found contradicting info, anyone clear up a G240 question?

[nokincy]

FWIW the m20 and m50 flywheel are the same size.

Use m50 flywheel
m50 starter
m50 clutch
m42 pilot bearing (g240)
either m42 throwout or m50 (not sure)
320i shift linkage and carrier or shorten your g240 items (don't waste your time with the zf or g260 parts.)
e36 325i driveshaft

I think that covers it. As far as the throwout bearing compare the height of the m50 flywheel clutch set up to the m42 items. If you don't have the m42 stuff I can get the info for you next time I'm home.

[2.5-12]

FWIW the m20 and m50 flywheel are the same size.

Use m50 flywheel
m50 starter
m50 clutch
m42 pilot bearing (g240)
either m42 throwout or m50 (not sure)
320i shift linkage and carrier or shorten your g240 items (don't waste your time with the zf or g260 parts.)
e36 325i driveshaft

I think that covers it. As far as the throwout bearing compare the height of the m50 flywheel clutch set up to the m42 items. If you don't have the m42 stuff I can get the info for you next time I'm home.

this was very helpful, thanks! the one bit I have to ask though is the M42 G240 pilot bearing the same as M50TU G250 or same as M20 G260?

[spyde25]

A light flywheel will allow the engine idle speed to be pulled down momentarily when the A/C compressor kicks on causing some vibration at that time, it will return to it higher A/C idle speed in a second or so. This is really not that big of a deal but lighter you go on the flywheel the worse it will be. I had my ecu reflashed with a higher idle which helps somewhat but if you want your car to act like a production e36 at idle you need to keep the stock weight flywheel. The same is true if you are running electric fans when they kick on. My flywheel is about 14 lbs but some of the lightweight ones are much lighter than that. Being as you are in Arizona this is really something to think about it's at least as hot as SC.

Good data thanks.

Since it seems the right people are in this thread i would like to dig a little deeper in this setup.


If one has a M50 with a G240 will the following combos work (just bought M20 clutch kit)

M50 Dual mass Flywheel
M50 Starter
M20 clutch kit


M42 dual mass Flywheel
M42 starter
M20 clutch kit.

[nokincy]

Good data thanks.

Since it seems the right people are in this thread i would like to dig a little deeper in this setup.


If one has a M50 with a G240 will the following combos work (just bought M20 clutch kit)

M50 Dual mass Flywheel
M50 Starter
M20 clutch kit


M42 dual mass Flywheel
M42 starter
M20 clutch kit.

Neither will work. Pressure plate is specific to flywheel.

[nokincy]

this was very helpful, thanks! the one bit I have to ask though is the M42 G240 pilot bearing the same as M50TU G250 or same as M20 G260?

The G250 is the same as G240. The G260 will not work the inside diameter is too small.

[2.5-12]

The G250 is the same as G240. The G260 will not work the inside diameter is too small.

wündebar. this is good to hear.

I won't lie, only reason I'm running a 240 over a 260 is I do not want to remove the pressure plate, clutch and replace the pilot bearing.

/probablymakesmeabadperson

[Mr.SWISS]

FWIW the m20 and m50 flywheel are the same size.

Use m50 flywheel
m50 starter
m50 clutch
m42 pilot bearing (g240)
either m42 throwout or m50 (not sure)
320i shift linkage and carrier or shorten your g240 items (don't waste your time with the zf or g260 parts.)
e36 325i driveshaft

I think that covers it. As far as the throwout bearing compare the height of the m50 flywheel clutch set up to the m42 items. If you don't have the m42 stuff I can get the info for you next time I'm home.

I approve this post, not all M42 318i's had 240's. I have one with a 250 in it. However I honestly never read the tag on the Z3, I assumed small case open diff/M44 must be a 240 on it. The motor ( M52B28 ) and all popped right in no issues. Started fine, no grinding, no funny clutch feedback, nada. Maybe it was a 250 IDK.
I just dont understand why all this back and forth when it takes 20 min to bolt it all up and check it out if its all pulled from the car?

[e30pq]

The G240 is a good trans. We used the G240 for a while when we had our race car configured with a Turbo M42 engine. As long as you don't run too much power thru it you should be okay. We were running about 300hp and 300ft lbs of torque so we pushed it to its limit and learned that those numbers are too high for the G240.

This is a video of a G240 saying goodbye to the world -- at the 9:15 mark - toward the end of the video.

https://www.youtube.com/watch?v=tPC2YrFgEaM

[2.5-12]

I approve this post, not all M42 318i's had 240's. I have one with a 250 in it. However I honestly never read the tag on the Z3, I assumed small case open diff/M44 must be a 240 on it. The motor ( M52B28 ) and all popped right in no issues. Started fine, no grinding, no funny clutch feedback, nada. Maybe it was a 250 IDK.
I just dont understand why all this back and forth when it takes 20 min to bolt it all up and check it out if its all pulled from the car?

true, I should have clarified my 318 parts are all from a 91 318i (E30) which were all G240.

20 minutes, sure, but you'll end up ruining $30 worth of stretch bolts for no reason if it doesnt work.

The G240 is a good trans. We used the G240 for a while when we had our race car configured with a Turbo M42 engine. As long as you don't run too much power thru it you should be okay. We were running about 300hp and 300ft lbs of torque so we pushed it to its limit and learned that those numbers are too high for the G240.

This is a video of a G240 saying goodbye to the world -- at the 9:15 mark - toward the end of the video.

https://www.youtube.com/watch?v=tPC2YrFgEaM

stock , unchipped M50TU power, although I will be towing with the car still so i question whether it will last forever. I have a spare worst case.

300wtq is damned impressive for that tranny to take. I doubt a 250 would have taken that.

[nokincy]

How are you bolting the e36 driveshaft to the 240? Doesn't the 240 use m10 guibo bolts while the e36 driveshaft use m12?

I would like to know what people are doing about this. What kind of sleeves are people using for the e36 shaft.

[Slovik]

e36 manual drive shaft bolts right up, maybe the earlier 240 were different but mine was a 91 model. Just use a center support bearing installed backwards.

[nokincy]

No. I have a e36 driveshaft and a '91 318i g240 and the holes in the driveshaft where it bolts to the guibo are m12 for sure and the holes in the guibo are m10.

[2.5-12]

so is it better to sleeve the M10 bolts, or is it better to drill the G240 output flange for M12?

[nokincy]

^You'd have to use a different guibo. I'd suggest sleeve the m10 bolts which is likely what I'll do. I'm sure there are some out there that have just bolted it up since it's widely known that the e36 driveshaft bolts right up and is the one to use with the g240.

[2.5-12]

if you drill the output flange out to M12 diameter, you can just run an E36 325i guibo though from what I gather.