02-10-2014, 11:55 AM
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#221
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Registered User
Join Date: Nov 2013
Location: Arizona
Posts: 90
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Having an oil flow from the pump would be nice. If I were to use engine oil for lubrication, I figure 10cc/min would be enough to keep the bearing in oil, under certain conditions.
I am looking at vacuum powered pumps now.
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It's all bad
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02-10-2014, 04:14 PM
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#222
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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Walter,
What are you doing to that poor engine? It looks a little... experimental.
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2003 S manual
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02-10-2014, 05:01 PM
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#223
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Registered User
Join Date: Nov 2013
Location: Arizona
Posts: 90
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That was a minute ago, now I am back on grease. After playing with bearings over-packed with grease, I found out that they will just poop out the excess grease through the seals within a minute or two and remain perfectly happy. And heat just isn't a problem at the RPMs they will be turning.
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02-14-2014, 08:52 AM
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#224
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Registered User
Join Date: Nov 2013
Location: Arizona
Posts: 90
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Quote:
Originally Posted by Jamesp
Walter,
What are you doing to that poor engine? It looks a little... experimental.
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Here's the latest experiment
Molded seal. I will try it out this weekend, after it fully cures.
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It's all bad
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02-14-2014, 09:02 AM
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#225
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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I decided to spend my time omitting the ball bearing, rather than applying a band aid :-)
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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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02-14-2014, 05:01 PM
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#226
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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What I like about you Walter, is that you work in that kingdom where great ideas come from. I think many may look at your ideas and think , "what the heck?". I know I do, some are downright scary to me, but that's the land where really inventive and great ideas come from. Keep it up!
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2003 S manual
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02-15-2014, 10:05 AM
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#227
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Registered User
Join Date: Nov 2013
Location: Arizona
Posts: 90
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Thanks James. This IMS bearing thing has been fun.
Quote:
Originally Posted by rp17
James, if I'm not mistaken, there is a fixt that sells a oil feed using something similar to what you describe.
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If I were to go this route, this is the way I would want to do it
As I have mentioned, I think 10 cc/min would keep oil flowing out the bearing.
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It's all bad
Last edited by Walter White; 02-15-2014 at 11:08 AM.
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11-13-2014, 10:00 AM
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#228
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Registered User
Join Date: May 2010
Location: uk
Posts: 4
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Can a blanking plate be fitted before inserting the new IMS bearing. this would stop oil getting into IMS shaft and stop air pressure into bearing from inside shaft, just a thought.
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11-13-2014, 10:04 AM
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#229
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Registered User
Join Date: May 2010
Location: uk
Posts: 4
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Jamesp,
Can you fit a blanking plate into end of IMS before fitting bearing.
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11-14-2014, 03:21 PM
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#230
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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Wow - a blast from the past! A couple of thoughts on the blanking plate:
The IMS shaft is a pressed assembly and a sealed blanking plate would turn it into a pressure vessel. one that gets temperature and pressure cycled every time the engine runs. That would likely disassemble the IMS tube over time with disastrous results.
The plate would be hard to seal, and would take up real estate on the IMS bearing bore the bearing needs, so the bearing would not fit without additional machining of the IMS shaft which would be complicated.
The IMS threads sure have legs!
I sprung for a Durametric (BUY ONE OF THESE!) and my valve timing is still rock solid after a couple thousand miles with my unique IMS bearing fix which is at least a start. Now I have cam sensor problem I'm chasing and it looks like something electronic crapped out. The engine harness buzzes out clean so I'm looking at the driver for the sensor. My thought is the sensor is not getting energized, just like my thought was the engine harness had a broken wire. Oh well, time will tell and it's a hobby. With luck I wont smoke my ECU searching for voltage. I'm thinking about documenting troubleshooting the camshaft sensor and posting it here as there is almost no information on it on this forum or the rest of the internet. Anybody interested?
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2003 S manual
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12-27-2014, 05:40 PM
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#231
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Registered User
Join Date: Dec 2014
Location: Silver Springs, FL
Posts: 78
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Indy IMS fix.
My local indy mechanic has been working on these cars for years. His fix is the EPS fix shown in this video:
He charges $1400 to do this on cars with Tiptronic, which includes all parts and includes changing out the AOS, belt, and plugs.
Last edited by BobRickel; 01-12-2015 at 05:25 PM.
