brendel

I don't think moisture is an issue as in the normal use of a car the oil will pick up moisture anyway ( see your 997 user guide) it will disappear after a highway trip

Here in Europe Porsche is advising mobil1 5W50, the higher hot viscosity seems important, BMW is advising Castrol Edge 10W60 for all its M models, so an even higher hot viscosity than Porsche

I have heard about the scorched cylinders on the M97.01 and wonder if these are not linked with the rupture of the oil film by using too thin oils like 0W40 or 5W40

The move to 5W50 in Europe seems recent (a couple of years) and I wonder if this is not an easy remedy to all these M96 and M97 engine failures ( excluding the IMS related issues of course)

Great, don't forget that you own a wolf in sheepskin so every time you will open the throttle the "dark side" of the car will come back

Hi there, I reached 275KPH on the Autobahn, I felt I approached top speed

What an engine noise!!!vibrations and wind noise, it seems to me that the car knew it was on the autobahn, like it was kind of happy :thumbup: the throttle seemed very responsive, I felt like I was driving another car and for once seeing what its potential was

Yes you do get a feeling that the steering gets lighter, I also felt what Uwon described that the rear seems to be jerking around ( engine mounts?)

Another feeling is that the brakes are very soft and I really wonder how quick you can stop the car at that speed, I then understood why they sell all these big brake upgrades

Take care

If your engine works well why would you do that?, the 05-08 design has proven to be highly reliable

Buy yourself peace of mind with Porsche Guarantee ( up to 10 years and 125 000 Miles )

great, enjoy

I have what you need, I would need your email though, if you can send me a private mail

you will need to go and download the file it is 55 MB

Hi, I am very surprised that the factory mufflers did not do the Job, a lot of noise is coming from the air intake, this is why Porsche has a kind of muffler on the intake ( this is where you have written porsche on the silver intake manifold ) so getting back to a normal airbox is what you need ( get it on ebay )

I have 2 kids, 4 and 7 and we go everyday to school with the 997C4S, I bought inflatable seat boosters ( bubble bum or something like that) they fit nicely and don't damage the car

Regarding the choice of cars, the porsche will be more sportive and less comfortable for everyday use than a Mercedes or audi or BMW...

If you want a week end car for occasional track days the porsche is the best choice

Best value for money is the 997 C2S with manual gearshift, models after 2006 seem not to have the IMS issue, in all cases buy it at porsche with the guarantee, so you can sleep at night, I had many free fixes on my car and some could have been very expensive

The essential options are Porsche Sport Exhaust, Sport Plus mode, all the rest is a question of taste and frankly not needed ( leather dashboard though is beautiful )

A 996 is also a nice car, but look at this this way, the 996 is the gen 1 and the 997 is the gen 2 with many touch ups that makes it even better, in which the interior

If you intend to sell the car after a couple of years, best is to choose, black or silver, no fancy interior colors, manual gearbox, and most import low mileage, high mileage porsche are simply not selling

and the manual S version with the X50 power kit option

2006 C4S tiptronic 83 KMiles, everyday drive in snow, sun wind and rain ( switzerland)

-Front suspension at 80 KM ( all arms, bushings, domes, damper...)

-Middle cardan shaft replaced at 75KM due to rubber spacer wear

-Tiptronic gearbox ( was singing )

-multifunction nob on steering had to be changed

-IMS sealing ring was leaking and was changed ( not the bearing, just the sealing ring)

-I feel my front CV joints are to be changed

-I have a noise in the back suspension when i brake over bumpy ground and think the top suspension bushing are to be fixed too

-Mufflers are shot and need replacement, I rewelded them myself, the PSE has 2 exhaust pipe per side and they are bound by a metal strap that got loose and was droning, doing that I saw the mufflers are rusted and porous

-My oil pan is leaking and need a new loctite 5900 sealing

All changes have been done under guarantee so far

I pushed for many of these changes to happen , but the car was driving ok, someone else would probably not have noticed

I was often upset with all those things happening but came to the conclusion that if you drive any std car the way you drive a porsche you would not reach 80KM even not talking about other exotic sport car brands

Cheers

Hi Henrik,

The minimum thickness is engraved on the rotors min 32mm for the front ( new 34 ), for the back I think it is 28 mm new and Min 26 mm

