View Poll Results: Poll: Have you had bore scoring on your 997.1 or 997.2 engine?
Yes, 997.1 (05-08 MY)
143
14.50%
Yes, 997.2 (09-12 MY)
18
1.83%
No, 997.1 (05-08 MY)
524
53.14%
No, 997.2 (09-12 MY)
301
30.53%
Voters: 986. You may not vote on this poll
Poll: Scored cylinder failure for your 997, Y or N? tell us (yr, 997.1 or 997.2)
05-28-2019, 03:27 AM
#226
Hi I am a new user.
05 C2S 3.8 70k miles on. IMS was already done with a solid bearing getting oil from the oil filter.
Bought it first week of this year and it start ticking 1k miles later. Drove another 500 miles and pulled the motor. #4 was badly and 6 just one deep line in. Waiting now on the re-sleeve from L&N with an upgrade to a 4.0.
Im looking for a workshop manual with all the engine info if anyone can help point me in the right direction please.
Thanks
Phillip
05 C2S 3.8 70k miles on. IMS was already done with a solid bearing getting oil from the oil filter.
Bought it first week of this year and it start ticking 1k miles later. Drove another 500 miles and pulled the motor. #4 was badly and 6 just one deep line in. Waiting now on the re-sleeve from L&N with an upgrade to a 4.0.
Im looking for a workshop manual with all the engine info if anyone can help point me in the right direction please.
Thanks
Phillip
05-28-2019, 04:23 AM
#227
Hey Phillip, I have the 997 / 2005-2008 Workshop Manual, 997 / 2005-2008 Supplements and the 997.2 / 2009-2011 Workshop Manual on CD. Would you like a copy ?
(billh3508@charter.net) or respond here. Bill Hora Montgomery, AL
(billh3508@charter.net) or respond here. Bill Hora Montgomery, AL
The following users liked this post:
tapcon (08-01-2019)
05-28-2019, 12:03 PM
#232
The 2005-2008 shop manual I have does not have much detail on engine assembly, but I don’t have the supplements. Do the supplements go into more engine build detail? If so I would like to get a copy also if you are willing.
05-28-2019, 12:55 PM
#233
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Billy thankyou for your help. I do believe the detail is in the supplements. i have a copy of a workshop manual and it looks like a sales brochure with no technical info.
I will keep on looking and anything I find I will post here and make sure you get it too.
I have seen a post where someone have collected the torque specs on every bold on the 997.1 and have put it in a booklet. i'm still trying to find it again.
Phillip.
I will keep on looking and anything I find I will post here and make sure you get it too.
I have seen a post where someone have collected the torque specs on every bold on the 997.1 and have put it in a booklet. i'm still trying to find it again.
Phillip.
05-28-2019, 03:07 PM
#234
Billy thankyou for your help. I do believe the detail is in the supplements. i have a copy of a workshop manual and it looks like a sales brochure with no technical info.
I will keep on looking and anything I find I will post here and make sure you get it too.
I have seen a post where someone have collected the torque specs on every bold on the 997.1 and have put it in a booklet. i'm still trying to find it again.
Phillip.
I will keep on looking and anything I find I will post here and make sure you get it too.
I have seen a post where someone have collected the torque specs on every bold on the 997.1 and have put it in a booklet. i'm still trying to find it again.
Phillip.
Last edited by Billy Hora; 05-28-2019 at 06:44 PM.
05-28-2019, 03:18 PM
#235
997 Comprehensive Service manuals.
The Service Manuals that I have on CD have disassembly and reassembly detailed instructions with specs, parts lists, wiring diagrams and more. 5200 pages total.
Last edited by Billy Hora; 05-28-2019 at 06:43 PM. Reason: Amend
05-31-2019, 07:51 AM
#237
Service manuals
Hey Phillip, I will send the CD today and follow up with a tracking number for you. I drafted a longer reply with detailed info on the contents, however it somehow vanished as I attempted to hit reply. Please set your control panel settings to allow personal private messages from me. I prefer to keep this conversation out of the forum thread. Best regards from The Land of Hospitality....Billy.
