Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
991 : 2011- 12
997 : 2004- 74
996 : 1997-2005 31
993 : 1993-1998 4
964 : 1989-1993 3
Carrera 3.2 : 1983-1989 2
Carrera SC : 1977-1983 1
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 2
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 14
Cayman : 2005- 16
Cayenne : 2003- 2
Macan : 2014- 2
Panamera : 2009- 2
912-914-924-928-944-968 2
959 - CarreraGT - RaceCar 0
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue Apr 30, 2019 6:19 am    Post subject: Reply with quote

Thanks Kris Smile

Yesterday the shorter bolts arrived for the tappet chest, the standard ones are 35mm long but due to a slight machining issue on the prototype some areas where it bolts down are around 3-4mm lower than they should be. Thankfully it doesn't affect any areas where the height is critical so I can just bolt it down with shorter bolts, after checking that they won't bottom out of course.



Tappet chest all bolted in and bolts torqued to 10Nm, starting from the middle and working out.



Camshafts and variocam actuator fitted. I'm not changing the pads on this as they look OK and they won't be in for long.
The tension was taken off the actuator using a piece of M5 left hand threaded rod and some nuts. At some point they changed from using a right handed thread to a left hand thread on these, so you can find either on the cars.



Caps and variocam actuator all torqued up to 10Nm, camshaft drive sprocket refitted. Final timing will be done when the cover is installed.



Now cleaning up the cover. I'll get some sealant ordered ready to refit it.
MC
 
  
View user's profile Send private message Visit poster's website
   
maldren
Suzuka


Joined: 07 Oct 2016
Posts: 1065



PostPosted: Tue Apr 30, 2019 8:16 am    Post subject: Reply with quote

Alex wrote:
maldren wrote:
There was a Wheeler Dealers in the US (sorry can't remember which) where they added material to worn cam lobes by welding. Seemed highly dubious to me, apart from anything else, the material of the cams is critical to avoid wear.


Weld is pretty tough stuff, much harder than standard unhardened steel. And I suppose if you then weld and quench, you could make it pot hard, then temper back to the toughness you require, especially if you can weld with an EN steel that is made for hardening.

All in, it's probably a very cheaper solution than manufacturing new cams.


Yes I agree and probably fine on a 'more basic car' but I would never use this on a Porsche! The real issue is that you don't know how hard the new finish is (they didn't seem to test it at all.)
_________________
Mike
2003 996.2 C2 Coupe Arctic Silver
 
  
View user's profile Send private message
   
NedHan79
Nürburgring


Joined: 08 Nov 2018
Posts: 441



PostPosted: Tue Apr 30, 2019 9:07 am    Post subject: Reply with quote

First class stuff mc Thumb
_________________
#modified996mk1
 
  
View user's profile Send private message
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue Apr 30, 2019 11:44 am    Post subject: Reply with quote

There was definately a leak from the IMS bearing cover, so a good excuse to whip the cover off, check out the bearing, and reseal it.

The two tensioners at this end of the engine have been removed.



IMS centre nut removed with a ring spanner and screwdriver



Three retaining bolts off.



Gently prise out the cover.



Bearing is nice and smooth Smile



I have a new seal and o-ring on order from Porsche, as well as some Loctite 5900 which should do for putting it back together.

MC
 
  
View user's profile Send private message Visit poster's website
   
rdodger
Monza


Joined: 08 Apr 2018
Posts: 185
Location: Cheshire


PostPosted: Tue Apr 30, 2019 12:04 pm    Post subject: Reply with quote

Are you going to remove bearing seal or leave it in place?

If you do remove It would be interesting to see what grease if any is still in there.
 
  
View user's profile Send private message
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue Apr 30, 2019 12:06 pm    Post subject: Reply with quote

rdodger wrote:
Are you going to remove bearing seal or leave it in place?

If you do remove It would be interesting to see what grease if any is still in there.


I will remove it. Going to wait until the new seal arrives so might be later this week. I love the suspense Smile

MC
 
  
View user's profile Send private message Visit poster's website
   
rdodger
Monza


Joined: 08 Apr 2018
Posts: 185
Location: Cheshire


PostPosted: Tue Apr 30, 2019 12:10 pm    Post subject: Reply with quote

MisterCorn wrote:
rdodger wrote:
Are you going to remove bearing seal or leave it in place?

If you do remove It would be interesting to see what grease if any is still in there.


I will remove it. Going to wait until the new seal arrives so might be later this week. I love the suspense Smile

MC


Do you mean you are replacing the seal on the bearing or the cover?
 
  
View user's profile Send private message
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue Apr 30, 2019 6:47 pm    Post subject: Reply with quote

The seal and o-ring for the cover. I will be popping the seal off the bearing and ditching it.

Tappet chest cleaned in parts washer and dishwasher...





MC
 
  
View user's profile Send private message Visit poster's website
   
Chris_in_the_UK
Estoril


Joined: 19 Mar 2014
Posts: 3564
Location: Harrogate


PostPosted: Tue Apr 30, 2019 7:22 pm    Post subject: Reply with quote

Loving your work MC!.
_________________
2006 Cayman S PCCB's
 
  
View user's profile Send private message
   
PeterS
Fuji


Joined: 01 Nov 2009
Posts: 9269
Location: Solihull

2003 Porsche 996 Carrera 2

PostPosted: Tue Apr 30, 2019 8:13 pm    Post subject: Reply with quote

Inspirational as always.

