2nd Gen engines etc

[petop]

In both Cayman 3.4 and 997 models etc, when did Porsche introduce the improved IMS related issue engines?
Wasnt it around 2007 but then i read that in specific models it may of been earlier (2006)?
Looking at a Cayman 3.4s or possibly a 997. But in respect of the year i could lean towards the 997, which is slightly more expensive.
Im away in Afghanistan until Oct so wont be buying until then. Im hoping that some 997's may drop into my budget (£24k), but although some are now they seem to be around the 54-05 reg marks and i think this is pre-improved IMS?
Cheers in advance

[mrdemon]

2009

[98C4S]

They improved for 2007 model year cars, so 56 plate cars or newer will be better, but they can still suffer from the issues.

[98C4S]

They improved for 2007 model year cars, so 56 plate cars or newer will be better, but they can still suffer from the issues.

[RiccardoG]

98C4S said:

They improved for 2007 model year cars, so 56 plate cars or newer will be better, but they can still suffer from the issues.

Some late 06 plate cars (August 2006 mainly) are also 'updated', you can confirm this from the engine number or chassis number.

[knightriderx]

My car is march 2006 and has been confirmed to have the updated IMS by the OPC and from the chassis number.

I'm pretty sure all 2006 cars and even some late 55 plate cars have the updated IMS

[petop]

Cheers for replies. Its what i was thinking.
Cmoose, agree. I have been reading Hartech's latest piece on bore scoring etc.

[mollytherocker]

I believe that the Gen 2 engines were introduced from 2008 (2009 model year). The easiest way to tell is the later lights including the daytime running Audi style sides.

Its still £40k+ for a G2 997.

MTR

Edited by mollytherocker on Sunday 4th March 20:34

[Pugley]

I think the issue will always be that once you get anywhere near the £30K mark there are plenty of good turbos with the Metzger engines to be had. In all honesty the running costs are not much different.

It could be quite a wait for 2nd Gen engine equipped cars to fall to this value. There may even be a price premium if their reliability holds up

Glad its not a decision I have to make!

[mollytherocker]

Pugley said:

It could be quite a wait for 2nd Gen engine equipped cars to fall to this value. There may even be a price premium if their reliability holds up

This is exactly my feeling. I reckon the G2 cars are going to be sought after and hold their value well.

They are after all, the last of the Mk2 911!

MTR

[jdwoodbury]

Is there any information regarding identifying chassis numbers to confirm they run the improved IMS?

[jdwoodbury]

Sorry should have said engine number, anyway a quick google brought up this information from Rennlist regarding which engines had uprated IMS

"To determine if your M97 engine has the improved IMS, you will need to check your engine number.
if the engine number is 68509790 and below, unfortunately it still has the smaller removable IMS bearing.
if the engine number is 68509791 and above, it will have the new large single row IMS. The IMS cover also has the 22mm nut.";

[Captain James T]

To determine if your M97 engine has the improved IMS, you will need to check your engine number.

if the engine number is 68409790 and below, unfortunately it made of marshmallow, with a puff-pastry gearbox casing, chocolate IMS bearing and a papier mache RMS.
if the engine number is 69509790 and below, it is liable to let go at any time in a mass of graunching metal, oil smoke, ball bearings and engine casing.
if the engine number is 69509795 and above, the possibility of sudden self-destruction is less likely but the bores will self-destruct and you'll be left in a cloud of white smoke.

[shoestring7]

2.9l Caymans are available from £25k, and arguably the best bet of all for reliability as they don't have direct fuel injection either.

If might just be all the Porsche you need, certainly I never found my 2.7 wanting on the road.

See if the Hellmand OPC has one you could try.


SS7

[Chunk49]

shoestring7 said:

2.9l Caymans are available from £25k, and arguably the best bet of all for reliability as they don't have direct fuel injection either.
SS7

If I was to guess, I would say the 2.9l Gen 2 engine was likely to be most reliable too. I would be basing that on removed IMS, (better cooling?), not as thick walls at the 3.4/6/8, and a few years more development by Porsche. Are those the reasons why you think the 2.9 would be the best bet? Or are there other reasons?

Thanks.

[mayes911]

dfi engines have been around for 4 years now and i have not read a sniff of trouble across the net.that said i have read of early 2.9 2009 model year engines having problems with rings/bores?
in america they have a boxster/cayman racing series and the new engines dont suffer the problems of the 987.1 ie oil starvation in fast corners etc
so so far so good with the gen 2 engines,its got to be good they put it in the turbo and it may even end up in the 991 gt3 and so then the gt3 race cars?

[mayes911]

the ims was updated for 2006 model year cars circa march 2006.safe bet is a 2007 model year 56 plate onwards.but the scored bore thing is what you have to watch for though.it is said that this is not a problem on the gen 2 block as it is a closed deck design as opposed to an open deck design of the gen 1 cars.

[Chunk49]

mayes911 said:

dfi engines have been around for 4 years now and i have not read a sniff of trouble across the net.that said i have read of early 2.9 2009 model year engines having problems with rings/bores?
in america they have a boxster/cayman racing series and the new engines dont suffer the problems of the 987.1 ie oil starvation in fast corners etc
so so far so good with the gen 2 engines,its got to be good they put it in the turbo and it may even end up in the 991 gt3 and so then the gt3 race cars?

Good to know that they're racing those engines in the US without issues. I imagine racing would be the acid test.

I do think though that the logic "it's got to be good they put it in....X" is a bit flawed though!

[mayes911]

do think though that the logic "it's got to be good they put it in....X" is a bit flawed though!

not really if it can handle 500bhp+ its not going tp go bang anytime soon,hence previous turbo had the famous mezger engine!

[Chunk49]

mayes911 said:

do think though that the logic "it's got to be good they put it in....X" is a bit flawed though!

not really if it can handle 500bhp+ its not going tp go bang anytime soon,hence previous turbo had the famous mezger engine!

Can it handle 500bhp+?