08-02-2019, 07:54 PM
#238
AutoX
Join Date: Jun 2019
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The information I got from my local(ish) Independent Porsche specialist was this:
996, 3.4L - "It's a matter of when not if"
997 3.6L - 5% suffer from bore scoring
997 3.8L - Around 12%.
So, I think there should be a poll for each model and each engine size.
I had a bore scope done prior to purchase and there are only the very slightest signs of scoring. I went ahead and bought it nonetheless. My car has done 53k. I've had it for 1K. It's a 2006 tip MK1 C2.
One recommendation was to change the oil regularly if you are doing lots of short journeys and not to rev over 4k until the oil is up to temp. Although service intervals are every 2 years, I was advised to change once a year. I will (partly experiment, partly paranoia) change my oil in autumn and spring and see what long term effect that has.
If you live in an area with colder winters, a heated garage is preferable so that the disparity in oil temperature before warming up to optimum is less. .
But... what I gather is that it can occur, despite diligent measures, at around the 20k mark* and cars can go on way over 100k with no problems whatsoever.
The left bank (thrust side) exhaust outlet is an indicator though (people wise to this clean and polish it before sale) but you may hear a ticking noise with the engine idling.
*I've heard this regarding Boxsters but not 996/887's. Thankfully.
I really hope I get at least another 40k out of mine before I have to start worrying about failure and... i'll put some cash away somewhere to cover an engine rebuild/swap. £6k for a 3.6 in the UK, £12k for a 3.8.
Cross fingers.
If you are thinking of buying one - GET a Pre inspection and bore scope. Mine cost £270 including vat ($330). Worth every penny/cent.
996, 3.4L - "It's a matter of when not if"
997 3.6L - 5% suffer from bore scoring
997 3.8L - Around 12%.
So, I think there should be a poll for each model and each engine size.
I had a bore scope done prior to purchase and there are only the very slightest signs of scoring. I went ahead and bought it nonetheless. My car has done 53k. I've had it for 1K. It's a 2006 tip MK1 C2.
One recommendation was to change the oil regularly if you are doing lots of short journeys and not to rev over 4k until the oil is up to temp. Although service intervals are every 2 years, I was advised to change once a year. I will (partly experiment, partly paranoia) change my oil in autumn and spring and see what long term effect that has.
If you live in an area with colder winters, a heated garage is preferable so that the disparity in oil temperature before warming up to optimum is less. .
But... what I gather is that it can occur, despite diligent measures, at around the 20k mark* and cars can go on way over 100k with no problems whatsoever.
The left bank (thrust side) exhaust outlet is an indicator though (people wise to this clean and polish it before sale) but you may hear a ticking noise with the engine idling.
*I've heard this regarding Boxsters but not 996/887's. Thankfully.
I really hope I get at least another 40k out of mine before I have to start worrying about failure and... i'll put some cash away somewhere to cover an engine rebuild/swap. £6k for a 3.6 in the UK, £12k for a 3.8.
Cross fingers.
If you are thinking of buying one - GET a Pre inspection and bore scope. Mine cost £270 including vat ($330). Worth every penny/cent.
08-27-2019, 05:51 PM
#239
Rennlist Member
[QUOTE=Robert Day;16015203]The information I got from my local(ish) Independent Porsche specialist was this:
996, 3.4L - "It's a matter of when not if"
997 3.6L - 5% suffer from bore scoring
997 3.8L - Around 12%.
QUOTE]
Greetings Robert, may I ask where your specialist got his figures ??? and/or did he share that info ???
Reason for asking is that I was on a famous European (French) tuner/indy website today and came upon an article where they promote their ims solutions and bore scoring rebuilds.
It's a pretty long article where they discuss the what, why and where of both subjects. In that article they pretty much say exactly what the reputable indy in Montreal that performed my PPi said.... 997.1 from 2006 have basically no ims failures (except due to tracking and poor maintenance they even use the word ''negligence'' which means ''neglect'') and that the internet blew that subject way out of proportion.
On bore scoring, they say that it is exclusive to the 3.8 S engine's left bank and that 3.6 do not have that problem. I realize that Europe (France) winters are nowhere close to as cold as America/Canada that could kind of explain Bore Scoring numbers over here maybe, dunno ….,but your 5% has me questionning it. Especially compared to the non-existant term that they used.
