24v noob alert!!! many questions

[bimmerboy4444]

many questions
-what years were the zf310/320 trans fitted to e36
-how week is the getrag 250? will it stand up reliably to m50b25 with s50 cams and having the snot kicked out of it on the track?
-will urethane trans mounts cut it(http://www.iemotorsport.com/bmw/E30-...hanetrans.html) or are the 320i aluminum cups a must?
-whats a good hd clutch that is again going to be able to take a shit kicking on the track but still be semi streetable?
-on the zf boxes can i swap the out put flange from my getrag 260 to the zf?
-what's the difference between e28 535i motor mounts and m5 mounts?

for any one wondering i am planing this swap for a 85e 5sp with lsd

[BenjaminButtton]

If you're planning on tracking the car I think you'd be a lot better off with the ZF.

I'm going to be using a g250 behind my M50TU, but the motor is totally stock and probably won't ever see a track, so hopefully it'll last a while.

There isn't a huge difference between M5 and B35 mounts.. I'm not entirely sure what the difference is (M5 is a little stiffer?). But if you're tracking the car you might want to go with a stiffer mount, some people have had these mounts break on them.

AKG makes a poly 24v swap mount, and several other companies do as well.

Do some searching and you'll find the answers to all your questions.

[Wanganstyle]

many questions
-what years were the zf310/320 trans fitted to e36
-how week is the getrag 250? will it stand up reliably to m50b25 with s50 cams and having the snot kicked out of it on the track?
-will urethane trans mounts cut it(http://www.iemotorsport.com/bmw/E30-...hanetrans.html) or are the 320i aluminum cups a must?
-whats a good hd clutch that is again going to be able to take a shit kicking on the track but still be semi streetable?
-on the zf boxes can i swap the out put flange from my getrag 260 to the zf?
-what's the difference between e28 535i motor mounts and m5 mounts?

for any one wondering i am planing this swap for a 85e 5sp with lsd

ZFsg310- 1995 M3 and 1991/92 525i
ZfSg320- 1996-1999 e36 M3/328i/z3 2.8/z3M and 1996-2001 e39 528i/530i and e46 330i/328i

ZF has 240mm clutch setup and 96mm guibo
G250 has 228mm clutch setup and 84mm guibo.

Bigger stuff is more durable and thus used in the big 5 series also.

New E36M/E46M OEM rubber transmission mounts can take 15-20 track days in a E36M on R comps. Hard poly/Urathane may be better for race only but less durable and cost more - extremely rough sometimes for street use.

Original E36M 240mm Dual mass clutch setup can take about 350rwhp turbocharged/supercharged/built NA or S54 swap engine.

25+ track days is more than possible with a skilled driver - Drifting abuse it can also take.

Flanges between Zf and G260 are not interchange; you will need to get a 96mm guibo driveshaft from manual 86/87 325e or E30M. OR Zf 5 speed driveshaft from e36M/e36 328i + e30 center bearing to match your chassis vin.

[bimmerboy4444]

thanks for the grate info i will defiantly have to track down a zf box

[Cyrix2k]

The 250 only has weak synchros - people run them behind boosted motors and S52s without them blowing apart. A NA M50 will do NOTHING to it.

[bimmerboy4444]

The 250 only has weak synchros - people run them behind boosted motors and S52s without them blowing apart. A NA M50 will do NOTHING to it.

good to know

but still prefer the zf
-didn't know thay cam in much newer cars so getting a good used one should be much simpler
-can run a stock m3 clutch good for dd ues but still last on the track
-6speed
-don't have to muck around with my drive shaft. my car is a 85 325e 5speed

[Wanganstyle]

The 250 only has weak synchros - people run them behind boosted motors and S52s without them blowing apart. A NA M50 will do NOTHING to it.

G250 is good enough for bmw to equip oem into a e34 525i; heavy ~3600 lb car with m50b25tu; a 2500lb e30 with same engine wont nearly stress the box and syncros as much as the heavy iron e34.

good to know

but still prefer the zf
-didn't know thay cam in much newer cars so getting a good used one should be much simpler
-can run a stock m3 clutch good for dd ues but still last on the track
-6speed
-don't have to muck around with my drive shaft. my car is a 85 325e 5speed

Lol zf sg320 and 310 is a 5 speed.

