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Topic Re: re: IMSB and 3k |
P1128 (again) and Porsche IMSB "solution".... MarcW - 6 years ago |
re: IMSB and 3k grant - 6 years ago |
Re: re: IMSB and 3k MarcW - 6 years ago |
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grant
note that ~ 3k is also the resonant frequency of the M96 motor. i had a bearing "nearly" fail and there was no degradation of that resonance - its was always there.
Furthermore, my experience is that one, un-named replacement IMS bearing made of harder materials, lasts worse than the factory. Those hard balls just chew the crap out of the races. Mine was a mess - astounding that it held together. Pedro's answer - a new same old bearing and an oil feed, makes the most sense to me. There are a couple other lubricated solutions too.
As to the P1128. Good luck. Troubles with "no trouble found" and intermittent are maddening. You might elect to just ignore it.
My car continues to take gas perfectly. what did I fix? Nothing that I know of. I mist have fixed something, but it was mainly an accident (or it was slightly clogged and i did not detect the clog).
G
Update.... MarcW - 6 years ago |
Re: Update.... SteveJ (2010 987 base, manual trans) - 6 years ago |
Don't know for sure... MarcW - 6 years ago |
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grant
The one new Porsche that calls to me and might open my famously closed wallet.
Terrific car, once one tames the front end plow (alignment and rear roll stiffness fixes). As usual Porsche dialed the agility out for "safety".
I am not aware of it being substantially worse than other new model Porsches, specifically Caymans in terms of maintenance. In fact, its really not all that different from the 981 v1 Cayman S it is derived from. The suspension is different (mostly coil-overs, rates don't affect maint), tune of motor, wing (no maint there), seats (ditto), control arms (ditto), safety stuff (more dittos). The 6-speed (GT4 are all 6 speeds BTW) does have an issue - most track users have broken 3rd gear at least once. I know one guy on #4 - all courtesy Porsche, but woe to he who has one without a warranty!.
So yes, new = harder to work on, but i just cannot see the GT4 being all that different from a run-of the fancy mill Cayman_s, with 5 out of 6 gears in service.
I'm told the latest revisions fixes the gearbox.
G
3 rd gear and understeer grant - 6 years ago |