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Old 04-17-2014, 11:24 AM   #1
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Join Date: Apr 2014
Location: Manchester, UK
Posts: 16
LN IMS Bearing installed - Revolution Porsche UK

Hey all,

Was on here a while ago, having suffered a range of issues with the car, not least a rather large thwack sound from the engine/trans area followed by a loss of power in gear, as well as a persistent dodgy idle and rough running at higher revs etc

(it drove pretty OK after the bang, which was almost more puzzling than the incident itself.. see here: http://986forum.com/forums/general-discussions/51541-loud-bang-help-please.html)

My 986S is now 103k miles young, so felt it best for a clutch and flywheel change (hoping that this might be one of the causes, if not THE cause of the bang incident

Having gotten pretty fed up with another specialist that I won't name publicly (I'm not really into throwing muck around) I spotted Revolution Porsche (based in Brighouse, Yorkshire) on Google and gave them a whirl. The fact they are doing clutch jobs for sub 500 definitely made the conversation a little easier so down the 62 I went to Yorkshire..

Engine and tranny out.. So yeah, in my slight desperation to find a speed yellow S with black leather, it looks like I bought a bit of a pup But for the first time in the 15 months that I've owned the car (and consider the fact that I had the car looked after and major serviced by another specialist firm..) I feel like the car (and me) is being looked after for the first time. It's actually really refreshing.

A bunch of stuff was wrong with the car..

- oil leak from RMS (which had already previously been loosely identified - although I hadn't discounted idea that it might actually be an IMS leak)

- oil leak from IMS (see, told you) - also play from the IMS too

- oil leak from diff seal

- knackered flywheel

- fairly knackered clutch (it looked like something had compromised the clutch as the disc had become scored/ridged somehow.. was this the bang?)

- knackered CV boots

- knackered O2 sensor (again the last place almost refused to change this, even though I suspected it might have been causing the bad idle)

A pretty frightening list of stuff, but it's a case of much rather know than not know and keep driving into the horizon presuming everything is AOK....

Due to the IMS looking like I'd got to Revolution with about 1/2 a mile of pre-explosion time in it, I went for the LN bearing on top of the clutch and flywheel. A fairly enormous bill, yes, but it could have been much bigger, and you can't really put a price on knowing your Porsche is running as it should be.

Just wanted to recommend Russ and all the staff at Revolution. My car was on the ramp for quite a bit longer than anticipated and there wasn't one hint of brusqueness, just a bunch of patience, clear advice and hard work from people who know their shiz!

I'll keep this thread updated with news on the bearing and everything else, as and when. Off to Edinburgh at the weekend. I have a date with the A7

Last edited by G051999; 04-17-2014 at 11:27 AM.
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Old 04-17-2014, 07:28 PM   #2
Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,424
So, the engine had an issue and was then retrofitted with the LN IMSB as a reactionary fitment? Was their any loss of debris from your prior IMSB?
Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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