Flywheel Options

Joshboody · 11-20-2011, 01:34 PM

I need a new clutch and probably going with ACT street, but not very familiar with my flywheel options. ACT does NOT make a matching lightweight flywheel. Are there aftermarket stock replacement lwfw that would match to ACT?

I’m not opposed to reusing my duel mass, but not many shops can resurface. And most state it can’t be done.

I think Spec would work… any others? Anyone mis-match clutch and lwfw manufacturers?

tscdennab · 11-20-2011, 02:36 PM

I think it would be a gamble to match an aftermarket flywheel to a different brand of aftermarket clutch. I would save up for a new OEM flywheel...

achien · 11-20-2011, 02:46 PM

Dinan?

bahn stormer · 11-20-2011, 03:11 PM

I personally find any flywheel that causes clutch chatter to be unacceptable in this car so I plan to try resurfacing OEM when the time comes. If there are any aftermarket flywheels that are compatable with ACT and do not cause any chatter I would be interested, especially since they are likely less expensive than a new OEM one.

Please let us know what you find and good luck!

stratos_335 · 11-20-2011, 03:42 PM

1M flywheel discussion here:

http://www.e90post.com/forums/showthread.php?t=612469

ar design · 11-21-2011, 08:18 AM

Quote:

Originally Posted by stratos_335

1M flywheel discussion here:

http://www.e90post.com/forums/showthread.php?t=612469

He has a 2008 so 8 bolt crank, not 6

bryce · 11-21-2011, 08:56 AM

in for more info. i'm going with an ACT clutch, as well, and wondering about flywheel options. how expensive is a replacement OEM flywheel?

tscdennab · 11-21-2011, 09:16 AM

Quote:

Originally Posted by bryce

in for more info. i'm going with an ACT clutch, as well, and wondering about flywheel options. how expensive is a replacement OEM flywheel?

About twice the clutch price, $900 or so...

bryce · 11-21-2011, 09:23 AM

yikes...

Joshboody · 11-21-2011, 09:32 AM

Ok Spec's site looks like they supply 2 different kits... 1 for lwfw and 1 for stock.
http://www.specclutch.com/cars/BMW/335/2008/Single
its a little confusing though, cause they have the lwfw option for both kits.

Looks like Spec flywheel would be a gamble... I'm not sure of other aftermarket options. And I don't want to stray from the ACT clutch; I haven't read anything bad yet except for engagement.

For resurfacing, flywheel just sits on a rotating chuck with a stationary grinding bit... I guess the special tool needed for DM is something that holds the 2 halves?

How would you check the smoothness of a flywheel to determine if its good or not?

Joshboody · 11-21-2011, 09:49 AM

Can the depth of the flywheel (for mounting) also be an issue for resurfacing?

mikeith · 11-21-2011, 10:25 AM

i wonder if there's any chance of bmw making an 8 bolt 1m spec flywheel as a performance upgrade?

surely ER is going to make a flywheel with their twin-disk setup anyway(one can only hope) which is the route i will be going. just hoping my clutch holds out long enough after i install meth and a few more bolt-ons in January for it to come out.

ar design · 11-21-2011, 10:45 AM

Just go with a stock flywheel. Either surface yours, or get a new one. I would never re-use a flywheel without surfacing.

Joshboody · 11-21-2011, 11:12 AM

Ok, I'm guessing the BMW DM can't be resurfaced cause you can't resurface the step also and may not retain clamping force.

Is the n54 externally balanced... I don't see any indexing on the flywheel, so doesn't matter how it's mounted?

oh man, now the Spec is kinda looking better

JD75 · 11-21-2011, 11:28 AM

tscdennab · 11-21-2011, 11:29 AM

Quote:

Originally Posted by Joshboody

Ok, I'm guessing the BMW DM can't be resurfaced cause you can't resurface the step also and may not retain clamping force.

Is the n54 externally balanced... I don't see any indexing on the flywheel, so doesn't matter how it's mounted?

oh man, now the Spec is kinda looking better

I think the Dinan lightweight flywheel resurface both the flywheel surface and the lip surface, so that the clamping force remains the same.

Here are some pics of the Dinan flywheel versus OEM:

http://www.e90post.com/forums/showthread.php?t=190229

tscdennab · 11-21-2011, 11:31 AM

Quote:

Originally Posted by JD75

What's that ??? Do you have any links or info about it ? Is there an 8-bolt version available ?

tscdennab · 11-21-2011, 11:39 AM

Just found out that there is a LuK flywheel for 335i, part number seems to be DMF112. This is usually identical to the OEM one but much cheaper (at least in Europe).

JD75 · 11-21-2011, 11:40 AM

Quote:

Originally Posted by tscdennab

What's that ??? Do you have any links or info about it ? Is there an 8-bolt version available ?

Hmmm,

I have plenty of info.

However without vendor status I suspect the post will be deleted.

A "8-bolt" version is a piece of cake.

Is your OE flywheel still off the car?

bryce · 11-21-2011, 11:42 AM

Quote:

Originally Posted by JD75

Hmmm,

I have plenty of info.

However without vendor status I suspect the post will be deleted.

A "8-bolt" version is a piece of cake.

Is your OE flywheel still off the car?

post teh info! the only way your post will be deleted is if you're trying to sell it. informative posts about products are allowed, no vendor status necessary

ar design · 11-21-2011, 11:49 AM

Quote:

Originally Posted by tscdennab

Just found out that there is a LuK flywheel for 335i, part number seems to be DMF112. This is usually identical to the OEM one but much cheaper (at least in Europe).

They arent available here, yet.... AFAIK

JD75 · 11-21-2011, 11:51 AM

It will be going on my car, once I get hold of a new HPF Stage 2 Feramic clutch.

I managed to toast up my ACT Street clutch on the 1/4 mile.

My mechanic was never a big fan of the OE dual mass flywheel, this was their solution for my 6-bolt 135i.

11-20-2011, 01:34 PM	#1
Joshboody Lieutenant Colonel 65 Rep 1,708 Posts Drives: pickemuptruck Join Date: Jul 2009 Location: Phoenix, AZ iTrader: (7)	Flywheel Options I need a new clutch and probably going with ACT street, but not very familiar with my flywheel options. ACT does NOT make a matching lightweight flywheel. Are there aftermarket stock replacement lwfw that would match to ACT? I’m not opposed to reusing my duel mass, but not many shops can resurface. And most state it can’t be done. I think Spec would work… any others? Anyone mis-match clutch and lwfw manufacturers?
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11-20-2011, 02:36 PM	#2
tscdennab Banned 153 Rep 1,809 Posts Drives: BMW 335i Join Date: Oct 2010 Location: Europe iTrader: (0) Garage List 2008 BMW [6.24]	I think it would be a gamble to match an aftermarket flywheel to a different brand of aftermarket clutch. I would save up for a new OEM flywheel...
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11-20-2011, 02:46 PM	#3
achien AC 95 Rep 2,387 Posts Drives: E90 Post Members Crazy Join Date: May 2007 Location: Toronto, Canada iTrader: (0)	Dinan? __________________ Your Supreme Leader
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11-20-2011, 03:11 PM	#4
bahn stormer Lieutenant 11 Rep 529 Posts Drives: 07 E90 335i 6MT, 65 MGB Join Date: Feb 2008 Location: PA iTrader: (3)	I personally find any flywheel that causes clutch chatter to be unacceptable in this car so I plan to try resurfacing OEM when the time comes. If there are any aftermarket flywheels that are compatable with ACT and do not cause any chatter I would be interested, especially since they are likely less expensive than a new OEM one. Please let us know what you find and good luck!
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11-20-2011, 03:42 PM	#5
stratos_335 First Lieutenant 36 Rep 332 Posts Drives: BMW 335i Join Date: Sep 2009 Location: Greece iTrader: (0)	1M flywheel discussion here: http://www.e90post.com/forums/showthread.php?t=612469
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11-21-2011, 08:56 AM	#7
bryce Banned 109 Rep 3,177 Posts Drives: zhp 3-pedal Join Date: May 2010 Location: texas iTrader: (22) Garage List 2005 bmw 330ci zhp [7.34] 2008 bmw 135i- sold [6.00] 2007 bmw 335i- sold [7.14]	in for more info. i'm going with an ACT clutch, as well, and wondering about flywheel options. how expensive is a replacement OEM flywheel?
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11-21-2011, 09:23 AM	#9
bryce Banned 109 Rep 3,177 Posts Drives: zhp 3-pedal Join Date: May 2010 Location: texas iTrader: (22) Garage List 2005 bmw 330ci zhp [7.34] 2008 bmw 135i- sold [6.00] 2007 bmw 335i- sold [7.14]	yikes...
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11-21-2011, 09:32 AM	#10
Joshboody Lieutenant Colonel 65 Rep 1,708 Posts Drives: pickemuptruck Join Date: Jul 2009 Location: Phoenix, AZ iTrader: (7)	Ok Spec's site looks like they supply 2 different kits... 1 for lwfw and 1 for stock. http://www.specclutch.com/cars/BMW/335/2008/Single its a little confusing though, cause they have the lwfw option for both kits. Looks like Spec flywheel would be a gamble... I'm not sure of other aftermarket options. And I don't want to stray from the ACT clutch; I haven't read anything bad yet except for engagement. For resurfacing, flywheel just sits on a rotating chuck with a stationary grinding bit... I guess the special tool needed for DM is something that holds the 2 halves? How would you check the smoothness of a flywheel to determine if its good or not?
	Appreciate 0 Quote