Reason: content correction
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12-27-2014, 07:31 PM
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#232
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Registered User
Join Date: Dec 2013
Location: Muncie, In
Posts: 1
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IMS replacement - Indianapolis
Sorry guys but I'm really needing some help on this one. My 2002 986-S is about to send me to the poorer farm Anyone know of a good non-Dealer in Indianapolis or close who could handle my IMS replacement. 35,000 miles but I'm paranoid, it had been garaged for most of its life prior to my purchase at 29,000. I guess I should also take this opportunity to replace the clutch?
thanks in advance for any advice..
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12-28-2014, 09:32 PM
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#234
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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Quote:
Originally Posted by BobRickel
My local indy mechanic has been working on these cars for years. His fix is to pull the engine, center punch a hole from the front oil pressured side of the IMS and put in a roller bearing with no seals. The oil comes through the IMS shaft from the front pressurized side and flows through the roller bearing and out the rear side thus constantly lubricating the bearing with pressurized oil. He charges $1400 to do this on cars with Tiptronic, which includes all parts
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The part he is center punching is the only thing holding the oil pump drive key from falling into the IMS shaft during operation. I see these failures occur without the assistance of a center punch.
It helps to understand the anatomy of the patient before performing the surgical procedure.
__________________
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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12-29-2014, 04:39 PM
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#235
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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Quote:
Originally Posted by BobRickel
My local indy mechanic has been working on these cars for years. His fix is to pull the engine, center punch a hole from the front oil pressured side of the IMS and put in a roller bearing with no seals. The oil comes through the IMS shaft from the front pressurized side and flows through the roller bearing and out the rear side thus constantly lubricating the bearing with pressurized oil. He charges $1400 to do this on cars with Tiptronic, which includes all parts
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This looks eerily similar to post 192 in this thread, which seems to have some fatal, if yet undefined flaw. Looks good to me, but I'll punch holes in an IMS shaft with very little provocation. Careful with that oil pressure however!
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2003 S manual
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01-10-2015, 12:06 AM
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#236
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Registered User
Join Date: Jan 2015
Location: Bulgaria
Posts: 6
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Hello i made a big mess on my Boxster S 987 3.4 L
I remove the flange to change the rubber seal of IMS without locking the Crankshaft
and now the shaft is on a side.
What should i do now !
Please check the attached photos
Thank you in advance
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01-10-2015, 09:32 AM
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#237
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Registered User
Join Date: Jul 2014
Location: Tacoma
Posts: 429
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The problem isn't that you didn't lock the crankshaft, it's that you didn't undo the chain tensioner.
There are plenty of good detailed write ups on doing this job correctly. If you look at one you'll see you caused yourself a ton of extra work. You are now facing a complete cam timing job.
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01-10-2015, 10:49 AM
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#238
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Motorist & Coffee Drinker
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,817
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Quote:
Originally Posted by Boxe1
Hello i made a big mess on my Boxster S 987 3.4 L
I remove the flange to change the rubber seal of IMS without locking the Crankshaft
and now the shaft is on a side.
What should i do now !
Please check the attached photos
Thank you in advance.
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I think that happens to more than a few people.
I don't know if it will help, but read through this thread if you haven't already:
IMS Install help! IMS bearing not centered
Be very cautious how you proceed. As Flaps10 implied, you will probably have to release all the tension from your cam chains, recenter the shaft, then reset your cam timing. Trying to force anything or taking short-cuts will probably damage your engine and lead to more problems.
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01-11-2015, 06:52 AM
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#239
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Registered User
Join Date: Jan 2015
Location: Bulgaria
Posts: 6
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Quote:
Originally Posted by flaps10
The problem isn't that you didn't lock the crankshaft, it's that you didn't undo the chain tensioner.
There are plenty of good detailed write ups on doing this job correctly. If you look at one you'll see you caused yourself a ton of extra work. You are now facing a complete cam timing job.
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So i face a big problem now ,
Any other advice ?
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01-11-2015, 06:54 AM
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#240
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Registered User
Join Date: Jan 2015
Location: Bulgaria
Posts: 6
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Quote:
Originally Posted by 78F350
I think that happens to more than a few people.
I don't know if it will help, but read through this thread if you haven't already:
IMS Install help! IMS bearing not centered
Be very cautious how you proceed. As Flaps10 implied, you will probably have to release all the tension from your cam chains, recenter the shaft, then reset your cam timing. Trying to force anything or taking short-cuts will probably damage your engine and lead to more problems.
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Thank you i will check the link now ,
If you get any more info over forum , Appreciate let me know
Best regards
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