Help with interpreting rev ranges?
Help with interpreting rev ranges?
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Discussion

SteveM46

Original Poster:

303 posts

190 months

Friday 15th July 2011
quotequote all
OPC have just informed me that the used 997 I am collecting tomorrow has been into rev range 4, which prompted them to do a full cylinder compression check before taking it into stock. it checked out fine. His view was that it was likely to have been caused by a missed gear.

They also explained that at 3 or below they wouldn't even bother to check, while at 5 or 6 they would expect to find damage.

Should I be at all concerned about the reading of 4? Two year OPC warranty etc etc??

Edited by SteveM46 on Friday 15th July 11:55


Edited by SteveM46 on Friday 15th July 17:13

dibblecorse

7,659 posts

223 months

Friday 15th July 2011
quotequote all
Not if they are accepting it onto the OPC Warranty, they have checked for related issues and found none,car has a clean bill of health and fair play to them for the openness.

sportsandclassic

3,774 posts

249 months

Friday 15th July 2011
quotequote all
Hi,

Get a printout of it with date that it was printed. I would also get a letter confirming that Porsche have accepted that all is well and the engine is covered under their warranty. Just to be on the safe side.

I would not collect the vehicle until I had that documentation.

Mike

SteveM46

Original Poster:

303 posts

190 months

Friday 15th July 2011
quotequote all
sportsandclassic said:
Hi,

Get a printout of it with date that it was printed. I would also get a letter confirming that Porsche have accepted that all is well and the engine is covered under their warranty. Just to be on the safe side.

I would not collect the vehicle until I had that documentation.

Mike
Thanks Mike. OPC have confirmed verbally that it will be fully warranted, I will double check tomorrow and make sure they haven't slipped in any exclusion as a result of what they've found. Apparently the OPC have spent £5,500 (cost to them) in prepping the vehicle, and I hope they wouldn't have spent that much if they weren't 100% happy with the car.

Nano2nd

3,426 posts

287 months

Friday 15th July 2011
quotequote all
sportsandclassic said:
Hi,

Get a printout of it with date that it was printed. I would also get a letter confirming that Porsche have accepted that all is well and the engine is covered under their warranty. Just to be on the safe side.

I would not collect the vehicle until I had that documentation.

Mike
This ^ if you end up taking it to another OPC they might not be so accomodating without any proof

GT Glee

705 posts

206 months

Friday 15th July 2011
quotequote all
I don't know this but another PH'er might.. Is a compression check the be all and end all of determining overrev damage?

nsm3

2,831 posts

227 months

Friday 15th July 2011
quotequote all
This is interesting, as my OPC told me they don't touch cars with any over-revs, so not a uniform response across the network?

Deffo get the dated printout, written confirmation that the spike has been accepted and you are covered, as in 2 years you may still have the car and want to renew the warranty?

Tino

1,948 posts

314 months

Friday 15th July 2011
quotequote all
with range 4, there should also be range 3 overrevs. If there aren't, it could be an electrical fault
http://pistonheads.com/gassing/topic.asp?h=0&t... over-rev warnings – advice, please!

Wills2

29,840 posts

206 months

Friday 15th July 2011
quotequote all

A rev range of 4, that appears to be 7900-8400rpm? I wouldn't buy it, there are so many cars available I would move on.

sidicks

25,218 posts

252 months

Friday 15th July 2011
quotequote all
Wills2 said:
A rev range of 4, that appears to be 7900-8400rpm? I wouldn't buy it, there are so many cars available I would move on.
As per my thread (linked above), it would depend on the number of ignitions in rev range 4. A low number likely means a computer glitch, tens or hundreds of ignitions and I'd steer well clear!
smile
Sidicks

Diesel130

1,549 posts

243 months

Friday 15th July 2011
quotequote all
Whatever the reason, damage or no damage, warranty or no warranty, it'll be a bu66er to sell, come resale. I wouldn't buy it from you!

Soovy

35,829 posts

302 months

Friday 15th July 2011
quotequote all
sportsandclassic said:
Hi,

Get a printout of it with date that it was printed. I would also get a letter confirming that Porsche have accepted that all is well and the engine is covered under their warranty. Just to be on the safe side.

I would not collect the vehicle until I had that documentation.

Mike
1000% this.

If the engine goes bang, you need this in writing, as it's NOT the OPC which issues the warranty, it's an insurance company, and the OPC have NO RIGHT to amend the contract between you and the insurance company.

You need a written letter of indemnity from OPC.


SteveM46

Original Poster:

303 posts

190 months

Friday 15th July 2011
quotequote all
Folks

I've had a chat with one of the most respected indies in the business who was kind enough to speak to me about is, and he was clear that this would not be an issue in taking the car on for resale, especially if 100 operating hours had passed since the last 'incident', after which the risk of a consequential failure is miniscule.

OPC have raised the bar on these issues recently, which is why rev range 4 is now checked out as part of the 111 point check; until recently it wasn't considered worthy of concern.

