LC997C4s

So looking at a 96 997 that overall is in pristine condition, C4S, 29k miles, highly highly optioned. PPI came back great, had a compression test done showing all cylinders at 245lbs, however, the DME scan was not as good as I would liked to see.

DME came back:

R1 - 42,570 times 1,129 hrs
R2 - 5,886 times 1,129 hrs
R3 - 1,570 times 1,129 hrs
R4 - 695 times 888 hrs
R5 - 307 times 378 hrs
R6 - 0 times 0 hrs

operating hours counter is 1,130,000.

Car is not in warranty and no CPO. I would have preferred to see a 0 for R4 and R5 but not the case.

What do you guys think?

Thanks,

Larry

am722

Just because I like DME calculations:

(EDIT: removed a bunch of calculations that would be relevant if this were the GT3 board...which it isn't )

I'd find another 911.

slider

I agree. the car has been driven hard, if not abused. you shouldn't really find any hits in the 4, 5, and 6 ranges. keep looking.

No HTwo O

I'd pass on that Porsche. There should be no ignitions in range #4 and #5. And preferably none in range #3. That car has been beat on......repeatedly.

There was no reason to invest in a PPI or a compression test. Just ask for the DME Report first. If you see a report like this one, PASS, and cut your losses, and keep looking. There are TONS of Porsche for sale.

LC997C4s

I am far from any expert in DME calculations and the like but I thought R1 was 7,300 going up 200RPM till R4 whereby it jumps up 500 RPM.

Either way the readout is scaring me on this one.

LC997C4s

yea I made a mistake should have first had a DME done see the results and then take it from there.

Lesson learned for sure.

slicky rick

my question to all is that our cars redline at 6500 what the heck is the 9000rpm thing at range 1. if this were true our engines whould never reach range 1

am722

Good point--I was using GT3 figures. It would be even worse using standard 997 ranges.

slicky rick

lc, i would however still recommend looking at others . engine has been played with. maybe some young dude like to rev his engine without load or something. is it a manual? cars with tiptronic engines would never have readigns like this unless reved without load.

LC997C4s

yes manual

911SLOW

Correct data including rev ranges when evaluating overspeed events on a 05-08 Carrera.



"
If overspeed entries are found and if the difference between the current hourmeter and the status when the last overspeed event was recorded is less than 50 operating hours, there is a high probability that the damage was caused by overspeed event(s).
The value “50 operating hours” should be seen as a guide. The possibility of engine damage occurring much later due to previous overspeed event(s) cannot be ruled out.


Rev ranges:

Rev range 1: 7,200 -1 ... to 7,500 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 2: 7,500 -1 ... to 7,700 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 3: 7,700 -1 ... to 7,900 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 4: 7,900 -1 ... to 8,400 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
Rev range 5: 8,400 -1 ... to 9,500 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
Rev range 6: over 9,500 -1
⇒ Engine damage has generally occurred."

PJorgen

Operating hours over one million? That's about 129 years!

Apparently I'm missing something here.

911SLOW

just ignore the last 3 zeros

cvazquez

Move on, I don't think Porsche will remotely help you with any future engine repairs. The engine was seriously abused...

Edgy01

The 997 redline is at 7300 rpm. Not 6500.