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  #431  
Old 01-16-2014, 12:02 AM
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Quote:
Originally Posted by Ricky Bobby View Post
Parts are $300, not sure if the kit includes a new flywheel though, probably doesn't.

Home Page Search SiteSearch 21217528208 ES#41161 Clutch Kit - 21217528208


If anyone wants a shop reference for a clutch job in Jersey, pm me. The guys literally rebuild transmissions, install limited slip diffs, and do clutch jobs all day long, one of the owners is a certified Mercedes Black Series tech.
A new flywheel would add a lot to the price, especially a dual-mass. ECS has two of them listed for the e53, one at $850 and another at $550. Home Page Search SiteSearch 21217512474 - ECS Tuning Inc

I would think it'd be a rare case where the flywheel would have to be replaced though; if it came to that, I'd be tempted to go with the single-mass conversion kit. Very tempted, when the whole kit with pressure plate, clutch, flywheel & hardware costs just a tad more than the cheaper dual-mass option. I wonder how much that flywheel weighs though. Looks massive compared to the 14 pounder I bought for my M20 e28.

Home Page Search SiteSearch 21217512474 ES#2702807 Single Mass Flywheel Conversion Kit - 52401220

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  #432  
Old 01-16-2014, 08:02 AM
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I figured as much on the dual mass flywheel. If it needed servicing with the clutch I would imagine it would he replaced at the same time and BMW would include it in their clutch kits.

Single mass conversion looks nice, don't they tend to have more chatter though? Either way it looks like the kit is E46 fitment anyway.

Mods why is this thread not a sticky like the 4.6/4.8 thread?
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  #433  
Old 01-16-2014, 10:20 AM
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They say the dual-mass is smoother on launch, but I suppose it depends a lot on the driver, and other factors. This e53 is the first vehicle I've owned with a dual-mass FW, and until I pitched the CDV my launches and shifts in it were pathetically not-smooth.

Even though that conversion kit is spec for the e46 it should fit the e53 as well; both models use the same flywheel, clutch plate, throwout bearing, etc... No number for the pressure plate, but I can't imagine the kit wouldn't work. A 3.0L M54 is a 3.0L M54 regardless of the wrapper it's in.

RealOEM.com * Part Cross-reference
RealOEM.com * Part Cross-reference
RealOEM.com * Part Cross-reference
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  #434  
Old 01-16-2014, 11:15 AM
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The transmissions are the same too, right?

I stand corrected and thanks for the cross reference Dave, looks like the Single Mass conversion kit would work for someone needing a clutch job!

For what its worth, if I ever needed a clutch job on my 3.0, I wouldn't hesitate to use the LUK dual-mass flywheel you linked from ECS for $550, along with the $300 clutch disc kit from BMW. I'm 99% sure that LUK is the OEM for our flywheels and clutch parts, so I'm sure the savings direct from LUK are in the fact that its their branded part and not in BMW packaging (similar to Lemfoerder and Genuine BMW for susp parts).


Although if one were to want to save about $300 in parts, the Single Mass conversion kit is a nice option!
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  #435  
Old 01-16-2014, 12:30 PM
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The transmissions are different because of the transfer case attachment. The cross reference check on the trans only comes up with the X5. But I wonder if the manual transmissions for the e46 330Xi would work... I've never seen the underside of one of them in person, so
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  #436  
Old 01-16-2014, 04:20 PM
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I was not aware the our X's had dual mass flywheels. Correct me if i am wrong but this seems like a big performance compromise to add some comfort for people who don't know how to feather a clutch well? I have to imagine that extra weight on the DMF is noticeable. As we all know mass on rotating bodies exponentialy effects their moment of inertia.

BTW I am thinking about doing the CDV on mine but I am just sort of wondering if it is that noticeable. It seems like most on here have done it. Opinions?
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  #437  
Old 01-16-2014, 04:20 PM
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I was not aware the our X's had dual mass flywheels. Correct me if i am wrong but this seems like a big performance compromise to add some comfort for people who don't know how to feather a clutch well? I have to imagine that extra weight on the DMF is noticeable. As we all know mass on rotating bodies exponentialy effects their moment of inertia.

BTW I am thinking about doing the CDV on mine but I am just sort of wondering if it is that noticeable. It seems like most on here have done it. Opinions?
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  #438  
Old 01-16-2014, 04:30 PM
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Do it! One of the best cost vs enjoyment mods that you can do...considerable difference in clutch engagement response. If mine didn't already have it done when I bought, it would have been at the top of my mod list.
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  #439  
Old 01-16-2014, 04:49 PM
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Just do it, I never drove with one in but mine drives so nice I can imagine its a big difference. Bleed the clutch after you're done too.

If you want instructions, on page 36 of this thread:

http://www.xoutpost.com/bmw-sav-foru...thread-36.html
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105k miles -Topaz Blue/Schwarz/Titan Int. Trim/EHCII/Sport
Proud 3-Pedal owner, UUC SS/AFE/4.8iS Exhaust/Sharked
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  #440  
Old 01-16-2014, 04:53 PM
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Yes, do it (the CDV delete.) It's an easy mod and makes a huge difference; I can't understand why BMW did it in the first place. It makes the clutch action very unnatural. With it gone, the clutch works as it should. The CDV isn't really a valve at all, it's just a flow restrictor. There is an orifice inside the CDV that creates a bottleneck for the flow of the hydraulic fluid. The diameter of the pipe is reduced considerably, which just slows movement of the clutch. I want to have the clutch moving when my foot moves the clutch pedal, not after.

Many people buy the doodad that replaces the CDV, but it really isn't necessary; one end of the CDV threads into the slave cylinder, and the hydraulic line fitting threads into the other. With the CDV out of the way, the hydraulic line fitting just threads into the body of the slave. I had a bit of a time getting things lined up properly, and ended up removing the slave to get it done, but that wasn't much of a problem at all.
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