Is a used 535i flywheel worth anything?

[TC535i]

Swapped my fly and clutch out for the E28 parts, made a nice difference. MUCH less rattle when the car's running, and no more scared looks from the passengers when I shut the car off! :D

Just wondering, is my old flywheel worth anything? MAN, that thing was heavy. Huge difference compared to the E28 fly that went in (resurfaced, so even a bit lighter than stock E28)

[winfred]

twin mass? boat anchor, 200 yard rifle target, 100 yard pistol target, manhole cover, somesort of demolition device.......

[Scott E]

Tim, I will take it off your hands free of charge.:) I will even let you shoot it


twin mass? boat anchor, 200 yard rifle target, 100 yard pistol target, manhole cover, somesort of demolition device.......

[Derek A.]

I sold mine on ebay with the old pressure plate for like $50. Beats throwing it in a dump.

[jplacson]

What's the disadvantage of those newer AL flywheels over the stock dual-mass ones? I know the stock isn't the best one around, but I'm sure BMW placed it there for a reason... what are the advantages of stock over l/w?

[winfred]

the weight helps make it women friendly, the dampning sorta quiets the gear box. they took the take up springs out of the clutch disk and put them in the flywheel, and when they wear out the flywheel rattles like a diesel engine at idle

[jplacson]

So would those new AL flywheels make the car rattle like a diesel at idle as well?

[winfred]

i was crapping on the twin mass flywheel

[Jeff N.]

The stock unit's 33lbs (on a 5 speed) and stores a boatload of energy. Helps low end torque and smoooooth shifting. A lighter unit will allow the engine to rev marginally faster both engaged and in neutral.

I have the 22 lbs E28 setup and Martin has 15 lb lightened E28 setup. The engines have better throttle "blip" response for downshift rev matching. I don't think they are really any faster accel wise.

I think the best reason to put in an E28 setup is cause the flywheels are mucho cheaper than a replacement dual mass. They can be resurfaced as well. If you are a real performance geek and want to have faster rev matching during downshifts, might put one in. Other than that, not much to talk about.

Jeff
90 535i, E28 flywheel and clutch setup



What's the disadvantage of those newer AL flywheels over the stock dual-mass ones? I know the stock isn't the best one around, but I'm sure BMW placed it there for a reason... what are the advantages of stock over l/w?

[BigD]

I wonder if anyone here has tried a lightweight flywheel. I was talking to a friend of mine about them who goes nuts upgrading his cars (his 50k+ worth in upgrades E30 was stolen, now working on a 993 GT2 with even more cash). He said lightweight flywheels force you to learn how to drive manual all over again. He stalled it several times until he learned how to get it right.


The stock unit's 33lbs (on a 5 speed) and stores a boatload of energy. Helps low end torque and smoooooth shifting. A lighter unit will allow the engine to rev marginally faster both engaged and in neutral.

I have the 22 lbs E28 setup and Martin has 15 lb lightened E28 setup. The engines have better throttle "blip" response for downshift rev matching. I don't think they are really any faster accel wise.

I think the best reason to put in an E28 setup is cause the flywheels are mucho cheaper than a replacement dual mass. They can be resurfaced as well. If you are a real performance geek and want to have faster rev matching during downshifts, might put one in. Other than that, not much to talk about.

Jeff
90 535i, E28 flywheel and clutch setup

[Jeff N.]

Uh...does Martin with a 15lb unit qualify as "lightened"?




I wonder if anyone here has tried a lightweight flywheel.

[BigD]

Dunno, I think Bavarian's is 14 lbs. But I guess that's close enough. I wonder what's the lightest you can get without jeopardizing integrity. However it's not lightened, but lightweight. I don't know if you mean the same thing. Lightened says to me it was a stock unit that was drilled or otherwise modified. Lightweight flywheels are aluminum.


Uh...does Martin with a 15lb unit qualify as "lightened"?

[632 Regal]

you say tomato I say go buy some... I have no idea what I'm talking about and its sooo early in the evening.

[BigD]

You just wait. I stayed up until 5am last night coding, and today looks to promise more of the same. I'll be sure to post some of my thoughts at that time.


you say tomato I say go buy some... I have no idea what I'm talking about and its sooo early in the evening.

[Jeff N.]

uh...a flywheel is an object typically measured in mass. What's the diff tween a 15 lbs steel flywheel and a 15 lbs aluminum flywheel? Maybe I'm missing something...?




Dunno, I think Bavarian's is 14 lbs. But I guess that's close enough. I wonder what's the lightest you can get without jeopardizing integrity. However it's not lightened, but lightweight. I don't know if you mean the same thing. Lightened says to me it was a stock unit that was drilled or otherwise modified. Lightweight flywheels are aluminum.

[winfred]

it's really shiney, MUCH better. i have been saving a cool factory flywheel for the next time i drop the tranny in my 325, it came from a 82 528e and it's the lightest 6 cylinder flywheel i've seen on a bimmer, it's around 15#

[Jeff N.]

damn. i always forget about the shiney factor. worth at least $300. Especially important for a flywheel...concours inspection item fur sur.

[632 Regal]

You just wait. I stayed up until 5am last night coding, and today looks to promise more of the same. I'll be sure to post some of my thoughts at that time.

[bahnstormer]

the lighter the flywheel the harder it is to go up hills
there is less rotating mass so it'll slow itself much quicker
but i'd think that with a 15lb flywheel (Martin) u'd feel
the engine rev A LOT FASTER. i mean climb to redline
much quicker

[BigD]

I didn't differentiate materials for the terminology. I said lightweight vs lightened is a big difference in how you make them. You can make a lightened 15 lb flywheel from a 33 lb steel flywheel by drilling a bunch of holes. That's a pretty big difference from a lightweight 15 lb solid aluminum (or any other material that you can use to achieve a light weight without jeopardizing integrity, like I said).


uh...a flywheel is an object typically measured in mass. What's the diff tween a 15 lbs steel flywheel and a 15 lbs aluminum flywheel? Maybe I'm missing something...?

[BigD]

Nah, big Operating Systems project.

[Unregistered]

I wonder if anyone here has tried a lightweight flywheel. I was talking to a friend of mine about them who goes nuts upgrading his cars (his 50k+ worth in upgrades E30 was stolen, now working on a 993 GT2 with even more cash). He said lightweight flywheels force you to learn how to drive manual all over again. He stalled it several times until he learned how to get it right.

Holy crap, where does all the coin come from? dentist, md, lawyer, oral surgeon, dope dealer, russian mafia, rich mommy & daddy or cheap credit student loan based money?

When I was going to school owning an e30, porsche, or m5 would have been impossible. Good summer jobs barely covered books, tuition fees and friday night beer money, I couldn't even afford a rusty old Lada and had to pedal my huffy to university.

[BigD]

Well, he's out of school now (a few years) and as far as I can tell, the only sources of income he has is his work designing/making injection molds, and co-owning a porn site. He had a good chunk of cash saved up to put a fat downpayment on a house with his GF, but now that he's single, it's all going into the car. Should be something scary. I think he's looking for 700 reliable hp (ie not crazy boost).


Holy crap, where does all the coin come from? dentist, md, lawyer, oral surgeon, dope dealer, russian mafia, rich mommy & daddy or cheap credit student loan based money?

When I was going to school owning an e30, porsche, or m5 would have been impossible. Good summer jobs barely covered books, tuition fees and friday night beer money, I couldn't even afford a rusty old Lada and had to pedal my huffy to university.