Anybody used the LN Roller bearing IMS bearing?
I tend to favor a roller bearing for this swap, has anybody here successfully used the LN Roller bearing Replacement bearing for their IM S upgrade? Any issues?
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I am not aware that LN produces a roller bearing replacement for the IMS. There is one that they offer on their web site as an "economical alternative to the ceramic roller bearing". But it appears that it is actually createded by RND Engines rather than LN. LNE states: "We did develop a version that utilized a cylindrical roller bearing with thrust ring, but it never made it from testing to production for the primary reason that Porsche chose a ball bearing originally, not a roller." There is some interesting discussion of OTHER roller bearings here: http://986forum.com/forums/general-discussions/56810-ims-replaced-roller-bearing.html and here: EPS Eternal fix Cylindrical roller bearing ims with oil feed - Rennlist Discussion Forums By my read it looks like the biggest problem with the roller bearings is dealing with thrust force. It looks like that one, sold on the LN web site, handles the load well and does not require an oil feed. Oil feed implementations may vary in success, so I like that this one does not need it. It costs the same as the ceramic ball bearing replacements. I have no experience with it, but it looks like a good 4 year/50,000 mile choice. |
I did this:
IMS Solution Retrofits
Just ship your car to Jake Raby at Flat 6 Innovations like I did and have him install the plain bearing, oil fed, IMS Solution. Lifetime fix. Just do it and start enjoying life. :cheers: |
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http://986forum.com/forums/performance-technical-chat/61840-newbee-ims-question-2001-s-2.html His car may not be a candidate for that without a complete engine disassembly. ...and any fix that feeds potentially contaminated oil into the bearing is also not a good idea. |
Ooooooooh....
.....well......based upon THAT...
He is so far past screwed, he can't catch a bus BACK to being screwed. A new IMS is not going to help that time bomb, only delay the explosion. Thanks for the head's up. New engine time. Yikes. Sorry, Dude. :ah: |
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If you want the best, go for the IMS Solution, which is the only permanent IMS retrofit on the market. A lot of independent shops now do the Solutions, and LN released a dual row version earlier this year. That said, just be aware that any shop doing the Solution worth its salt would flunk your car in the pre install inspection due to metal in the filter and/or sump, and refuse to do the install. |
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Still today nobody have been able to output centrifugal force data on the shaft itself so hard (near impossible) to say which is better. If it be me I'd stick with what Porsche says ;) Roller bearings are a type of bearing that use rolling elements to support loads and reduce friction. As opposed to ball bearings, roller bearings have barrel-shaped rolling elements instead of spherical balls. They are capable of supporting heavier loads than similarly sized ball bearings but cannot handle as high of speeds as ball bearings. |
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Was just sayin RPM, often the easiest decision benchmark when CAE data is out of reach. Old formulas. Tons of engineer calculators available online that will let anyone know how much you'll be able to rev up that little sport car during those spirit drives (roller vs balls, etc). Not a taboo thing MicroPoly - Maximum RPM Calculator (J - why builders want rollers? any specific reason(s) to this?) |
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We have pulled a lot of OEM bearings, and not once have seen evidence of excessive thrust loading. |
huh? Completely lost now man. Roller bearings have nothing to do with 'thrust', I'll check again but last time I did it wasn't lolll I would have expected the use of the roller bearing to defeat any great centrifugal force/load that the shaft could have made. Interesting....
Thrust? as in gravity pull under accel? momentum (kg.m/s)? data based on what exactly? If you know. Not that I care to know, just curious |
I'm kind of surprised that for someone who claims to be very knowledgeable on cars, and familiar with roller bearings, you've ignored the most important step to a retrofit which is an engine cleaning. If you have ferrous metal in your engine then a retrofit isn't going to help you. The metal will only destroy the next bearing you put in.
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http://986forum.com/forums/uploads02...1466887672.jpg I would not expect a lot of force in that direction on the IMS, but a slight oscillation at high RPM over time could wear a roller style much more than a spherical ball. ...? |
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Put thrust load on that roller bearing in your picture and it will immediately fail. Not after a few rotations, I mean immediately fail as "it just won't spin anymore". hence why I was confused with JFP's thrust explanation. In fact, I'm convinced its a spelling mistake he didn't bother to correct. Or perhaps he's trying to make fun of the IMS business-goin'on thing situation. I don't know man. If indeed that IMS shaft suddenly requires both thrust and load management then one needs a bloody angular bearing on that axis. Beside these sort of shaft design are rare as hell, they are terrible design in fact and are avoided as much as possible. Porsche?! |
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carry on all |
JFP covered that well in #6 earlier:"
"That said, just be aware that any shop doing the Solution worth its salt would flunk your car in the pre install inspection due to metal in the filter and/or sump, and refuse to do the install." Yes, I do hang on his every M96 word.He is very knowledgeable and helpful. |
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And to expand a bit on this feces with LN and their claim of never suffering a failure, which has been proven not to be true, and their 'Prequalification' as absolute dog feces. What they're doing is trying to cherry pick cars that never had a problem to begin with, so it's a huge question weather or not these cars would of ever had an issue with their bearing ever, anyway. So - Not impressed either with Stuck on Stupid comments- i know, it's the internet, or LN's magic bearing that only fixes problems that don't exist. T/Y :ah: |
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Has he seen your motor? No. However you act like yours is so special. He's seen a million other m96s in every form of failure. As has Jake Raby. Raby has seen so many failures that he actually came up with a way to make them better. If you want to thumb your nose at that research, go ahead, it's your money. Ferrous metal in your engine is bad anyway you slice it. If you think the roller bearing will pray it away, best of luck. I'll light a candle for you tomorrow. |
Man walks into LN Medical Offices, Doc, i feel fine! Dr. Elen says, see, told you so, that will be 800 bucks! LoL.. ; )
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