were replaced complete with new units.
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Sports and Classic Ltd

Sports and Classic - Porsche Service & Maintenance
 
  
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