It inspired my to take mine for a drive.

Top stuff Thumb
_________________
 
  
View user's profile Send private message
   
steve r
Monza


Joined: 26 Sep 2011
Posts: 211



PostPosted: Wed May 01, 2019 6:26 am    Post subject: Reply with quote

Thanks for putting together the Cup cable video 👍
_________________
40th Anniversary
 
  
View user's profile Send private message
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Wed May 01, 2019 6:42 am    Post subject: Reply with quote

steve r wrote:
Thanks for putting together the Cup cable video 👍


No problem, I hope it makes sense and is useful.

MC
 
  
View user's profile Send private message Visit poster's website
   
Dammit
Watkins Glen


Joined: 23 Sep 2016
Posts: 2140



PostPosted: Wed May 01, 2019 7:51 am    Post subject: Reply with quote

Is there any tradition of Porsche painting cam covers, or was that never a thing?
_________________
My 996, AKA Project Ridiculous
 
  
View user's profile Send private message
   
wasz
Sepang


Joined: 28 Dec 2012
Posts: 2916


1999 Porsche 996 Carrera 2

PostPosted: Wed May 01, 2019 9:40 am    Post subject: Reply with quote

rdodger wrote:
If you do remove It would be interesting to see what grease if any is still in there.


It will be full of dirty looking oil like mine was. Flipping the outer seal allows this oil from the IMS tube to pass through the bearing and get refreshed.


_________________
My special order MY99 Vesuvious Charcoal 996 | Clutch, Fly RMS IMS AOS Job |
Steering Rack Hard Lines | Air Con Compressor / System
 
  
View user's profile Send private message
   
deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6485
Location: Brighton


PostPosted: Wed May 01, 2019 7:11 pm    Post subject: Reply with quote

I don't like to butt in with obvious points but just to be on the safe side ..

If you have altered the position of the vario cam unit .. removed it etc then dry fit the cam cover and make sure the solenoid is central in the cam cover hole .. i've seen them shifted to one side before and it causes leaks .. mechanic should have removed cover and adjusted it but hadn't .

There is a left and a right handed thread tool for locking these down .. i had assumed they were always like this but im afraid i just follow instructions so don't really know if it was the same at one point .

When you wind the 13mm nut back on the ims .. put a bit of sealant under it .. just in case the small seal gets damaged this will stop any further leaks .

Shaft play and its up down .. in / out and spin.. at least that's how i do it but its pretty obvious when there is wear Smile
_________________
.

My Daughter's Crowdfunding page Here

Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Wed May 01, 2019 7:20 pm    Post subject: Reply with quote

Cheers deMort your input is always greatly appreciated. You are the expert. I'm mainly making it up as I go along.

MC
 
  
View user's profile Send private message Visit poster's website
   
Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 15935
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Wed May 01, 2019 7:32 pm    Post subject: Reply with quote

wasz wrote:
rdodger wrote:
If you do remove It would be interesting to see what grease if any is still in there.


It will be full of dirty looking oil like mine was. Flipping the outer seal allows this oil from the IMS tube to pass through the bearing and get refreshed.



Same here:


_________________
2000 Manual 996 C4 Arctic Silver Convertible


 
  
View user's profile Send private message
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Fri May 03, 2019 2:07 pm    Post subject: Reply with quote

After some discussion, it was thought a good idea to add in the rev ranges and rev checking like on the later cars. This is being done in the instrument cluster so it is independent of the ECU being used. There are six ranges set up, which can be set for any desired RPM value. The system counts the number of ignition events in each range and stores the number along with the time in seconds that the event occurred at.


Open Youtube Page


You can see the RPM at the top of the screen, and the counts and times for the rev ranges as the values are increased.
MC
 
  
View user's profile Send private message Visit poster's website
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6941
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue May 07, 2019 6:07 am    Post subject: Reply with quote

New o-ring and outer seal have arrived, along with the two sealing washers for the tensioners. I will also be fitting new viton o-rings for the tensioners but these are coming from another source and haven't arrived yet.



Cover removed from the IMS bearing, all looks nice and clean inside, but no sign of any grease as expected.



Cover put back in place after fitting the new o-ring to the shaft.



Bolts all cleaned up and refitted with some Loctite thread sealant on them.



Centre nut refitted, again with Loctite thread sealant.



MC
 
  
View user's profile Send private message Visit poster's website
   
NedHan79
Nürburgring


Joined: 08 Nov 2018
Posts: 441



PostPosted: Tue May 07, 2019 9:30 am    Post subject: Reply with quote

So did you pack the bearing with grease or what is the idea there?

Also on a random 1, is there much to removing the front wings? I’m guessing it’s only a matter of bolts along the top, probably 1 down at the sill and 1 behind the bumper?
_________________
#modified996mk1
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Goto page Previous  1, 2, 3 ... 35, 36, 37, 38, 39  Next
Page 36 of 39

 
Jump to:  

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 vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum