1990 M20 325 flywheel, what and where

Moderator: martauto

Post Reply
User avatar
jo325
E30 Zone Newbie
E30 Zone Newbie
Posts: 11
Joined: Thu Jan 28, 2016 11:00 pm

Sun Apr 17, 2016 10:42 pm

Hi guys. I've been looking about for a lightened flywheel for the motor and have read that not to go for anything below 6kg. Its a road car and will be rarely on a track. Just looking to increase performance a bit and get it ro rev up quicker. Any taughts what and where to go for. Thanks in advance.
jmc330i
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 6621
Joined: Mon Jan 10, 2005 11:00 pm
Location: Somerset

Sun Apr 17, 2016 11:19 pm

Just get a standard one lightened. Think mine is about 6.5kg.
James
'91 325i Sport
'93 318i touring 16v
maggspower
Turbo Farmer Tractor Driver
Posts: 2376
Joined: Wed Oct 12, 2005 11:00 pm
Location: Nowhere near South Wales, ok butt

Sun Apr 17, 2016 11:26 pm

Your current one can be lightened.

6 cylinder cars are largely unaffected by the weight of the flywheel. You may need a few more revs to pull of, but the tales of lumpy idle and losing torque are bullshit.

Image

It need to be balanced after.

Pm me if you would like it done, its a very good mod :D
User avatar
jo325
E30 Zone Newbie
E30 Zone Newbie
Posts: 11
Joined: Thu Jan 28, 2016 11:00 pm

Mon Apr 18, 2016 9:10 am

Cheers Maggspower. PM sent

@ jmc330i how do you find the flywheel works in the car???
jmc330i
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 6621
Joined: Mon Jan 10, 2005 11:00 pm
Location: Somerset

Mon Apr 18, 2016 10:48 am

Ah sorry dude, mine is fitted to a 4cyl M44 engine.

Byron (Maggspower) doesn't know it yet, but he'll be lightening another one for my M20 when I start work on it :D
James
'91 325i Sport
'93 318i touring 16v
User avatar
jo325
E30 Zone Newbie
E30 Zone Newbie
Posts: 11
Joined: Thu Jan 28, 2016 11:00 pm

Mon Apr 18, 2016 11:01 am

:thumb:
User avatar
reggid
E30 Zone Squatter
E30 Zone Squatter
Posts: 1981
Joined: Mon Jul 11, 2005 11:00 pm
Location: Oz

Mon Apr 18, 2016 9:31 pm

i have lightened OEM FW 12-13lb and with decent cam you can still use A/C and drive in peak hr traffic without fear of stalling on a good running specimen. i wouldn't go lighter as chances are it will chatter worse and on a smaller engine it may be a little more sensitive due to the smaller firing pulses.
E30 325is with M20B31
User avatar
jo325
E30 Zone Newbie
E30 Zone Newbie
Posts: 11
Joined: Thu Jan 28, 2016 11:00 pm

Mon Apr 18, 2016 10:15 pm

I dont have AC on the car but I have had clutch and flywheel combos on other cars that were a pain in the ass in traffic and certainly want to avoid that again. So what kind of price you after for it? Also im in Ireland...
Post Reply