Regards

Hi Alex,

Sorry for the delay I was just not around

See if this works

gaps.doc

Well it seems that picture did not go through

Let me rework that over the week end

See what you can do with this

I had to copy the pictures separately so it is not perfect

I double checked, but the description ( e.g. front lid to wing) should always match what you have on the picture

Good luck

50 IN Diagram - body gap dimensions - as of MY 2005

- Diagram - body front gap dimensions

- Diagram - body centre gap dimensions

- Diagram - body rear gap dimensions

- Diagram - Cabriolet gap dimensions

Tools

Designation Type Number Explanation

Star gauges for body gap

dimensions

commercially

available tool

NR.127-1

top of page

Diagram - body front gap dimensions

Gap dimensions, body front

Note

Set gap dimensions on the lids, doors and covers, or accessories in accordance with the gap

specifications.

·

Given a clearance in the opening that is too great or too small, the movable body or the accessories

must be centred accordingly.

·

· Ensure that the gaps do not taper or do not narrow at local points.

· The given values are guidelines which should be observed as far as possible.

· The guidelines apply to repair and assembly work.

· Use star gauges to measure the gap dimensions, Star gauges for body gap dimensions NR.127-1

lid to front apron

Explanation Type Basic value Tolerance 1 Tolerance 2

front apron Gap dimension A 4.5 mm +/-1 mm

front apron Lid only lowered Gap dimension B 2 mm

Main headlight to inner wing

Explanation Type Basic

value

Tolerance 1 Tolerance

2

to inner

Determine left and right

gap

Gap dimension

A

4.5 mm +/-1 mm

Diagnostic system: reading out fault memory and activating systems

dimensions, body front 4710

headlight to front apron

Location Explanation Type Basic value Tolerance 1 Tolerance 2

Main headlight to front apron Gap dimension A 4 mm +/-1.5 mm

Main headlight to external wing

Explanation Type Basic value Tolerance 1 Tolerance

2

Main headlight to external

wing

Gap dimension A 4 mm +1 mm

Main headlight to external

wing

Only lowered Gap dimension B 1 mm

Main headlight to top wing

Explanation Type Basic value Tolerance 1 Tolerance 2

Main headlight to top wing Gap dimension A 4 mm +/-1 mm

Main headlight to top wing Only lowered Gap dimension B 1 mm

Front lid to wing

Explanation Type Basic value Tolerance 1 Tolerance 2

Front lid to wing Gap dimension A 4 mm +/-1 mm

Front lid to wing Only lowered Gap dimension B 0.5 mm

Wing to front lid

Explanation Type Basic value Tolerance 1 Tolerance

2

Wing to front lid Determine left and right gap Gap dimension A 4 mm +1 mm

Wing to front lid Only lowered Gap dimension B 0.5 mm

flap to wing

Location Explanation Type Basic value Tolerance 1 Tolerance 2

Filler flap to wing All the way round Gap dimension A 3.5 mm +/-0.5 mm

Front apron to side direction indicator

Location Explanation Type Basic

value

Tolerance 1 Tolerance

2

apron to side direction

indicator

Gap dimension

A

1.5 mm

Wing to side direction indicator Gap dimension

B

0.5 mm +0.5 mm

Wing to outer side panel

Location Explanation Type Basic

value

Tolerance 1 Tolerance

2

to outer side

panel

Even transition from front

to rear

Gap dimension

A

4.5 mm +/-1 mm

top of page

Diagram - body centre gap dimensions

Gap dimensions, body centre

Note

Set gap dimensions on the lids, doors and covers, or accessories in accordance with the gap

specifications.

·

Given a clearance in the opening that is too great or too small, the movable body or the accessories

must be centred accordingly.

·

· Ensure that the gaps do not taper or do not narrow at local points.

· The given values are guidelines which should be observed as far as possible.

· The guidelines apply to repair and assembly work.

· Use star gauges to measure the gap dimensions, Star gauges for body gap dimensions NR.127-1

Door to wing

Explanation Type Basic value Tolerance 1 Tolerance 2

Door to wing Gap dimension A 4 mm +/-0.5 mm

Wing to outer side panel

Explanation Type Basic value Tolerance 1 Tolerance 2

Wing to outer side panel Gap dimension A 4.5 mm +/-1 mm

Wing to outer side panel Only lowered Gap dimension B 2 mm

Door to outer side panel

Location Explanation Type Basic value Tolerance 1 Tolerance 2

to outer side panel Gap dimension A 4.5 mm +/-1 mm

Door to outer side panel Doors only lowered Gap dimension B 2 mm

Hi there I have what you need but it is in the workshop manual in PDF, I need to find a way to cut and paste, there is a security lock

