Does anyone have information on the EPS roller bearing IMS Solution?
#1
Rennlist Member
Thread Starter
Does anyone have information on the EPS roller bearing IMS Solution?
Has anyone seen or have info on the roller bearing IMS "kit" shown in the VERTEX ad on pg 39 of the 2013-2014 Excellence buyers guide?
European Parts Solution (EPS) makes it. According to the ad there is an installation video at the EPS site, couldn't find it??
European Parts Solution (EPS) makes it. According to the ad there is an installation video at the EPS site, couldn't find it??
Last edited by fpb111; 08-07-2013 at 06:21 PM. Reason: change wrong title
#2
talk's cheap
I saw that ad, too, and was intrigued. But the lack of tech data at their web site, etc., is troubling. Until such time or until an in-depth article appears in a reputable publication, I think the LN/Flat Six solution is the de facto standard.
relinuca
relinuca
#3
Rennlist Member
Thread Starter
Agree about LN/Flat Six.
It appears that they are "pre-loading" thrust against the far end bushing. Wonder what that does to the bushing end.
It appears that they are "pre-loading" thrust against the far end bushing. Wonder what that does to the bushing end.
#4
IMS Roller Bearing
They are not preloading the bearing against the far end bushing.
There is a hardened plate on the inner ring mounting bolt that with the mounting flange, controls the end float in the IMS. There should be little or no thrust load on the bearing. I've looked at a lot of IMS bearings for a supplier of a "fix" for the problem. The Lack of good lubrication seems to be the major issue, but there is a heavy radial load on the bearing. A pressure lube system will help.
There is a lot of discussion on Pedro's Board on the IMS issue.
I would like to see some tech and test data on this roller bearing upgrade, too.
Ed B
Retired bearing engineer
PCA DE instructor & Steward
Six Porsches including a '00 Boxster S
There is a hardened plate on the inner ring mounting bolt that with the mounting flange, controls the end float in the IMS. There should be little or no thrust load on the bearing. I've looked at a lot of IMS bearings for a supplier of a "fix" for the problem. The Lack of good lubrication seems to be the major issue, but there is a heavy radial load on the bearing. A pressure lube system will help.
There is a lot of discussion on Pedro's Board on the IMS issue.
I would like to see some tech and test data on this roller bearing upgrade, too.
Ed B
Retired bearing engineer
PCA DE instructor & Steward
Six Porsches including a '00 Boxster S
#5
Originally Posted by EIB:11241658
They are not preloading the bearing against the far end bushing.
There is a hardened plate on the inner ring mounting bolt that with the mounting flange, controls the end float in the IMS. There should be little or no thrust load on the bearing. I've looked at a lot of IMS bearings for a supplier of a "fix" for the problem. The Lack of good lubrication seems to be the major issue, but there is a heavy radial load on the bearing. A pressure lube system will help.
There is a lot of discussion on Pedro's Board on the IMS issue.
I would like to see some tech and test data on this roller bearing upgrade, too.
Ed B
Retired bearing engineer
PCA DE instructor & Steward
Six Porsches including a '00 Boxster S
There is a hardened plate on the inner ring mounting bolt that with the mounting flange, controls the end float in the IMS. There should be little or no thrust load on the bearing. I've looked at a lot of IMS bearings for a supplier of a "fix" for the problem. The Lack of good lubrication seems to be the major issue, but there is a heavy radial load on the bearing. A pressure lube system will help.
There is a lot of discussion on Pedro's Board on the IMS issue.
I would like to see some tech and test data on this roller bearing upgrade, too.
Ed B
Retired bearing engineer
PCA DE instructor & Steward
Six Porsches including a '00 Boxster S
#6
IMS bearing
I knew someone would ask that!
I haven't replaced it yet. The Boxster only has 35K miles on it, mostly track. I'm tending toward the roller bearing, but I'd like some technical and test data first.
Recommendations for the ball bearing retrofits suggest changing them every 35-50K miles.
Ed B
I haven't replaced it yet. The Boxster only has 35K miles on it, mostly track. I'm tending toward the roller bearing, but I'd like some technical and test data first.
Recommendations for the ball bearing retrofits suggest changing them every 35-50K miles.
Ed B
#7
Ed, Have you done any kind of vibration analysis before in your line of work previously?
I'm wondering whatever happened to Mark Jennings(PCA member) that was doing vibration analysis on the m96 motors. That would've been a "true" engine guardian IMO if he could've packaged that into a nice neat electronic package.
I'm wondering whatever happened to Mark Jennings(PCA member) that was doing vibration analysis on the m96 motors. That would've been a "true" engine guardian IMO if he could've packaged that into a nice neat electronic package.
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#8
Rennlist Member
I think he's still dabbling with his research. His son is a friend of a friend and he actually analyzed my old C4S and commented it was one of the quietest engines he had ever "listened" too (and that was with 97k miles on the original IMS bearing).
#9
Three Wheelin'
Then there is the insaroims Spanish or Portugese house that has a two ball bearing solution, in case one fails. Second bearing rides inside IMS I believe... I give it an A for creativity. 2003 Carrera 4S Speed Yellow / 1955 356 Continental 1500 Rust Red
#10
How about an electronic ear mounted on where the transmission meets the engine. Sound is transmitted to the FM radio. Tune to the channel and hear your bearing Probably a lot easier for a human to tell the diff between a good bearing and bad bearing noise, as opposed to an algorithm based on freq analysis.
#11
I knew someone would ask that!
I haven't replaced it yet. The Boxster only has 35K miles on it, mostly track. I'm tending toward the roller bearing, but I'd like some technical and test data first.
Recommendations for the ball bearing retrofits suggest changing them every 35-50K miles.
Ed B
I haven't replaced it yet. The Boxster only has 35K miles on it, mostly track. I'm tending toward the roller bearing, but I'd like some technical and test data first.
Recommendations for the ball bearing retrofits suggest changing them every 35-50K miles.
Ed B
#12
Rennlist Member
How about an electronic ear mounted on where the transmission meets the engine. Sound is transmitted to the FM radio. Tune to the channel and hear your bearing Probably a lot easier for a human to tell the diff between a good bearing and bad bearing noise, as opposed to an algorithm based on freq analysis.
#13
By the time a human could hear the bearing, it's already too late. There's a lot more to it than just "hearing" it. It's been explained to me before by Mark, and I understand it, but I don't understand it well enough to cogently explain it to someone else, unfortunately.
Try to hear with your ears in the driver seat is one thing. Putting a hearing device directly below the bearing is another...
#15