Anyway, I am satisfied, I will have my two year OPC warranty, and I can't wait to get my hands on the car in the morning! Watch out tomorrow on the M25/M1 for a black 997 and a driver with a very big grin!

biggrin


Soovy

35,829 posts

302 months

Friday 15th July 2011
quotequote all
SteveM46 said:
Folks

I've had a chat with one of the most respected indies in the business who was kind enough to speak to me about is, and he was clear that this would not be an issue in taking the car on for resale, especially if 100 operating hours had passed since the last 'incident', after which the risk of a consequential failure is miniscule.

OPC have raised the bar on these issues recently, which is why rev range 4 is now checked out as part of the 111 point check; until recently it wasn't considered worthy of concern.

Anyway, I am satisfied, I will have my two year OPC warranty, and I can't wait to get my hands on the car in the morning! Watch out tomorrow on the M25/M1 for a black 997 and a driver with a very big grin!

biggrin
I wouldn't buy it.

No chance.

Ask the fellow on here whose Turbo engine popped a while after some dipstick over revved it on a track day.



sportsandclassic

3,774 posts

249 months

Friday 15th July 2011
quotequote all
SteveM46 said:
Folks

I've had a chat with one of the most respected indies in the business who was kind enough to speak to me about is, and he was clear that this would not be an issue in taking the car on for resale, especially if 100 operating hours had passed since the last 'incident', after which the risk of a consequential failure is miniscule.

OPC have raised the bar on these issues recently, which is why rev range 4 is now checked out as part of the 111 point check; until recently it wasn't considered worthy of concern.

Anyway, I am satisfied, I will have my two year OPC warranty, and I can't wait to get my hands on the car in the morning! Watch out tomorrow on the M25/M1 for a black 997 and a driver with a very big grin!

biggrin
That was not what you orinally asked, you never mentioned buying the car back for re-sale... that has nothing to do with your OPC warranty question...?

So when it does go bang, at least you can get the indy to explain to Porsche why you deserve the warranty... Cover your ASS !

Mike

anonymous-user

85 months

Friday 15th July 2011
quotequote all
Diesel130 said:
Whatever the reason, damage or no damage, warranty or no warranty, it'll be a bu66er to sell, come resale. I wouldn't buy it from you!
Exactly. You have recourse potentially but the guy buying from your doesn't. I'd get another that has not been over revved no matter how much in love you are!

Diesel130

1,549 posts

243 months

Friday 15th July 2011
quotequote all
SteveM46 said:
Folks

... OPC have raised the bar on these issues recently, which is why rev range 4 is now checked out as part of the 111 point check; until recently it wasn't considered worthy of concern.
...
I thought a general check was made of _any_ overrevs and the customer advised of all levels - that's what happened when I had mine done, albeit a few years ago now. I can't see the likes of Henry or Joel being happy to buy in a car that's being overreved - however long ago in the past - when you come to sell it. Those sort of dealers pride themselves on the providence of the cars they sell, as you can tell by their adverts and comments on here. Beware.

Diesel130

1,549 posts

243 months

Friday 15th July 2011
quotequote all
and another thing... you say
SteveM46 said:
OPC have just informed me that the used 997 I am collecting tomorrow has been into rev range 4, which prompted them to do a full cylinder compression check before taking it into stock.
That's a bit late in the day, isn't it? Nice of them not to tell you sooner, especially if they knew that when they took it in. Suppose the OPC wants to leave it to the last minute so you don't change your mind.... I smell a rat.

dazren

22,612 posts

292 months

Friday 15th July 2011
quotequote all
Soovy said:
Ask the fellow on here whose Turbo engine popped a while after some dipstick over revved it on a track day.
Afternoon gents. Guessing you're referring to my car soovy. Less than 1/10 of a second overrev activity in 8 years/55k miles and the timing chain went 40 hours after the over rev incident. A bit of maths puts the overrev incident back to a VMAX airfield day when six other people drove the car whilst I was driving their cars. A few months later I found out my car was seen spinning that day. I had to pay for an engine from Porsche which they discounted by 20% and my OPC did me a discounted labour rate. Still cost me the wrong side of £20k though. Full details in my profile.

To the OP. I'd walk away, would not pass go, would not put down a £200 deposit! Get a car which is overrev clear or when you come to resell the car too many people will walk away.

Soovy

35,829 posts

302 months

Friday 15th July 2011
quotequote all
dazren said:
Soovy said:
Ask the fellow on here whose Turbo engine popped a while after some dipstick over revved it on a track day.
Afternoon gents. Guessing you're referring to my car soovy. Less than 1/10 of a second overrev activity in 8 years/55k miles and the timing chain went 40 hours after the over rev incident. A bit of maths puts the overrev incident back to a VMAX airfield day when six other people drove the car whilst I was driving their cars. A few months later I found out my car was seen spinning that day. I had to pay for an engine from Porsche which they discounted by 20% and my OPC did me a discounted labour rate. Still cost me the wrong side of £20k though. Full details in my profile.

To the OP. I'd walk away, would not pass go, would not put down a £200 deposit! Get a car which is overrev clear or when you come to resell the car too many people will walk away.
Sorry Daz, mental block!!

Yeah. 40 hours later. £20k damage.

OP - WALK AWAY. NO, RUN.