IMS Bearing Check At Service

[Macan360]

Thanks Buddy and Spudweiser Great to here your opinions and advice. Being an engineer I am aware of issues of racing a cold engine not previously herd about engine damage caused by underevving except while running in although I understand what you say. Are you suggesting that evening when coasting along revs should always be above 2000RPM One of the things I find hard to get used to is that it always seem to sound like its reving higher than it actually is. Also as our other vehicle is a high performance diesel that doesn't require revving it is abit alien at present. Thanks

 

[Buddy]

When the engine is cold the oil is thicker ( even Mobil 1 ) when it gets hot as normal with all engines which use mechanical oil pumps the oil pressure will drop at low engine speeds, in the Porsches I've had they usually got above 4 bar by the time they pass 2K. The lower cylinder oil jets apparently spray oil once they are above 1.8 bar and so if the engine is not heavily loaded below 2K then the cylinders should be well lubed before the pistons come under heavy load. It may not stop the possibility of scoring but it will give some measure of protection from it. It's never a good thing to labour an engine even when hot, I always warm up between 2 & 3K then once warmed, use the range. If you experienced driving a performance car with carburetors then you would have found that driving to the rev counter is second nature as most had little pull below 3K and ran out by 6K so to drive from 2K up to 7K is a wide power band anyway. Also I find that it is better for fuel economy to keep above 2K even though in town I tend to be in a lower gear but the throttle is hardly loaded and I can pull out of the way easier. The Cayman has a six cylinder engine and yes it will sound as if it's running faster than a 4 cylinder, a little strange at first when you first get into driving one but you soon get used to it. Enjoy the CS [][][]

 

[Macan360]

Thanks Buddy My car is garaged at night which means I reverse out slowly at fairly low revs then I turn it off when its on the drive while shutting the door. My drive being on a slope rear faceing down hill probably doesn't help the cold start oil burn. What I noticed was that i reversed it out down the drive abot 30 feet and stopped then washed the car. Then I moved back towards the garage uphill into its normal space on the drive but still on the slope. Then after an hour went out in it, it was then the smoke appeared as a cloud behind the car. Not seen it when starting from the garage which is flat or at any other time. Trevor (Cayman295)

 

[Spudwiser]

ORIGINAL: Cayman295 Thanks Buddy My car is garaged at night which means I reverse out slowly at fairly low revs then I turn it off when its on the drive while shutting the door. My drive being on a slope rear faceing down hill probably doesn't help the cold start oil burn. What I noticed was that i reversed it out down the drive abot 30 feet and stopped then washed the car. Then I moved back towards the garage uphill into its normal space on the drive but still on the slope. Then after an hour went out in it, it was then the smoke appeared as a cloud behind the car. Not seen it when starting from the garage which is flat or at any other time. Trevor (Cayman295)

I used to do that ie back out, switch it off then start up again and get smoke. I was told it was fuel in the Cat being burnt off and is perfectly normal when its cold. When its hot it wont do it. Had exactly the same with my old Civic Type R's EP3 and FN2. I also read that the Cat can become saturated with fuel and it may not start again for up to 12 hours. My old FN2 sat on the drive for over 3 hrs once before it would start again whilst I waited for the fuel to evaporate ! Needless to say I leave the CS running now when I back out. Fortunately I live in a safe quiet area and there is no risk of anyone jumping in whilst I shut the garage door ! Buddy advised me to get an electric door opener - still not got round to that yet ! I can fret for England when it comes to cars so I know what you are going through ! I knew all about my Type R's but hardly nothing about Porsches. You soon pick it up though. Only other tip I would give (thanks again to Buddy) is run it on high octane, preferably V-power. I had owned the car about 3 mths before I read the manual (!!!) and it said the engine was tuned to 98 Ron ! After about 100 miles on 99 Ron you will notice the difference. Apparently the ECU retards the ignition on 95 Ron so you lose power. The Tesco 99 Ron is ok but V-power keeps it clean. I dont do a lot of motorway driving but I noticed I was getting 22.6 mpg on 95 Ron. I now get 25.3 on 99 Ron. Am amazed at the increase which more than covers the increased cost of the fuel so you get max power, max fuel eco and max fun ! And the reassurance that it being kept clean and free from coking (big problem on the Type Rs with cheap fuel) which all cars can be susceptible to. Also a good idea to thrash the nuts off it too on a regular basis as high revs with v-power really clean it out. Only when up to 80 deg on the temp gauge mind you ! Only tip I would add is if you wash the car then run it round the block and stamp the brakes a few times so you get some heat in the disks before garaging else they will be rusty in the morning (high iron content) and it will shorten their life. Dealer told me that one but it really works. Am looking forward to the blast to work tomorrow ! Enjoy yours

