Author Topic: How can I improve throttle response? (Read 7935 times)

Wise Old Dog · « **Reply #15 on:** September 04, 2007, 10:10:14 AM »

M40 flywheel= 22 lbs. Can be reduced to 16-18lbs with machine work. Mine came out at 17.6 lbs. IIRC the M20 will be lighter, but you have to change the starter gear, or the ring gear on the flywheel. M20 allows for a bigger clutch, which equals more weight, but also handles more power if needed. Non AC M42's have the M40 flywheel. Most US 318is' have AC. I got lucky and found one for sale on e-bay, by a salvage yard in Georgia. $75 shipped. Best mod I have done next to the Mark D chip. Dramatically improved throttle response.

FL318i · « **Reply #16 on:** September 04, 2007, 10:50:05 AM »

maybe this will help
http://forums.bimmerforums.com/forum/showthread.php?t=567986&referrerid=56200

tjts1 · « **Reply #17 on:** September 04, 2007, 11:03:00 AM »

Good info. I'll keep this in mind on my next trip to Europe.

asubimmer · « **Reply #18 on:** September 04, 2007, 12:25:40 PM »

BTW the m20 starter DOES work on the getrag 240. I'm not sure if anyone has confimed that yet but I've been running it all summer and it works perfect. OBV this is for those who swap to the m20 flywheel.

Vladi · « **Reply #19 on:** September 04, 2007, 03:39:28 PM »

+1 on the starter.

ScreamerBeemer · « **Reply #20 on:** September 04, 2007, 09:45:56 PM »

Let me see if I'm understanding this right. When doin the m20 flywheel swap, instead of taking both the m20 and the m42 starters apart to swap the gear, you can just throw in the m20 starter have a beer and call it a day.

jpod999 · « **Reply #21 on:** September 04, 2007, 11:34:41 PM »

For the M20 flywheel swap, all you need is the flywheel, clutch, and M20 starter?

Lukis · « **Reply #22 on:** September 05, 2007, 10:31:44 AM »

check this: http://www.blackforestindustries.com/m20flywheel.htm
Or you may spend some hard working money and go: http://www.jbracing.com/flywheel-bmw3.php
I will probably go for jbracing in the near future

bmwman91 · « **Reply #23 on:** September 05, 2007, 11:13:45 AM »

Quote from: jpod999;33116

For the M20 flywheel swap, all you need is the flywheel, clutch, and M20 starter?

You also need an E21 323i throw out bearing. I heard somewhere that you can use a different, less rare, less $$$ one, but I cannot remember the details. The shorter M20 flywheel studs are also needed.

asubimmer · « **Reply #24 on:** September 05, 2007, 12:27:24 PM »

Quote from: ScreamerBeemer;33110

Let me see if I'm understanding this right. When doin the m20 flywheel swap, instead of taking both the m20 and the m42 starters apart to swap the gear, you can just throw in the m20 starter have a beer and call it a day.

yep, exactly right