IMS/RMS Replacement @ Flintworks 3/1/2010

offshore

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Alden, owner of Flintworks in Campbell, CA, installed the new LN Engineering ceramic IMS bearing and new RMS in my '99 Boxster with 80K miles today 03/01/2010. I made a video and took step by step photos for Alden to post. It's 8:45 pm and I'm in a room at the Campbell Inn beat from watching Alden work and ready to watch Jack Bauer save the US from imminent disaster. I'll add more about this process from my point of view later but will say that the procedure went very well and we both are confident in the new bearing. I'll be picking the car up tomorrow 03/02/2010 and will post my thoughts and observations tomorrow evening.:D

I'm stuck in my hotel room waiting for the rain to slack up so I'll add some observations. After the Tip was removed we could not see any oil leaking from either the IMS or RMS and both were original. Alden removed the IMS keeper and tapped the center bolt of the IMS bearing into the shaft as the instructions indicated. Immediately very thick, burned smelling oil ran out of the bearing so strong I could smell it front six feet back where I was videoing. The oil that was drained from the crank case had smelled normal so this oil was directly related to the bearing.
Upon removal the bearing appeared to be ok except it's rotating movement was not near as smooth as the LN ceramic bearing. The LN bearing tapped in smoothly using the somewhat primitive looking tools that were supplied and Alden, erring on the side of caution, tapped the bearing in in several stages removing the tool several times to check progress so the bearing was not pushed in to far. I was greatly relieved that he did it this way instead of just pounding away.
After the bearing was seated the keeper ring had to be installed and this proved to be the most difficult step as the ring is designed to fit in a groove just in front of the bearing and has to be collapsed just enough to clear the case and snap into the groove. Bending the ring is not an option as it will not work as designed but once again Alden was patient and took it in several stages until it snapped in properly.
The bearing keeper was then installed and Alden moved on to the RMS of which I won't go into detail as Alden will be posting images and a video of both procedures once I get home and edit everything.
The IMS bearing replacement is deemed a standard maintenance item by LN Engineering and although I had doubts when I read that I can now say I agree that the process, once learned, can probably be turned into an hour procedure.
I have nothing but praise for Alden and his work methods, he knows what he's doing, has a calm demeanor, excellent problem solving skills and knows Porsches. He's very positive about Boxsters and could sense my concerns regarding this procedure and put me at ease through the whole process stopping to answer my questions thoroughly. Just the fact that he allowed me to stay, looking over his shoulder and make a video says a lot as most mechanics I know want you out of their way. Although Alden is an hour and a half drive from me I will not hesitate to drive to his shop for further service.
The new IMS bearing and RMS will get their first work out today in the hour and a half drive home I just wish it was a better day so I could put the top down and take Hwy 1.
 
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Sounds good. Thx for the info.
Mind if I ask how much is the total cost?
 
lets see some pics.... ron, how do you like that obc switch?
Hi Mike, I'm sending a file of images to Alden today so he can post a thread here with photos. I'm also working on a UTube video of the procedure and a link to it will be posted in a new thread here when it's done. The OBC switch is fantastic! Thanks so much and hope to see you at the Alameda AX 3/20/2010. I'll pm you a link to the sign up site.:D
 
ims/rms

According to Flintworks website, the cost for the IMS mod is about $1500. Seems reasonable to me. Now if I can just find a shop in the Sacramento area to do it. On the other hand, a three hour drive and hotel night may not be so bad either!
 
According to Flintworks website, the cost for the IMS mod is about $1500. Seems reasonable to me. Now if I can just find a shop in the Sacramento area to do it. On the other hand, a three hour drive and hotel night may not be so bad either!

Have the RMS done at the same time and be done with it. It was refreshing to get away from home for a couple of days and I found a great Mexican place that had the best Pozole I've had since Oaxaca just down the street from the Campbell Inn. The hotel also had a killer complimentary breakfast.
 
were you staying at the Campbell inn that is in Pruneyard?
Did you eat at El Burro?:D
 
were you staying at the Campbell inn that is in Pruneyard?
Did you eat at El Burro?:D

Doc the Inn was on W. Campbell Ave and the place is called Jalisco about two blocks west of the Inn in a little shopping center on the right going west. Pozole and a Modelo, it doesn't get much better.:cool:
 
Pictures!!!

