Porsche Enthusiasts Club Forum

It is currently Sun Jul 06, 2025 8:18 am
Classic Line Insurance


All times are UTC




Post new topic Reply to topic  [ 43 posts ]  Go to page Previous  1, 2, 3
Author Message
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Tue Jun 01, 2010 3:31 pm 
Offline

Joined: Sun Jan 24, 2010 12:07 am
Posts: 2381
TIPEC membership: 0
hi jim
what i was trying to say, or rule out was which 16v head it had. e.g the head is a 2.5 16v and not a 3ltr 16v. if the 16v rocker cover heads are the same on the face, are they the same all the way though? and there fore compatable with eachother? and if 3ltr/2.5 16v head head fits a 3ltr block, which someone mention was the same as 2.7 block then a 2.5/3ltr head would also fit 2.7 block?

at the start of thread it says i brought 944S, so maybe its just an /S with some engine work rather then a 944 with an engine swap? e.g. if the tach been swaped? surly with the right ecu the redline would be the same 6800, and wouldnt require a tach swaped, the needle would just run in 2 the redline?

ecu isnt diffluct 2 remove, took me about 5mins when i re chiped mine, not a very comfortable 5mins. i lyed arcoss from the drivers seat. legs out the door, head in the passanger foot well. there a woooden plate then a metal brack.

are the fule injectours 4 the S the same as 2.5 8v?

i would sirguesst find out which engine the car orginaly came with. was the 2.7 modle avable yet? D reg 1986?

_________________
Zermatt 88 944 turbo
Augtronic ecu&map
3071gtx/0.63tial V band/38mm Dpw
3" fastroad exhaust
80lb injectors
Stage2 intercooler
Apexi ebc.
9xx quick shift/ front shift/fuel pump
M030 brakes/Coilovers/30mm front roll
18" JARA cups 225F/285R


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Tue Jun 01, 2010 10:23 pm 
Offline

Joined: Mon Nov 05, 2007 9:20 pm
Posts: 5427
Location: Tamworth
TIPEC membership: 4260
2.7 was only made for one year, '88/89 but could have been retro fitted, can't understand a lux being turned into an S, usually the other way 'round due to cam chain issues

_________________
1986 911 Supersport in Silver (the new red).
2023 Hyundai Tucson in dark grey.
2014 Mazda 2, ZOOM ZOOM, its the wifeys, honest !


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Fri Jun 18, 2010 3:46 pm 
Offline

Joined: Tue May 25, 2010 3:50 pm
Posts: 16
TIPEC membership: 0
Skype ID: mcarolan2
Right,
Sorry about the delay in getting back to the forum - I had to drop everything and move to Amsterdam for 3 weeks for work (I'm an IT Consultant). Back now though and finally got a good mechanic to look at my 944S to diagnose the problem. There are many botched repairs, one on top of the other - but fundamentally its electrical. His best guess at this stage is that this model year saw the introduction of an additional circuit which automatically produced more revs when the power steering was fully engaged. This badly designed circuit wasnt fused properly and was prone to overheating/fires. Half of my wiring loom isnt really a loom at all but is a botched/taped set of miscoloured single wires repaired after fire damage. At least 2 of the engine earths are missing and the flywheel sensor wiring is damaged. Some of the Diagnostics ports are damaged / missing and someone has also broken off the sealed breather tube housing the oil filler cap which is introducing unmetered air into the system.

He has suggested a "back to basics" logical approach which starts with replacing the loom. As he does this he will partially strip the engine and list other running repairs as he goes (Vac tubes wrongly connected/ brackets missing etc).
He actually says the engine will probably adjust to run with bigger bore/pistons (at least give 90% performance) but at the moment he cannot diagnose anything until he can be sure the electrical connections are there and working......

It seems logical to me. Anyone know where I can get a cheap wiring loom for a 1986 M/Y 944S ?

Sparky


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Fri Jun 18, 2010 4:28 pm 
Offline

Joined: Mon Nov 05, 2007 2:27 pm
Posts: 1595
Location: dorset
TIPEC membership: 3045
oh that is exactly what happened to my old S, the best part of the loom burnt out.


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Fri Jun 18, 2010 8:33 pm 
Offline

Joined: Mon Nov 05, 2007 6:24 pm
Posts: 3008
Location: Halifax
TIPEC membership: 4636
Two options or a combination of them. Porscheapart Ramsbottem, (dismantlers) will sell you a decent undamaged loom. Then the engine harness can be bought new from Lindsey Racing in the States. I've got there injector harness on mine & its a top quality job in fire proof over braid. New connectors & not too difficult to fit. Not a bad price either though the exchange rate doesn't help. They also sell silicon vacuum pipe kits which I can recommend. Before you start make sure you know what your letting yourself in for. DIY isn't so bad but using a sparky to do this it may be cheaper to break it & buy a good one. (What I should have done. :blackeye: ) No guarantees with what else you will find when the wirings sorted. Good luck.

_________________
944 lux, Eco car. Off the road more than it's on!
Audi 2.0 TDI Good but rather boring..........
944 now sold.


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Fri Jun 18, 2010 10:05 pm 
Offline

Joined: Mon Nov 05, 2007 2:03 pm
Posts: 807
Location: North East
TIPEC membership: 4734
I think that there was a recall on the 944S to sort the wiring to the power steering pump. Check on the VOSA website. Don't know if Porsche would still repair the wiring now if yours has missed out?

