Porsche 911 IMS intermediate shaft bearing
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- Опубліковано 12 вер 2024
- What is the IMS or intermediate bearing, does an oil leak mean your engine is going to blow up, do you need to upgrade the IMS bearing.
Answers from 911virgin the Porsche people in Uxbridge as they guide you through the process of changing the IMS bearing seal on a 997 model Porsche 911.
Great no nonsense video, you're got yourself a new subscriber
Glad you found it useful 🙂
@@911virgin8 I like that you dont hype up the ims issue. Some folk over react. I've had a 996 and 986 over 8 years both high mileage and no issues. I see some advise removing and leaving off the bearing rear seal to allow engine oil to flow around. What do you think about this?
@@vintagesteelgarage It does prevent a localised build up of metal which in turn acts like a grinding paste and also ensures the bearing doesn't dry out. I'm not so sure about the replacement "uprated" bearings which have a limited life and become a service item.
@@911virgin8 yes I agree on the aftermarket ones. At some point I'll take my gearbox out and check the ims.
Thank you for your channel - I have owned a 69 912 (4 yrs) California car, and a 95 C2 (3 yrs) and a 96 C4S (5 yrs) AZ cars, both at the same time for 3 yrs and hung on to the c4s for 2 more...wonderful cars. Will end up with an air cooled next - 07 or so - AZ if possible - dry and clean bodies.
Glad to hear you're enjoying the Porsche journey.
Great video 👍 and very much appreciated as that's exactly the problem I have here with my 987.1 Boxster S here in France.
Off to buy the locking kit now as I have the transmission out.
I have two Twinbusch lifts and rate them highly.
Glad you found it useful. They are indeed a good ramp. Funnily enough just had them serviced / inspected today !
Another great video - informative and to the point. Keep it up guys.
Thanks for the kind words
Really interesting video, are you considering a video regarding bore scoring it would be interesting to have your opinion especially failure rates. Thanks for sharing 👍
Hi there. As mentioned previously it's on the list. Subscribe and watch this space....
Thanks Henry and a worthy clarification for the IMS myths - recently purchased a 2005 997.1 with 88k miles and fitted from factory with the stronger IMS. The other concern with these is bore scoring, would you consider doing a similar video on this topic as it's another with a lot of myth?
Yes, we will definitely tackle bore scoring at some point in the future.
i think if i had gone to the trouble and expense of exposing the IMS bearing, i would have it replaced with either an OEM one or one who's marketing hype had convinced me was superior in some way.
This is a 997 C2S 3.8 M97 motor. It has a revised style of bearing. It's a non serviceable bearing; you would have to disassemble the entire engine and split the crankcase to change it. It is however very reliable, as stated in the video. The IMS bearing on 996 & 997 M96 3.6 motors is certainly less reliable. You are however able to change the M96 item for an aftermarket or 'uprated' bearing by removing the gearbox and flywheel. No full disassembly needed on M96 motor.
Great video, very interesting.
Thanks, glad you found it useful
Good video thanks you
Thanks for taking the time to post.
Very informative. How many hours would a job like that take and is it the same on a tiptronic car?
Hi there. On a manual car it's about 4 to 4.5 hours. A tiptronic still has the same seal but the job is somewhat more involved, it's about 12 hours work. To make best use of the fact you've dropped the engine on a Tip you would check to make sure the brake line that runs over the top of the engine doesn't need changing and I would possibly also think about changing the Oil / Air separator. Sod's law says it will fail a couple of months down the line if you don't do it.
@@911virgin8 v useful a lot of folk don’t appreciate the extra Labour cost associated with the tiptronic model despite the seal and or bearing being the same parts.
My 05 987.1 is Tiptronic bought purely so my wife would drive it on long European trips.
Having just got the box out it's a lot of work.
Not sure yet how I will get it back in on my own.
One question do you leave the seal of the bearing so that it runs in the oil ?
You kinda confused me there. You said the bearing almost never failed but then you said it's not worth putting in one of the modified bearings because they had to be changed every 3 years or so.
It seemed you kept talking softer and softer and I kept turning the volume up more and more but had a hard time hearing you.
I've noticed a lot of tubers rely on the microphone on their cameras but stand to far away from them.
I thought only the 996 had the IMS bearing. You said that is a 997. Also I understand the turbos do not have it at all due to a different engine design. Can you explain the difference? Are the cam chains run directly off the crank on those?
Hi there. With regards to the modified bearings there are a number of solutions but it's not something we generally get involved with. Whenever you change a clutch it's good practice to change the IMS bearing oil seal at the same time (and also the rear main oil seal). This gives you the opportunity to feel the bearing by hand and if there are any issues change it, in the case of early type bearings with the same type of bearing - keep in mind they do last a good long while. The problem really comes with Tiptronic cars because they never get opened up to have a clutch changed and it's 12 hours rather than 4 hours labour to do an IMS oil seal so they tend to get ignored and just wiped clean.
997 and 996 are essentially the same with regards the IMS bearing, the Turbo and GT3 engines do run their cams of an intermediate shaft but the design is quite different.
The video was filmed on a iPhone so audio is what it is. Ultimately we are car dealers not film makers. The day we start charging you and selling you popcorn is the day you can demand improvements :-)
@@911virgin8 Thanks for all the info! I hate popcorn. Lol
Actually, you did a good job of putting the whole IMS thing into perspective. A lot of tubers make it sound like the sky is falling. Lol
Still, the engineers should have stuck with what worked well. The journal bearings.