Video!!!

Thanks to Ronald Breeze Photography for the pictures and video.

The most notable part of the upgrade to me was the burning oil smell from behind the old bearing. It looks like oil makes its way to the bearing but has no way to drain out which likely contributes to the bearing failure. All and all its a pretty painless procedure and provides quite a bit of piece of mind. If anyone has questions about it feel free to post them here or call me.
 
Was part of the video missing? I don't recall seeing the old bearing come out. I saw you placing a special tool puller to pull the bearing out than immediately after that you were installing the bearing.
 
Was part of the video missing? I don't recall seeing the old bearing come out. I saw you placing a special tool puller to pull the bearing out than immediately after that you were installing the bearing.

Unfortunately I had to edit the original video way down to get YouTube to accept it and I decided that watching Alden turn a wrench for several minutes was not as important as what you see. The bearing just pulled straight out and into the tube of the puller.
 
Nice! Looks like the new bearing is narrower than the old, and is retined by a circlip that fits the same groove as the orignal bearing. Correct?
 
Nice! Looks like the new bearing is narrower than the old, and is retined by a circlip that fits the same groove as the orignal bearing. Correct?

The bearings are the same size (double roller) the camera angle and the still attached retaining ring on the Porsche bearing make them look dissimilar. The Porsche bearing has the retaining clip in a groove in the bearing case. When it is extracted the clip collapses and you hear a pop when it does. The new bearing is pressed in then the retaining clip is installed in front of the bearing and is a bugger to put in but once in is solid. The center bolt on the LN bearing is much stouter than the Porsche one and the bearing retainer cover is also a much stouter construction.
 
Seems like a simple procedure once the Trans are off the car. I think one way to determine how far to insert the bearing in the housing is to measure the distance of the bearing from the outer lip to the bearing race before removing it. It looked as if he didn't know how far in the bearing is supposed to go as you described earlier.

Did the puller and other special tool come with the bearing or did the special tools only go with LN Engineering authorized installer?
 
Seems like a simple procedure once the Trans are off the car. I think one way to determine how far to insert the bearing in the housing is to measure the distance of the bearing from the outer lip to the bearing race before removing it. It looked as if he didn't know how far in the bearing is supposed to go as you described earlier.

Did the puller and other special tool come with the bearing or did the special tools only go with LN Engineering authorized installer?

Keep in mind cas951 this was the first time Alden had installed the LN bearing and since it was my car I'd rather err on the side of caution. No directions can really take the place of actually doing the job but the directions do warn against over "pounding" on the bearing and not driving it in too far. Once the new bearing is inserted in the install tool and the tool is put in place, to start tapping the bearing in, it is difficult to see the actual progress of the bearing unless you take the tool away and look. Once the bearing actually seats you know it. You'll have to check with Alden re the tools.
 
The bearings are the same size (double roller) the camera angle and the still attached retaining ring on the Porsche bearing make them look dissimilar. The Porsche bearing has the retaining clip in a groove in the bearing case. When it is extracted the clip collapses and you hear a pop when it does. The new bearing is pressed in then the retaining clip is installed in front of the bearing and is a bugger to put in but once in is solid. The center bolt on the LN bearing is much stouter than the Porsche one and the bearing retainer cover is also a much stouter construction.

This is why I assumed the new bearing was narrower. Because the clip that goes behind the new bearing goes in the same groove as the original, which has the clip in a groove in the bearing case. So either the new bearing is narrower, or the new bearing is driven in further than the original bearing so that the retaining clip can go behind it.
 
Yes the new bearing is slightly narrower. It goes in to the same depth as the old bearing.

You can easily drive the new bearing in too far which is why I took my time with it. You can't use a measurement of the distance to the old bearing because the new one is a slightly different size. Even if you know approximately how deep to drive the bearing it will still take several stages of hammering to get the depth exactly right.

The bearing installer comes with the kit. The puller is sold separately.
 
Good to know we have one locally that has done the work.

Offshore, Yes I agree with you 100%. Firt time doing anything is always difficult specially when it involves a criticl part of the engine. Your video sure helps others that plan on doing this one day.

Thanks for sharing this experience.
 
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