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Good evening, So today I got given the good news that my 2007 plate 997.1 C4S is suffering from bore scoring on cylinders 5 & 6. Good news I say? Well, yes - because engine rebuilds are exciting and means I can get it rebuilt to my specification in the knowledge that it (shouldn't!) explode on me without warning. Bit of background on the car - it's a 2007 997.1 C4S, speed yellow with PSE, full RSS control arms/rods, Bilstein B16 Clubsports, AASCO single flywheel, RSS engine mounts and more importantly, yellow seatbelts. Car is worth no more than 24k GBP, but has immense sentimental value to me as it's been a faithful companion to me during some very tough times. So the car stays. And we've done 88k miles together, fueled by Vpower, Red Bull and stale farts. So, I'm trying to ascertain what I should do with the engine rebuild. I had a brilliant conversation with Grant at Hartech (top bloke) who looks to me like the default choice. Hartech to me seem to offer the most comprehensive package and their reputation through word-of-mouth says more than any marketing bod ever will. However I'd be interested to see whether there are any other suggestions as to who might be able to offer me something a little more...special. And by special, I mean more power, more noise and more general antics that buck the basalt-black metallic Porsche boat. I'm aware Jack Raby offers some very interesting rebuilds but sorry mate, you're too far away for me. I'm not looking to go down the forced induction route. I'm not a mechanic but I know full well that forced induction on these delicate engines is a concoction for a serious headache. My criteria for this re-build is as follows: - complete rebuild of all 6 (yes, not just the 2 affected) cylinders with suitable, hard-wearing liners. - Overhaul of IMS, removing as much risk as possible from the likelihood of IMS failure through suitable parts. - car is a street car, not a track car. I'd love a high-revving engine with all the power at 6900rpm and the redline at 7k, but it's not practical all the time. - no forced induction shenanigans. I'd love a 9E monster but not in my budget! - budget - depends on what i'm getting. 12-15k target, will stretch to 20k if it's really something special. - Loud - I appreciate this is more exhaust related than engine. Suggestions welcome. Currently has PSE, it's ok but I think it could be louder. Thanks for reading this and look forward to hearing your suggestions!
Hello! First post here. hoping someone here might be able to brighten up my day. My 2007 9974S manual has a list of problems that I'm going to attempt to solve myself. This is due to some serious cash-flow problems (2 and a half years of unemployment, go figure :| ). Currently, I seem to have 3 faults with my vehicle. Please note my knowledge of Porsche mechanical engineering isn't good but I'm confident I can learn on the job very quickly (it's in my nature). Brief car history: Ex demonstrator (sigh), owned for 4 years. bought directly from OPC and has always been maintained by them. Car has spent roughly 18 months standing, prior to March 2010, and then another 6 months standing from April to August this year with battery disconnected. No warranty of the vehicle, since I was under the impression Porsches are bulletproof. Internet proved me wrong. Car is driven. I did not spend a large amount of money in order to drive everywhere sedately. Although it certainly isn't 'ragged' it is not driven everywhere slowly. Car currently uses mobile 1. Will be changing oil as soon as I can to something that is thicker, maybe 5W40 or something similar. Radiator Fans: I've noticed my oil temperature has been creeping up to 100c after hard driving (sometimes beyond 110) and there's been no sound of the monstrous fans spinning at any point. I've also not noticed the engine fan (is this coolant related, or airflow to the engine?) hasn't been spinning either. Engine temperature doesn't exceed standard operating temperature. I suspect it might be a switch possibly, or debris. I'm going to attempt to strip the front bumper off this weekend with the aim of attempting to get at the radiator fans to either clean them out or replace them as necessary. However if it's the 'switch', I don't have a clue where to start. Drive Belt I'm not sure if I'm suffering from paranoia here, but one of the belts at the back of the engine seems to be rattling. It is not the belt that drivers the alternator, rather the one immediately the right of it and below the main air intake. I will post a video tomorrow (it's late here in the UK, therefore starting the car up is a no-no). It isn't rattling the the point where it seems it's about to fall off, but I'm fairly confident it's making more noise than it used to. This has left me wondering whether my flywheel is either bent or on it's way out. I've noticed at times first gear has been difficult (not sure if this is related). I've not driven the car hard since this apparent rattle started, but it has felt to me occasionally that power delivery is ever so slightly hesitant Ticking Sound The noise is coming from the driver's rear wheel (car is right hand drive). It is only noticeable at idle and is not present (not that I can hear of anyway) once in motion. Please note i have an unplugged Sports exhaust system so I cannot honestly hear anything other than the roar from the engine. Oil consumption has been completely normal. Originally was concerned since left-side exhaust was sooty, turns out that the car was over filled with oil. Since cleaning the cars exhaust and driving another 1000 miles in it, I have not noticed any soot returning on the left hand exhaust nor has there been any increase in oil consumption. The car has also not been smoking excessively. I'm not sure this rules out Bore scoring failure, but better to be safe than sorry. I am honestly complete unsure of what to make of it. From doing my reading, I was wondering whether it might be hydraulic lifters on their way out? Not quite sure if they make a ticking sound however. I've always maintained the car to the highest service standard possible, and whilst the paintwork is less than showroom standard (chips etc) I would be devastated if my current only means of transport died on me leaving me requiring an outlay of the best part of £10k for a new engine. Any help would be much appreciated.