11-21-2011, 09:49 AM	#11
Joshboody Lieutenant Colonel 65 Rep 1,708 Posts Drives: pickemuptruck Join Date: Jul 2009 Location: Phoenix, AZ iTrader: (7)	Can the depth of the flywheel (for mounting) also be an issue for resurfacing?
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11-21-2011, 10:25 AM	#12
mikeith Lieutenant 35 Rep 450 Posts Drives: 07 E90 335i. TiAG Join Date: Feb 2009 Location: lubbock, tx iTrader: (0)	i wonder if there's any chance of bmw making an 8 bolt 1m spec flywheel as a performance upgrade? surely ER is going to make a flywheel with their twin-disk setup anyway(one can only hope) which is the route i will be going. just hoping my clutch holds out long enough after i install meth and a few more bolt-ons in January for it to come out.
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11-21-2011, 10:45 AM	#13
ar design 297 Rep 4,408 Posts Drives: 04 M3 Join Date: Jan 2008 Location: Denver, CO iTrader: (9)	Just go with a stock flywheel. Either surface yours, or get a new one. I would never re-use a flywheel without surfacing. __________________ -Critter
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11-21-2011, 11:12 AM	#14
Joshboody Lieutenant Colonel 65 Rep 1,708 Posts Drives: pickemuptruck Join Date: Jul 2009 Location: Phoenix, AZ iTrader: (7)	Ok, I'm guessing the BMW DM can't be resurfaced cause you can't resurface the step also and may not retain clamping force. Is the n54 externally balanced... I don't see any indexing on the flywheel, so doesn't matter how it's mounted? oh man, now the Spec is kinda looking better
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11-21-2011, 11:28 AM	#15
JD75 JDTuning 218 Rep 907 Posts Drives: G20 M340i xDrive,G80 M3 xDrive Join Date: Jan 2011 Location: Sydney iTrader: (1)	Attached Images
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11-21-2011, 11:39 AM	#18
tscdennab Banned 153 Rep 1,809 Posts Drives: BMW 335i Join Date: Oct 2010 Location: Europe iTrader: (0) Garage List 2008 BMW [6.24]	Just found out that there is a LuK flywheel for 335i, part number seems to be DMF112. This is usually identical to the OEM one but much cheaper (at least in Europe).
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11-21-2011, 11:51 AM	#22
JD75 JDTuning 218 Rep 907 Posts Drives: G20 M340i xDrive,G80 M3 xDrive Join Date: Jan 2011 Location: Sydney iTrader: (1)	It will be going on my car, once I get hold of a new HPF Stage 2 Feramic clutch. I managed to toast up my ACT Street clutch on the 1/4 mile. My mechanic was never a big fan of the OE dual mass flywheel, this was their solution for my 6-bolt 135i.
	Appreciate 0 Quote