996, 3.4L - "It's a matter of when not if"
997 3.6L - 5% suffer from bore scoring
997 3.8L - Around 12%.
QUOTE]
Greetings Robert, may I ask where your specialist got his figures ??? and/or did he share that info ???
Reason for asking is that I was on a famous European (French) tuner/indy website today and came upon an article where they promote their ims solutions and bore scoring rebuilds.
It's a pretty long article where they discuss the what, why and where of both subjects. In that article they pretty much say exactly what the reputable indy in Montreal that performed my PPi said.... 997.1 from 2006 have basically no ims failures (except due to tracking and poor maintenance they even use the word ''negligence'' which means ''neglect'') and that the internet blew that subject way out of proportion.
On bore scoring, they say that it is exclusive to the 3.8 S engine's left bank and that 3.6 do not have that problem. I realize that Europe (France) winters are nowhere close to as cold as America/Canada that could kind of explain Bore Scoring numbers over here maybe, dunno ….,but your 5% has me questionning it. Especially compared to the non-existant term that they used.
08-27-2019, 06:06 PM
#240
Rennlist Member
[QUOTE=Steph1;16065997]
Yes, bore scoring is typically limited to bank 2 (cylinder 4-6), however all 3.4, 3.6, and 3.8 models are equally susceptible to bore scoring. Base models, and the 3.2 Boxster S, don't seem to score. They use a KS cast piston where the other models use a forged Mahle piston. The iron clad coatings are also different between manufacturer of piston, and the KS coating is much more durable. Once the coating fails on the piston skirt, it's all over.
06-08 IMS bearing failures, although rare, do happen. My guess is that it's just a matter of time as the original bearings age, failures will be more common as the bearing exceeds its L10 life.
The information I got from my local(ish) Independent Porsche specialist was this:
996, 3.4L - "It's a matter of when not if"
997 3.6L - 5% suffer from bore scoring
997 3.8L - Around 12%.
QUOTE]
Greetings Robert, may I ask where your specialist got his figures ??? and/or did he share that info ???
Reason for asking is that I was on a famous European (French) tuner/indy website today and came upon an article where they promote their ims solutions and bore scoring rebuilds.
It's a pretty long article where they discuss the what, why and where of both subjects. In that article they pretty much say exactly what the reputable indy in Montreal that performed my PPi said.... 997.1 from 2006 have basically no ims failures (except due to tracking and poor maintenance they even use the word ''negligence'' which means ''neglect'') and that the internet blew that subject way out of proportion.
On bore scoring, they say that it is exclusive to the 3.8 S engine's left bank and that 3.6 do not have that problem. I realize that Europe (France) winters are nowhere close to as cold as America/Canada that could kind of explain Bore Scoring numbers over here maybe, dunno ….,but your 5% has me questionning it. Especially compared to the non-existant term that they used.
996, 3.4L - "It's a matter of when not if"
997 3.6L - 5% suffer from bore scoring
997 3.8L - Around 12%.
QUOTE]
Greetings Robert, may I ask where your specialist got his figures ??? and/or did he share that info ???
Reason for asking is that I was on a famous European (French) tuner/indy website today and came upon an article where they promote their ims solutions and bore scoring rebuilds.
It's a pretty long article where they discuss the what, why and where of both subjects. In that article they pretty much say exactly what the reputable indy in Montreal that performed my PPi said.... 997.1 from 2006 have basically no ims failures (except due to tracking and poor maintenance they even use the word ''negligence'' which means ''neglect'') and that the internet blew that subject way out of proportion.
On bore scoring, they say that it is exclusive to the 3.8 S engine's left bank and that 3.6 do not have that problem. I realize that Europe (France) winters are nowhere close to as cold as America/Canada that could kind of explain Bore Scoring numbers over here maybe, dunno ….,but your 5% has me questionning it. Especially compared to the non-existant term that they used.
06-08 IMS bearing failures, although rare, do happen. My guess is that it's just a matter of time as the original bearings age, failures will be more common as the bearing exceeds its L10 life.