Henrik68

Bang Boom
Last Sunday it was finally time for the first trackday for me and new family member 944 turbo 1987.

A little nervous before the first run with 944án I went slowly out of the track . Warmed the tires and the car in about 2 laps .

When I would get up in the pace of 90-100 % as the car begins BE AWKWARD . I feel that the car is completely decrepit like if you turned off the key Böööööööööööö , or not getting any fuel. After Boooo so slamming it significantly. Crackers followed by a proper cloud with BLACK smoke, the car jerks a little and get full power again . To start with booo again . I felt that it came with the curves and the G forces , maybe some loose connection but it might have to be stepped on / off the gas quite fast at track days.
After the first round I was picking apart the fuel pump connector ( behind the right rear wheel ) and smeared it with contact grease . Also had the fuel relay in the fuse box in order to remove any oxide on the pins. The tank filled ¾
After the second round of the track where I think the problems came more often and more frequent , eg completely undrivable so I went out into the depot where the car stopped itself from low revs. Started the car after 15sec no problem but the heat gauge show max temp. I go when out on the road outside the racetrack to cool the car for about 5km . No problem with booooo all during quiet roading . Tests accelerating 2-3-4 to 6500rpm no problem, no Booo .

The car is not completely original
Reground cam and cam housing . Area951 chip KX400 turbocharger . mahle pistons
Not to begin with hysterical troubleshooting i now consults you , knowledgeable Porsche 944 people for help to get this nice car on the track again !
Anybody have any tips ideas, I would be EXTREMELY grateful.
Sincerely
Henrik

Hi Peter

I have Michelin Pilot Sport on all 4

The splitter ...!? Is it the small rubber lip under the front you think of?

Hmm maybe i have to do the alignment again ... Will read the web page first

Thanks allot

The speed is tested on a big fine high way near Stockholm capital of Sweden. It's pretty straight! "unwindy" nice new asphalt, almost like autobahn

Michelin Pilot Sport 295 30 19 N2 100Y rear

Tire pressurer is according to the label but upper level.

This is not a big problem i was most curious about other experienced their cars!

The rear spoiler is working.

I looked around the net and found something called Sway Bar! Do you think that can help?

Thanks all for the quick response!

According to my mechanic so is wheel alignment between road and aggressive. The tire pressure is standard. The car is equipped with PASM (Sport mode) but have no "lowering kit".

The car is also used to go to work so an aluminum front splitter, don´t i think will work.

Do you think it would help to install stiffer/lower springs in the car?

Is there any "attractive" front spoiler that can almost replace a splitter?

High speed requires good brakes! I have replaced my old against new OEM. I agree the car makes a lot of noise in that speed !!

High speed saves time .....

Hi

I bought my first 997 C2S and of course I have to try to throttle up a bit. My feeling when the car comes up to over 270km/h (170mph), the nose feels very light and almost a bit unstable. I have done a wheel alignment. The wheels are great and N labeled. I am a beginner in fast cars.

I am curious how you experience your cars at high speeds?

Hi

I will replace my brake lines and then i will have air in to my system, or? How do i do to get all air out? I us a power bleeder.

Thx Loren !!

Hi

I feel pretty confident about the Rotors and Discs. Seen on DIY.

But should I change the fluid and lines first or last? Or at all wheels at the .... ?

Hi all Porsche lovers out there

I will replace Rotors, Pads, brake lines, wear sensor and fluid on my 997.1 C2S but i have no workshop manual.

Do i have to do it in some specified sequence?

Does anyone have any good tips? I have checked the DIY

Very grateful for all good ideas!!

Thanks for your input phillipj

This i can read at Zimmermann home page and i have friends who have used the Coat Z rotors and are super happy

"Since 2008 Zimmermann is offering almost 400 Standard and almost 400 Sports Brake Discs in a coated version named "Coat Z – anti corrision"."

So i give it a chance

Finally i bought Zimmermann and Textar

Hi

Does anyone know what it is for minimum thickness of the Carrera S original rotors?

Or how can you ensure that the rotors need to be replaced?

Painted .... !? pls explain! with what? Did you do it on the lid?

I think it looks super cool !!!! I WANT ...

Hmmm a RED S ...... Cool :notworthy: ! Is that a aftermarket thing?

I´m happy ! I´m not "a prophet of doom"! Enjoy driving my car every day :drive:

Hi

I hade a look at mine and i have 22mm nut :thumbup:

Hi

I need your help choosing what to buy.

I have a 997 C2S -05 that the rotors and pads should be replaced on.

Should you invest your money in original or go for an aftermarket solution e.g. Zimmerman or a other brand? Brembo is fine but very expensive

I want drilled ones but should I even go for slotted?

Are there any brand that have coating btw that prevent the discs to rust?

Original is 330mm front! Is there any reason to go up in size?

Hope for help from you knowledgeable Porsche friends

I found this at rennlist:

"To determine if your M97 engine has the improved IMS, you will need to check your engine number.

if the engine number is 68509790 and below, unfortunately it still has the smaller removable IMS bearing.

if the engine number is 68509791 and above, it will have the new large single row IMS. The IMS cover also has the 22mm nut.";

So ? PCM and Batt cable .... except the IMS !?

Hi phillipj

Can you describe in more detail what you mean by other problems regarding the 2005 997?

The IMS problem i´m aware of!

Was not compressor and tire sealant included in the 05 ?

Excuse me a beginner's question

Can you see if your vehicle is equipped with a power kit?