what is an 'early' 3.4 996?
Discussion
Chris Stott said:
There are people who are adamant they are beat at factory pressures. The improvement at lower pressure is so dramatic I wonder if they have ever driven a 996.
I agree. Factory recommended pressures for the 996 on 18s is 36F 44R. Whichever tyre you have, they feel awful on those pressures. They’re just too hard, and the car follows every imperfection in the road. In a 996 C2 coupe, I run 32F and 36R, and I find that works really well. I also prefer to have the 265/35 rear tyre, the 285/30 seems overtyred for 300bhp.ATM said:
Good question
Difficult to put my finger on
There was a problem with the brake pedal which I spoke up about
Then the suspension didn't feel good or sorted or together I'm some way
So I'd suspect worn dampers maybe because it had mostly all new arms, drop links and tie rods I think they're called - join the rack to the hub
Not sure about top mounts
The issue with 996 suspension is there are so many components connecting the hub to the body…whenever I’ve stripped a corner, I’ve discovered it’s hopeless trying to work out if it’s the coffin arm, or maybe the control arm or top mount that’s worn and needs changing, so you need up changing the whole lot, on all 4 corners, and then it feels brilliant again..!Difficult to put my finger on
There was a problem with the brake pedal which I spoke up about
Then the suspension didn't feel good or sorted or together I'm some way
So I'd suspect worn dampers maybe because it had mostly all new arms, drop links and tie rods I think they're called - join the rack to the hub
Not sure about top mounts
Sometimes it’s obvious and the bush will have split and clearly needs changing, but it’s not always so clear.
A bit more work on mine over the last few weeks.
3 weeks ago it blew a cooling pipe when my wife was driving out of central London at 6pm and dropped all its coolant. 1.5hrs later the AA arrived, reattached the pipe and tried to refill the system… and failed. 2 hours later the flatbed arrived to recover the car. Needless to say I wasn’t the most popular person
Fortunately, our trusted mechanic knows what he’s doing and despite some early worries about gunge and condensation in the filler tube, a few hours of filling and bleeding later it was all good again.
We then decided to do some other work whilst my wife was over here in Spain for 10 days… service (oil, filters, plugs, main belt), AC compressor (it was very whiny) and gearbox service… car blew a power steering pipe while there, so that got done as well (more will need doing in due course, so may look at doing the rack as a precaution)… plus new clips for most of the cooling system.
AC condensers are knackered and restricting air flow to the rads (it’s running a bit hotter than usual) but somehow not leaking, so that’s another small job when wifey is back here in a couple of weeks.
Mechanic says it’s running super sweetly… strong oil pressure and no ticking when hot or timing chain rattles when started from cold.
215k miles
The value of having someone you trust to look after your car is priceless.
3 weeks ago it blew a cooling pipe when my wife was driving out of central London at 6pm and dropped all its coolant. 1.5hrs later the AA arrived, reattached the pipe and tried to refill the system… and failed. 2 hours later the flatbed arrived to recover the car. Needless to say I wasn’t the most popular person

Fortunately, our trusted mechanic knows what he’s doing and despite some early worries about gunge and condensation in the filler tube, a few hours of filling and bleeding later it was all good again.
We then decided to do some other work whilst my wife was over here in Spain for 10 days… service (oil, filters, plugs, main belt), AC compressor (it was very whiny) and gearbox service… car blew a power steering pipe while there, so that got done as well (more will need doing in due course, so may look at doing the rack as a precaution)… plus new clips for most of the cooling system.
AC condensers are knackered and restricting air flow to the rads (it’s running a bit hotter than usual) but somehow not leaking, so that’s another small job when wifey is back here in a couple of weeks.
Mechanic says it’s running super sweetly… strong oil pressure and no ticking when hot or timing chain rattles when started from cold.
215k miles

The value of having someone you trust to look after your car is priceless.
Chris Stott said:
strong oil pressure and no ticking when hot or timing chain rattles when started from cold
I used to get random ticking on my older 996. Never quite pinned it down to hot or cold. But very common on cold start ups so assumed oil not circulated around. Then noticed it very occasionally when hot like coming off the motorway and thought my diagnosis was off. What would ticking when hot mean?ATM said:
I used to get random ticking on my older 996. Never quite pinned it down to hot or cold. But very common on cold start ups so assumed oil not circulated around. Then noticed it very occasionally when hot like coming off the motorway and thought my diagnosis was off. What would ticking when hot mean?
986, 987 and 996 I find often have a ticking noise on startup, plus after 5 mins of idling if they’ve been left parked up for a few weeks. This noise soon disappears after a decent drive, leading me to suspect it’s just an oil circulation issue.The same ticking noise when hot would lead me to suggest it’s the same lack of oil circulation. Maybe try an oil change and see if the problem persists. I use Mobil 1 5W-40
IREvans said:
nebpor said:
The noises Porsche engines make are terrifiying. I think Mr Mezger was laughing his head off when he designed the idle for the turbo/GT cars!
A 996 turbo at idle sounds like it’s broken doesn’t it..? Not one for those with anxiety..!
Hoofy said:
IREvans said:
nebpor said:
The noises Porsche engines make are terrifiying. I think Mr Mezger was laughing his head off when he designed the idle for the turbo/GT cars!
A 996 turbo at idle sounds like it’s broken doesn’t it..? Not one for those with anxiety..!
It’s once they warm up and the oil thins a bit you get all the noise. Bloody awful.

Listen to this one in between the owner revving the knackers off it. About 55 seconds in.
https://youtu.be/mQRww-C1d4o
Edited by marky911 on Wednesday 2nd August 03:51
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