Worst case I will do it manually over the week end

Hi all,

Being fed up with the droning noise I had between 3 and 4 Krpm I decided to take a look seriously at it

I first thought it was coming from the tailpipes, no no, they sound like an empty tin can but no they are not the cause

I remembered having read about potential break of the exhaust pipes reinforcement ( since there are 2 of them on the PSE), that reinforcement is a thick piece of metal that kind of wrap up the pipes together, I really looked carefully a couple of time before but could not find any issue, when taking away the tailpipes i could see it better and it was clearly broken at 2 places on the 2 sides, this will require welding which I am planing to do

But

To be sure that I am not going to weld for nothing I decided to open the crack and put some silicon ( loctite 5940) to kind of dampen the noise

The good news is that it works and it lasts, silicon will stand high temperatures and will stand time

This is now day and night for me, that droning was just annoying, I am not ashamed to rev in public anymore :D

This quickfix could be a solution for those not wanting to weld and it takes maximum 5 minutes

I am planning to do the welding and will document it in the DIY section

Picture from ebay, the reinforcement can be seen just above the big pipe

Changing front brake pads on a 997 C4S/C2S

Link to support DIY tutorial

Thanks I will and keep you updated

Thanks Loren,

Yes I have seen both TSB the March and the July one, my whole struts and coils were replaced twice within one year at Porsche, this was performed under guarantee, I assume this is the first thing they look at and the end liks have been changed one year ago

The car is still under guarantee but my dealer just don't know where to look and they have been in contact with the factory tech crew...

I noticed that my front right CVjoint has longitudinal play, ( quite a lot, 1/4 inch ) the left one can hardly be felt, but I was told that only axial play maters with CVjoints

I was thinking also, could that come from the steering rack or steering column, or front diff? they are somehow screwed to the cross member ?

To describe the phenomenon again, I get a rattle at low speed only in Sport PASM, I guess I cannot hear it anymore when driving faster, It does not happen on speed bumps but only on potholes, It is somehow amplified if I hit a pothole while turning

And again, all the potential culprit have been replaced by new parts ( both control arms , sway bushing, end links, struts, coils, strut bearing and top bushing, inner and outer tie rods)

Thanks

Just a little update

The front of the car is now all new

Strut, strut bearing, strut tower..., Sway bar bushings, end links, Coffin arm, control arm, tie rod inner and ends

And the car still rattles when I put in PASM sport, I car ear it at low speed over potholes, not speed bumps though

I really do feel there is something loose out there, I did drive with an empty trunk...

any idea?

Hi RFM, I have just seen that you wrote arm (s)

This will cost me again an arm and a leg :jump:

I will check the diagonal arm first, it should be this one getting all braking stress, but at the same time the fact that the front ones had no issues makes me thinks Porsche finally designed something bulletproof (including the GT3 engine of course) , In the front the coffin arms were shot and I had to change them recently due to rattling, squeaking and all kind of other noises

Cheers

Thanks RFM,

Do you mean the "coffin shaped" arm or the diagonal arm?

Sorry for asking

I have the same issue on my C4S 997, Loud clunk on both rear sides, I can make it happen 100% of the time if I am driving downhill and slightly braking on a moderately bad road ( 30 MPH), it does not happen if I don't break. The main part under braking stress is the Diagonal Arm ( track arm) but I recently changed my front ones and they were like new after 80KMiles, so I doubt it is worn

So Far I changed the sway bar bushings but it did not change anything, next step the sway bar links, but I will first dismantle everything to check for play not to purchase part unnecessarily

I will keep you updated

Hi there my C4S from 2006 is running very well at 80 KMiles

Last month I did my oil change and checked the filter, it was really clean of metal particles

The oil consumption is amazingly low, I did a quart for 6000 miles

I would suspect that there is something putting stress on the IMS bearing rather than a self destruction, we heard a lot about grease starvation from several sources, why Porsche would then be keeping the same design for over 10 years, it would have been easily fixed without a dry bearing, could the timing chain and tensioners be the cause when they age

I am looking often at Mobile.de a german second hand car website for high mileage car, some do have new engine, but the cause is not explained the 3.8 engine seem to suffer from piston seize also

anyway, I documented myself too much about it and my solution to sleep at night was to take the Porsche guarantee as long as possible