Zf 6 speed is in much newer cars and requires custom everything to fit into a e30; I have a photo install overview of this in my sig.

The e36 m3 clutch fits directly into your current g260 and m20 engine- gearbox does not care; they are all compatible.

I race a e30 with 24v m50 engine swap and zf sg320 5 speed from e36m3. We actually use a m20 flywheel and clutch! !

A g250 can also plug and play a e36m clutch setup.


Sent from my GT-N7100 using Tapatalk 2

[Cyrix2k]

good to know

but still prefer the zf
-didn't know thay cam in much newer cars so getting a good used one should be much simpler
-can run a stock m3 clutch good for dd ues but still last on the track
-6speed
-don't have to muck around with my drive shaft. my car is a 85 325e 5speed

I believe the clutches are interchangeable, they're all 5 speeds, and the 250 uses the same driveshaft as your '85 (I also have one and it bolts up). I believe the ZF requires an OBD-II e36 driveshaft. One difference to note is that the e36 transmissions have a 1:1 5th gear while the g260 has an overdriven 5th. Keep that in mind when doing the swap - if you have a short diff, you probably don't want an e36 box and vice versa.

[Wanganstyle]

I believe the clutches are interchangeable, they're all 5 speeds, and the 250 uses the same driveshaft as your '85 (I also have one and it bolts up). I believe the ZF requires an OBD-II e36 driveshaft. One difference to note is that the e36 transmissions have a 1:1 5th gear while the g260 has an overdriven 5th. Keep that in mind when doing the swap - if you have a short diff, you probably don't want an e36 box and vice versa.

they ARE interchangeable; proven all over the world.

I have raced a E30 325i with M50 24v engine swap+ ZF sg320 with M20 flywheel and M20 clutch.

I have driven also (in third world traffic) a E30 325iT touring with M20 engine, G260 gearbox and S52 flywheel and S52 clutch.

A friend installed:

ZF SG320 gearbox +E34 520i manual transmission swap; that car used a G250 clutchset and flywheel.

These clutch sets all direct interchange.

ZF sg320 in E30 body with 24v engine uses:

E30 1986 325e Eta 96mm driveshaft
E30M driveshaft (all)
E36 328i driveshaft
e36M driveshaft (4 bolt or 6 bolt; 6 bolt flange directly installs into any e30 6cyl diff).

[bimmerboy4444]

G250 is good enough for bmw to equip oem into a e34 525i; heavy ~3600 lb car with m50b25tu; a 2500lb e30 with same engine wont nearly stress the box and syncros as much as the heavy iron e34.



Lol zf sg320 and 310 is a 5 speed.

Zf 6 speed is in much newer cars and requires custom everything to fit into a e30; I have a photo install overview of this in my sig.

The e36 m3 clutch fits directly into your current g260 and m20 engine- gearbox does not care; they are all compatible.

I race a e30 with 24v m50 engine swap and zf sg320 5 speed from e36m3. We actually use a m20 flywheel and clutch! !

A g250 can also plug and play a e36m clutch setup.


Sent from my GT-N7100 using Tapatalk 2

blast i wanted a 6 speed oh well like i said in the title massive i can do the swap no problem just figuring out what will fit with what.


just a side note i haven't be able to find much about
what the hell is the difference between the zf 310 and 320


and just to get things straight and simple only trans from a 3'er is going to fit e30/e36?

[bimmerboy4444]

I believe the clutches are interchangeable, they're all 5 speeds, and the 250 uses the same driveshaft as your '85 (I also have one and it bolts up). I believe the ZF requires an OBD-II e36 driveshaft. One difference to note is that the e36 transmissions have a 1:1 5th gear while the g260 has an overdriven 5th. Keep that in mind when doing the swap - if you have a short diff, you probably don't want an e36 box and vice versa.

you are right a 250 would bolt up to my drive shaft (78mm) i miss read some info thought my drive shaft was a 96mm flange

does some on make a conversion guimbo from 78 to 96?