240 or 260

[GunMetalGrey]

I am doing a m50b25tu swap into what was an auto 325is. I can get either tranny for about the same price. I would like to boost eventually and I am just trying to find some actual numbers of what each trans can handle. Side note, I have a driveshaft from a 325is auto, can that be used with either? Thanks!

[thepoloplaya]

get the 260, the 240 is weak.

[318isbmw]

260 definitely. The 240 I used hated life. Go for the tried and true.

[GunMetalGrey]

Has anyone ever seen actual numbers as to what they each can handle? And 260 does seem better because of clutch and flywheel options.

[Mr.SWISS]

Has anyone ever seen actual numbers as to what they each can handle? And 260 does seem better because of clutch and flywheel options.

Uh I used one on my Z3 swap and it was just fine. Swapped engine, front sway, and struts only, all rest was 1.9L spec.

[ExViTermini]

The 240 is pretty weak from what I've heard. Im making 500whp through a g260 right now and it's been holding the abuse so far for a few thousand miles.

[GunMetalGrey]

^ thats exactly what I wanted. What clutch/PP setup are you using?

[ExViTermini]

328 flywheel, F1 racing 6puck 328 clutch. (sach's pressure plate with solid 6 puck disc)

[flyboyx]

this is a question that is honestly not worth asking. not to mention the fact the 240 is the weaker of the two, it is also a few inches shorter than a 260. what will you do for a driveshaft? will you waste a few hundred on a custom length one and run a weaker trans to boot? not likely.

[Philo]

240's are virtually useless. I always try to use a ZF or getrag 250 when doing a 24v swap. The closed ratio trans is nice, plus, i'm not a big fan of running the getrag 260 at an angle (as is necessary with 24v engines). This starves one side of the tranny slightly.

[shiboujin]

I've never seen a 240 snap. The innards are nearly identical minus first and second. You'd need an M42 drive shaft but it's def doable.

For not boosted, I think a 240 would give you some nice accel while the 260 would be better for future boosting.

But no one asked a very obvious question: what diff?

[psyber_0ptix]

My g240 is holding up fine with an s50. the 4.1 lsd makes it a lot of fun on backroads but it's not a highway cruiser (not the purpose of this car anyway).

I used an e36 driveshaft and e30 center support bearing, so i don't know what this hubbub is about custom length driveshafts....did you actually do the swap flyboyx? euro 320i throughout bearing is a must and you use a clutch/pressureplate system from an m20-g260 equipped car. it's well documented so I don't understand the misinformation spread.

iirc, the advantage to running the g260 is you can fit the 240mm flywheel/clutch from e36 328/m3's (correct me if i'm wrong)

[shiboujin]

I don't see why you couldn't run the 240mm flywheel in a gr240. The bell housings look the same to me.

[Mr.SWISS]

My g240 is holding up fine with an s50. the 4.1 lsd makes it a lot of fun on backroads but it's not a highway cruiser (not the purpose of this car anyway).

I used an e36 driveshaft and e30 center support bearing, so i don't know what this hubbub is about custom length driveshafts....did you actually do the swap flyboyx? euro 320i throughout bearing is a must and you use a clutch/pressureplate system from an m20-g260 equipped car. it's well documented so I don't understand the misinformation spread.

iirc, the advantage to running the g260 is you can fit the 240mm flywheel/clutch from e36 328/m3's (correct me if i'm wrong)

wrong I used the M52 clutch on my Z3 swap. IDK if the trans saw any improvements from the E30 m42 240's to the ones in the E36's used up to 98, but I romped on my old Z daily and it was a beast with the 4.10.
Car had 98K when I swapped.
Compare that to the g250 I had in my first e30 swap with "100K" on engine an trans out of a 92 325is and it had first gear would sometimes just pop out to neutral on launch. I then found out the g250's are teh weaksauce.

If you get a 240 out of a 97 and up car and get the shaft I think you will be happy if you are 2.8L or less.

[drumad]

My g240 is holding up fine with an s50. the 4.1 lsd makes it a lot of fun on backroads but it's not a highway cruiser (not the purpose of this car anyway).

I used an e36 driveshaft and e30 center support bearing, so i don't know what this hubbub is about custom length driveshafts....did you actually do the swap flyboyx? euro 320i throughout bearing is a must and you use a clutch/pressureplate system from an m20-g260 equipped car. it's well documented so I don't understand the misinformation spread.

iirc, the advantage to running the g260 is you can fit the 240mm flywheel/clutch from e36 328/m3's (correct me if i'm wrong)

I'm using the exact same set up.

I don't see why you couldn't run the 240mm flywheel in a gr240. The bell housings look the same to me.

It looks the same, but the 240mm flywheel won't fit. Otherwise I wouldve went with an e36 set up.

wrong I used the M52 clutch on my Z3 swap. IDK if the trans saw any improvements from the E30 m42 240's to the ones in the E36's used up to 98, but I romped on my old Z daily and it was a beast with the 4.10.
Car had 98K when I swapped.
Compare that to the g250 I had in my first e30 swap with "100K" on engine an trans out of a 92 325is and it had first gear would sometimes just pop out to neutral on launch. I then found out the g250's are teh weaksauce.

If you get a 240 out of a 97 and up car and get the shaft I think you will be happy if you are 2.8L or less.

Hm, interesting.