04-12-2017, 11:11 AM
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#1
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Registered User
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 978
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IMS replacement. Well I messed it up again.
I just finished my 2nd IMS job on my car and just after I bolted the transmission up it occurred to me I didn't install the o-ring on he IMS shaft  Kind of one of those points where you just abandon the project altogether in frustration but I have a track day next weekend so it needs to get back on the road. The missing o-ring won't harm the IMS bearing but will cause it to leak if it can sneak past the bearing shaft, and cover, and shaft nut. I'm seriously considering just saying fck it and running the car. What do you guys think is this a clutch compromising leak or a weeping leak I'm looking at. Between clutch replacement, IMS, rms, and input shaft replacement I've had this transmission out more times than I can count.
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1997 Boxster 4.2L Audi V8 Bi-Turbo
2003 911 C2
NASA HPDE Instructor
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04-12-2017, 03:19 PM
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#2
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,530
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You do run the risk of a major oil leak without the O-ring on the center bolt.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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04-12-2017, 06:03 PM
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#3
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Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
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Oh man, I can totally see myself in your position! One thing for sure is that if you fix it, you will feel much, much better!
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James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow! 
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
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04-12-2017, 07:07 PM
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#4
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Registered User
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 978
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I decided to take it all back apart and of course feel good about it. There are so many ways to screw up an IMS job.
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1997 Boxster 4.2L Audi V8 Bi-Turbo
2003 911 C2
NASA HPDE Instructor
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04-12-2017, 07:14 PM
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#5
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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Quote:
Originally Posted by truegearhead
I decided to take it all back apart and of course feel good about it. There are so many ways to screw up an IMS job.
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I recently pulled the airbox out of my car to re foam it. After I had the dash in and was nearly finished with re-assembly I realized I had put a damper door in backwards inside the airbox.  I had the same thoughts, and made the same decisions you did.
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2003 S manual
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04-12-2017, 07:17 PM
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#6
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Motorist & Coffee Drinker
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,877
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Quote:
Originally Posted by truegearhead
I decided to take it all back apart and of course feel good about it. There are so many ways to screw up an IMS job.
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I didn't want to say anything earlier because I've been there and know the feeling.
It can take a moment. ...a few moments, to get ready to face it all again.
Good decision.
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I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
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04-12-2017, 07:36 PM
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#7
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Registered User
Join Date: Jan 2017
Location: Edmonton,Alberta
Posts: 288
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I've seen worse like the guy who rebuilt his 993 engine and forgot to install the rod bearings and ran the engine. True story.
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'58 356A coupe, just a driver
'00 Boxster S fair weather - daily driver
'11 Jeep Grand Cherokee Limited - winter daily driver
'92 F250 - junk hauler; previous Porsches '95 993;'08 Cayman S;'70 911E
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04-12-2017, 09:54 PM
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#8
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Racer Boy
Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
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Quote:
Originally Posted by 356Guy
I've seen worse like the guy who rebuilt his 993 engine and forgot to install the rod bearings and ran the engine. True story. 
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I bet that had a real knocking noise!
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04-13-2017, 05:31 AM
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#9
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Registered User
Join Date: Sep 2012
Location: S. New Jersey
Posts: 1,239
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Good call putting back right.
I have been there, not with as complicated of a job but that feeling.
Patting your self on the back, big grin on a job well done.
Looking around and then that incredible sinking feeling when you spot that one piece, the first one to be installed, sitting in the corner.
Then there is that calm before the storm
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2002 S - old school third pedal
Seal Grey
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04-13-2017, 06:15 AM
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#10
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Registered User
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 978
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Quote:
Originally Posted by kk2002s
Good call putting back right.
I have been there, not with as complicated of a job but that feeling.
Patting your self on the back, big grin on a job well done.
Looking around and then that incredible sinking feeling when you spot that one piece, the first one to be installed, sitting in the corner.
Then there is that calm before the storm
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I almost did it all over again. After I installed the o-ring and reassembled everything I spotted the clip that holds the bearing in laying on my hood. I Completely panicked. Then I realized the kit came with a new one and luckily had photos of the install the verify. So glad to have this all behind me. The old bearing by the way looked great, it's been in since 2012, has been around 40,000 miles and seen dozens of track days
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1997 Boxster 4.2L Audi V8 Bi-Turbo
2003 911 C2
NASA HPDE Instructor
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04-13-2017, 07:30 AM
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#11
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,797
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Klipstein's Laws as part of Murphy's law
349. After an access cover has been secured by 16 hold-down screws, it will be discovered that the gasket has been omitted.
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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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04-14-2017, 05:10 AM
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#12
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Registered User
Join Date: Dec 2016
Location: Clifton, NJ
Posts: 1,135
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Quote:
Originally Posted by 356Guy
I've seen worse like the guy who rebuilt his 993 engine and forgot to install the rod bearings and ran the engine. True story. 
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that was a painful read.
Agree, it always sucks when you have to redo something. I usually just call it a day and address it the next day. bonus is that it typically goes much quicker the second time.
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