997.1 buying advice - Bore Scoring?

[mollytherocker]

zulash said:

I know the 997.2 has rectified the IMS issue by no longer having the IM shaft in the engine, but i don't understand how the bore scoring problem has been cured quite happy to be educated though!

It hasnt been cured.

The new DFI engine is of a totally different design that doesnt have the compromised design of the 997.1.

[zulash]

actually i think it's slightly under 5%.... but, hey ho! It's a good job every prospective 997.1 buyer doesn't get their facts from this forum.... they would become unsellable.

[zulash]

thankyou cmoose! i appreciate that info. ... really.

[hygt2]

Wozy68 said:

Matter of interest, just how can a high performance engine like the 911 997 really be abused so badly on UK roads.

There's basically no where to drive them fast without being filmed, to over rev a 911 engine in anything less than third you'd need to be travelling flat out at serious speeds. In the South East there basically is no where to drive at high speed for any serious distance.

Edited by Wozy68 on Monday 23 March 21:23

I think a lot of cars would have a lot of cold starts and not warmed up properly, especially in the South East due to high population density, low average speed and shorter journeys.

I know mine does 4 miles in the morning and 4 miles at night and the oil does not get truly warm even though the car has run for 15-20 minutes.

Also, I suspects bore scoring can also cause by high load at low engine speed, or low speed in high gear and you use the torque to haul you away - such as 15-20 mph in third gear in city and the car will pull as the 3.8 has so much torque. Given the driving patterns I have seen in London, I'm not surprised either.

Lastly, oil becomes sheared with operating hours and 20k oil change intervals are just too long.

Given all the above, I would go for a Turbo or GT series car. Is 997.1 similarly priced to a 996T?

[zulash]

And how much money do Porsche reap in through the continued use of Mobil 1. Even though every independent Porsche specialist will not use it, especially on older engines.

[PR36]

zulash said:

And how much money do Porsche reap in through the continued use of Mobil 1. Even though every independent Porsche specialist will not use it, especially on older engines.

'every' independent? I happen to know of two indies in my area who don't use anything else and they have top notch reputations. I couldn't say if that makes it a good oil or not but i don't think its fair to say no one uses it.

[zulash]

PR36 said:

'every' independent? I happen to know of two indies in my area who don't use anything else and they have top notch reputations. I couldn't say if that makes it a good oil or not but i don't think its fair to say no one uses it.

O.K.... I take that back, before i get in more trouble, but none of the ones i've spoken to use it.

[Arenki]

daily driver - 81,000 miles no IMS or bore scoring. Not yet anyway!

[zulash]

Arenki said:

daily driver - 81,000 miles no IMS or bore scoring. Not yet anyway!

Good man. that's what we like to read. maybe it's because she's a 'daily driver' ..... who knows.

[cheekyone]

billywhizzzzzz said:

Thanks for all replies - sadly I'm near Bristol so Hartech not an easy option. As I'm looking for a keeper and ultimately want a good car, I guess an alternative to an OPC is to get a car with an bore inspection that confirms no scoring but assume over the next 5 years it will need a rebuild, and when it does, get it rebuilt with upgraded components. Either that or wait a year or to and get a post 2009 997 (gen 2) once prices dip below 30k. Or buy one that has had a rebuild to Gen 2 Spec - there's one or two for sale now and these seem to command a reasonable premium understandably.

Be interesting to hear if there are any higher mileage (60k+) 997.1 cars that have no evidence of bore scoring...

Not the first person to hint on this thought - Your budget appears to be in the 911 turbo price bracket & they're currently increasing in value - last of the metzger & all that - If you've not been in one & fancy a spin etc pm me as sounds like I live close to you as I'm based in Bristol : )

[dino_jr]

billywhizzzzzz said:

Ok, so I've finally convinced myself that I need a 991 in my life after a Z4M (although that may stay as I'm attached to it) , and am now looking seriously. However, after years of relatively robust BMWs, I'm a little nervous about the internet scaremongering around 997.1 engines - notably bore scoring and potential expensive rebuilds.

I'm looking at sub 60,000 miles (closer to 50,000 miles, hopefully less) cars - both 3.6 and 3.8 from a variety of sources.

Main questions - how worried about bore scoring should I be? And, will an independent inspection pick it up? Is there genuinely less of an issue with the 3.6?

Many thanks

Car here with Hartech rebuild, plus 55-reg so cheap tax too?
http://www.autoecosse.com/used-cars/573/porsche-91...

[uwotm8]