_________________
Simon Poole

1992 968 Coupe in midnight blue


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Fri Jun 18, 2010 10:16 pm 
Offline

Joined: Mon Jun 23, 2008 1:27 pm
Posts: 934
Location: Oxford
TIPEC membership: 5218
You mean this one?
http://www.vosa.gov.uk/vosa/apps/recall ... =Blank&tx=

Wonder if that has been done to mine as it has a pretty good OPC history.

_________________
1983 Porsche 944 - Ongoing project/problem child
1988 Porsche 944S - Sold!
2002 Boxster 2.7 - Daily Driver


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Sat Jun 19, 2010 5:20 am 
Offline

Joined: Tue Jun 01, 2010 11:38 pm
Posts: 409
Location: Surrey
TIPEC membership: 6410
EL Gordo wrote:
oh that is exactly what happened to my old S, the best part of the loom burnt out.



There'a one here on Pistonheads that has fire under the bonnet damage...

http://www.pistonheads.com/sales/1804089.htm

_________________
Porsche 1992 944 S2 - Fastest Colour

Previous Indulgances:
4 Auto 944's from new 85 - 93
Auto 924


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Sat Jun 19, 2010 9:36 am 
Offline

Joined: Mon Nov 05, 2007 2:03 pm
Posts: 807
Location: North East
TIPEC membership: 4734
madrob6 wrote:
You mean this one?
http://www.vosa.gov.uk/vosa/apps/recall ... =Blank&tx=

Wonder if that has been done to mine as it has a pretty good OPC history.


That's the one.

I think that it only applies to the 944S as this is the only one with an electrical connection to the power steering pump. As far as I know, the same power steering pump is fitted across all 944/968 models except the "S". My 968 is running a 944S2 pump and the only connections to it are hydraulic.

_________________
Simon Poole

1992 968 Coupe in midnight blue


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Sun Jun 20, 2010 5:04 pm 
Offline

Joined: Tue May 25, 2010 3:50 pm
Posts: 16
TIPEC membership: 0
Skype ID: mcarolan2
Hi Simon,

I ran my car up the ramps today to have a quick look and found two spare wires from the loom going nowhere - right next to the steering pump which has no electrical connections on it.....could be the pump was replaced for a different model. I'm going to the Porsche main dealer tomorrow to see if I can get a part number for the engine harness (expect it to be £££s from there) and a wiring diagram for the 944s (the haynes manual I inherited is for the 8V cars). Feel like I'm honing in on the main cause of the problem now..

Sparky


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Sun Jun 20, 2010 5:31 pm 
Offline

Joined: Fri Feb 26, 2010 9:05 pm
Posts: 2291
Location: Lanark
TIPEC membership: 6030
I really think you should go back and check your ECU part number as Howard said. It would rule that out and wouldn't cost a penny to check.

MisterGT wrote:
If opportunity arises try to get hold of the part number on the ECU to confirm which one it is. The ECU is located behind a wooden (yes wooden !) plate located in the passenger footwell. Pull back the carpet from just below the glovebox and you will see the plate held in place by 4 screws, behind that there should be a metal frame to which the ECU will be attached, it may be possible to read the part number without taking the ECU out, but it is a pretty straight forward job to detach the ECU from the wiring loom if you do need remove it. There is a guide on Clarks Garage in the Garage Shop Manual section, listed under DME - control unit removal and installation.

The part number for the 'S' is 0261 200 080
The 8V could be 0261 200 076 or 0261 200 086 or 0261 200 057 depending on the year

Anythin else could be S2 or turbo ( dont have the numbers to hand)

Howard

_________________
Lee.

JOIN THE CLUB, CLICK HERE

2003 996TT

Due to the current economic climate, the light at the end of the tunnel has been switched off!


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Sun Jun 20, 2010 8:05 pm 
Offline

Joined: Tue May 25, 2010 3:50 pm
Posts: 16
TIPEC membership: 0
Skype ID: mcarolan2
Sorry - you are quite right - asking for help then not taking the advice. The DME is indeed a 944S part - serial number is "0261 200 080" - its even called a Type - 944S on the Bosche label. Lots of after factory additions coming out of the wiring loop, cd amplifier bolted there too. I just looked up the price for an engine wiring harness - £971 from Porsche! There are plently on ebay stripped out but they are all S2 or Turbo. Still searching the net for a wiring diagram but I have downloaded a really good parts list with GA drawings.

Sparky


Top
 Profile  
Reply with quote  
 Post subject: Re: Porsche 944S (with re-bored cyl head)
PostPosted: Mon Nov 08, 2010 2:50 pm 
Offline

Joined: Tue May 25, 2010 3:50 pm
Posts: 16
TIPEC membership: 0
Skype ID: mcarolan2
I Finally got this problem sorted (thanks to Martin Browne a Porsche Independent specialist in Meridan). He replaced the engine wiring harness, also 2 or 3 engine sensors (2 anti-knock sensors) plus a flywheel timing sensor. The car flies along now. I have another small problem though for which I will start a new thread.

Many thanks to all helpful comments.

Sparky


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 43 posts ]  Go to page Previous  1, 2, 3

All times are UTC


Who is online

Users browsing this forum: No registered users and 20 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group