M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Engine + Driveline => Topic started by: 318lotis on July 22, 2009, 12:09:37 PM

Title: light weight flywheel
Post by: 318lotis on July 22, 2009, 12:09:37 PM: i have e30 318is having trouble finding light weight flywheel anybody have any good sources for a supplier?
Title: light weight flywheel
Post by: 1991 E30 M42 on July 22, 2009, 02:09:28 PM: Metric Mechanic, JB Racing, stock single mass, or M20 flywheel
Title: light weight flywheel
Post by: 318lotis on July 22, 2009, 04:13:58 PM: wow, metrick mechanic $850.00, thats alot of cash, can one just use a m20 part?
Title: light weight flywheel
Post by: nickmpower on July 22, 2009, 04:34:53 PM: use a m20 flywheel, m20 clutch disk and pressure plate, and e21 323 throwout bearing, and you need to space the flywheel a tad
Title: light weight flywheel
Post by: 1991 E30 M42 on July 22, 2009, 04:46:50 PM: I know I didnt spend that much on my MM flywheel, but yes, an M20 flywheel would be very nice especially if you lighten it a bit.
Title: light weight flywheel
Post by: JoeDellio on July 22, 2009, 11:31:53 PM: Quote from: nickmpower;75705
use a m20 flywheel, m20 clutch disk and pressure plate, and e21 323 throwout bearing, and you need to space the flywheel a tad

Can you please elaborate on the tad of spacing? :D Im looking to do this sometime soon, like in 2 weeks when I pull my engine. And most important, this is good for the E36 also?
Title: light weight flywheel
Post by: Lukis on July 24, 2009, 07:37:05 PM: The thing that was the most positiv with converting to my JBRacing flywheel was the downshifting at the track. The E36 is not that tail happy, so I would not spend a lot of money replaacing the flywheel on a E36.
Title: light weight flywheel
Post by: monko141 on July 25, 2009, 01:41:27 AM: You will need a m20 starter also if you use an m20 flywheel.
Title: light weight flywheel
Post by: carnurd on July 25, 2009, 09:32:34 PM: Have you tried looking at bimmerworld.com or turnermotorsports.com? They carry alum flywheels for pretty much all applications should be about 650. But if your looking for a lightweight steel one its a bit harder to find. If you wanted to do a m20 flywheel swap you need the whole shebang.
Title: light weight flywheel
Post by: JoeDellio on July 26, 2009, 06:40:29 PM: Quote from: Lukis;75829
The thing that was the most positiv with converting to my JBRacing flywheel was the downshifting at the track. The E36 is not that tail happy, so I would not spend a lot of money replaacing the flywheel on a E36.

Yeah, but it weighs a damn 27 lbs.
Title: light weight flywheel
Post by: Hodge on July 26, 2009, 06:44:46 PM: I have the UUC 11.5# flywheel and love it. It chatters alot when the A/C is on and a tiny bit when it is off, but I don't care. Engine revs so smooth.
Title: light weight flywheel
Post by: ob_318is on July 27, 2009, 12:21:55 PM: Quote from: 318lotis;75691
i have e30 318is having trouble finding light weight flywheel anybody have any good sources for a supplier?

I did the conversion, this weekend. Following: http://www.blackforestindustries.com/m20flywheel.htm

Good luck...as for the starter, save yourself some time and do the gear switching, instead of using a 325i starter.

I tried to bolt the 325 starter right on, but did not line up, could be an error on my part...: x
Title: light weight flywheel
Post by: JoeDellio on July 27, 2009, 04:29:02 PM: Is the 323 an 325 TOB the same part? I was just wondering if a 325 ebay clutch kit would do the trick, along with the m20 flywheel and starter. Isnt the m20 stuff from the same car also?

Im goin to pick up my new M42 engine from a salvage yard (125 mile drive) next weekend so I want to make sure I ask for all the right stuff in one shot. If I have it right I can grab the 88-91 325 flywheel and starter, and then just order a 325 clutch kit?
Title: light weight flywheel
Post by: max123 on August 04, 2009, 06:42:17 PM: Can I just take the stock flywheel to a machine shop and get them to take some weight off? That way I keep everything the same, no new starter, or messing around with new clutches, pressure plates, spacers, etc.

Anyone done this before?
Title: light weight flywheel
Post by: 318lotis on August 04, 2009, 11:55:03 PM: i have read somewhere that the "machine shop method' will not work, but i dont understand why.
Title: light weight flywheel
Post by: Hodge on August 05, 2009, 08:25:09 AM: It doesn't, because it is a dual mass...There isn't really much of anything to take off. IIRC only single mass flywheels can be shaved down.

Speaking of which, I think you can use the M40 single mass stuff for an easy swap too.
Title: light weight flywheel
Post by: max123 on August 05, 2009, 03:57:52 PM: But all non-AC cars have single mass flywheels, right? If that's the case, then I would opt for the machine shop. Alternatively, the Metric Mechanics Single Mass Flywheel is only $350 +core. Which isn't half bad.
Title: light weight flywheel
Post by: Hodge on August 05, 2009, 09:01:27 PM: Most probably d, for good reason.

Dual mass flywheels suck up TONS of vibration and noise...move to a single mass and you get alot more noise. Especially if the A/C is on.
Title: light weight flywheel
Post by: Janne on August 16, 2009, 06:14:31 AM: Quote from: Hodge;75898
I have the UUC 11.5# flywheel and love it. It chatters alot when the A/C is on and a tiny bit when it is off, but I don't care. Engine revs so smooth.

Do this UUC 11.5 flywheel have the TDC-hole?
Have you take 0-100kmh time with your lightweight flywheel?
Im thinking to buy that flywheel-clutch combo on understeer.com but they dont answer to my email:(

Where the company are located? Usa?
Title: light weight flywheel
Post by: 318lotis on August 17, 2009, 04:09:13 PM: pelican has a single mass flywheel for our car, for without ac,the European version they have this in stock.
Title: light weight flywheel
Post by: robweenerpi on August 18, 2009, 12:03:40 AM: Quote
Speaking of which, I think you can use the M40 single mass stuff for an easy swap too.

Quote
pelican has a single mass flywheel for our car, for without ac,the European version they have this in stock.

Same thing, but I have this setup and it's nice. Clutchmasters rebuilt the stock kit for me and beefed it up. A machine shop can cut a bunch of weight off there too. Stock for stock the M40 setup is only like 5 pounds lighter. Mine is now 26 pounds with the clutch and flywheel together.