 

[Macan360]

Thanks Spudwiser I am useing Tesco 99 Octane remember that one from my Subaru days. I thought the smoke was oil as it was very blue and as the engine is horizontal it was getting into the cylinders via the rear 2. My average since purchase is 25.9 mpg but virtually no motorwar driveing. Short trip to work 6 miles doesn't help either. Subaru only ever did 23mpg Going down the Gower in Wales in 2 weeks virtually all motorway that should improve the mpg maybe What is the Cayman like in bad weather, car is fitted with Bridgestone tyres all round. Just paid insurance on mine that was ok price very reasonable considering. The only thing that is with a Porsche Cayman 295

 

[Spudwiser]

Sorry - just picked this up. Re bad weather comment, I had winter tyres ordered and fitted late oct by OPC Leics on my standard 18'' rims for free. They delivered my summer tyres home for free and repeated the process, you guessed it, for free, mid mar when the summer ones went back on and they delivered my winter ones back home. Great service. Took 45 mins to fit but the tyres cost me £1.1k !!! But OPC will swap them up to 6 times for free and ferry your other set to and from home (they wont store them). Any more than 6 changes and they cant guarantee the integrity of the steel belts. I have to say the grip in the winter tyres was amazing on cold dry, cold wet and icy/snowy roads. We only had 2 days of snow on the ground in Leics this year but the CS got through 8 inches of snow no problem at 25mpg in 2nd gear ! It was awesome. A FWD fiat got stuck on the hill out of my estate and I just glided up it. The look on his face was brilliant ! You really notice the extra grip below 10 deg c. When its sub zero even with black ice it grips. Bizarre thing is the road noise and ride quality was actually better on the Michelin Alpin winter tyres than on my Bridgestone Potenza RE050A summer ones ! The only thing I noticed was I had to corner about 5 to 8 mph slower on dry bends on the winter tyres as the softer rubber flexed more on the sidewalls. When I swapped back to the summer tyres I missed the winter ones for about 2 weeks ! My winter tyres did about 2.7k miles and lost 0.8 mm of tread all round. I thought they would be half worn down as I drive hard but not a bit of it. If you have 18'' wheels then my advice is get some winter tyres and just swap them. If you are running 19'' then you will need 18'' rims too as I was told by OPC the max size for winter tyres is 18. Rims and tyres would be >£2k and may not be worth it for some. You can buy the tyres cheaper than the £1.1k I paid from Event or Black Circles but then OPC will charge for fitting and balancing and ferrying your tyres around. If you do the sums and include the hassle factor, you are better off ordering via the OPC hence why I did. Spotted another comment about high rev sounding engine at low revs. Try listening to a Type R which revs at 4.1k rpm at 80 mph in 6th gear and believe me you wont notice the CS. Having said that I did think it sounded more like 3k in the CS not 2k at 30mph in 4th gear but you soon get used to it and the lovely torque and deep sound when it pulls in a higher gear just over 2k rpm. Only thing that bugs me is there isnt a repeat button for a track on the CD - yes I love CDs and my multi changer - whats an i-pod again......? !!!

 

[Spudwiser]

Please see my comments about snow driving and winter tyres on the IMS bearing post - is sort of related to the bearing post and makes sense if you read it, honest !