6 speed boxes for the M52
Discussion
I know the E36 M3 Evo box will work.
I know the E46 M3 box will work with an E46 clutch, flywheel and a 325i slave cylinder.
Are there any other 6 speed boxes that will bolt up to the M52 engine, and ideally use the M52 flywheel and clutch? For example, the 330d version? The 320d? Something from a 1er?
I know the E46 M3 box will work with an E46 clutch, flywheel and a 325i slave cylinder.
Are there any other 6 speed boxes that will bolt up to the M52 engine, and ideally use the M52 flywheel and clutch? For example, the 330d version? The 320d? Something from a 1er?
hi, i have just fitted a 6 speed out of a 330i E46 into my 328i E36. This is the same gearbox as the 320d and 330d, however the diesel versions have different gear ratios and the engines sit 10 degrees more upright. This would cause issues when fitting to a petrol model, new engie mounts would be needed.
Anyway back to the 330i box, the input shaft was alot shorter than the original box as the spigot bearing is mounted in the fly wheel, so in answer to your question, you will need to change the flywheel for the correct one to suit the box.
What i done though was looked on ebay and found a fly wheel and clutch from a 320d for under £80 , these are alot more readily available than the 330i ones, so was not a great expense. The only mod required to fit the diesel flywheel was the guide tube for the release bearing needed 10 mm taking off. The set back of using a diesel fly wheel is that it is slightly heavier, but you are unlikely to notice this when driving. You will need to take 4 inches off the propshaft and also fabricate a new gearbox support bracket. the original slave cylinder works however i need to put two washers on the studs before fitting it to the box as it was too close to the release arm.
in hinds sight E46 M3 box is probably alot easier also if it is going on a 328i i dont think you need to change the clutch and fly wheel as they are the same. This is 328 only with ZF box.
Hope this helps
Anyway back to the 330i box, the input shaft was alot shorter than the original box as the spigot bearing is mounted in the fly wheel, so in answer to your question, you will need to change the flywheel for the correct one to suit the box.
What i done though was looked on ebay and found a fly wheel and clutch from a 320d for under £80 , these are alot more readily available than the 330i ones, so was not a great expense. The only mod required to fit the diesel flywheel was the guide tube for the release bearing needed 10 mm taking off. The set back of using a diesel fly wheel is that it is slightly heavier, but you are unlikely to notice this when driving. You will need to take 4 inches off the propshaft and also fabricate a new gearbox support bracket. the original slave cylinder works however i need to put two washers on the studs before fitting it to the box as it was too close to the release arm.
in hinds sight E46 M3 box is probably alot easier also if it is going on a 328i i dont think you need to change the clutch and fly wheel as they are the same. This is 328 only with ZF box.
Hope this helps
That's interesting!
I wonder if just the front half of the prop could be changed for the matching one rather than having to get the prop modded.
Also I wonder where the M52TU fits into this as in many ways its closer to the M54 than the old M52, maybe it has the flywheel with the spigot in it already? Or maybe not... anyway I should sort my rear arches before worrying about 6-speeds
I wonder if just the front half of the prop could be changed for the matching one rather than having to get the prop modded.
Also I wonder where the M52TU fits into this as in many ways its closer to the M54 than the old M52, maybe it has the flywheel with the spigot in it already? Or maybe not... anyway I should sort my rear arches before worrying about 6-speeds

Hi. I know this is an old post but I have fitted an m54 to my E30 and have fitted a 320d 6speed box. I am having issues with it running rough when it gets hot. So much so it's not drivable after time and cuts out. Probly after 10 mins. Runs perfect when cold. I am wondering if my problem may be the crankshaft sensor......
I have fitted the 320d flywheel and clutch (2nd hand items as it was a test fit) should I also have changed the crankshaft sensor to match the flywheel?? Didn't have this issue with the E30 gearbox and have tried everything else. The crankshaft sensor has once came up as a shadow code but not saved on it.
Anyone have any thoughts on this. Any input would be appreciated before I buy a new crankshaft sensor and clutch and flywheel
Thanks
I have fitted the 320d flywheel and clutch (2nd hand items as it was a test fit) should I also have changed the crankshaft sensor to match the flywheel?? Didn't have this issue with the E30 gearbox and have tried everything else. The crankshaft sensor has once came up as a shadow code but not saved on it.
Anyone have any thoughts on this. Any input would be appreciated before I buy a new crankshaft sensor and clutch and flywheel
Thanks
Edited by Shaunlonergan on Saturday 23 January 20:54
Right I'll try unplug them and see how I get on. This is going to be long winded but here it goes. I'll take any help I can get.
So the m54 I have requires 2 post cat o2 sensors which I removed. I originally taught this was my issue as I was getting faults for them. And once the car would get hot and run "closed loop" it would run rough and eventually cut out. I got the original ecu reprogrammed, no more faults but still runs the same. Got a ews removed ecu also programmed for just the upstream sensors and no cats, still the same. Swapped one o2 sensor from another car I have as reading's were a bit funny, it no longer cuts out but still runs rough. Checked for intake leaks and can't find any. Also swapped the camshaft sensor
This all brings me back to my crankshaft sensor. So do any of ye know if I can run a 320d flywheel on the m54 crankshaft sensor. Come to think of it, I am correct in saying the crankshaft sensor reads the flywheel In these cars??
Thanks
Shaun
So the m54 I have requires 2 post cat o2 sensors which I removed. I originally taught this was my issue as I was getting faults for them. And once the car would get hot and run "closed loop" it would run rough and eventually cut out. I got the original ecu reprogrammed, no more faults but still runs the same. Got a ews removed ecu also programmed for just the upstream sensors and no cats, still the same. Swapped one o2 sensor from another car I have as reading's were a bit funny, it no longer cuts out but still runs rough. Checked for intake leaks and can't find any. Also swapped the camshaft sensor
This all brings me back to my crankshaft sensor. So do any of ye know if I can run a 320d flywheel on the m54 crankshaft sensor. Come to think of it, I am correct in saying the crankshaft sensor reads the flywheel In these cars??
Thanks
Shaun
Hi all. I had a look and the crankshaft sensor does not read from the flywheel so that hunch is gone. Can't be the gearbox causing my problem.
Tried changing maf sensor but no difference. I tried unplugging the o2 sensors but no change either just the shadow faults 90 to 93 (Inpa codes) still runs rough but only code ls coming up now are code 0 from INPA which is just an error and shadow of 133 Can timeout. Have no idea what that is from though
Worth a shot!
Tried changing maf sensor but no difference. I tried unplugging the o2 sensors but no change either just the shadow faults 90 to 93 (Inpa codes) still runs rough but only code ls coming up now are code 0 from INPA which is just an error and shadow of 133 Can timeout. Have no idea what that is from though
Worth a shot!
john1984 said:
hi, i have just fitted a 6 speed out of a 330i E46 into my 328i E36. This is the same gearbox as the 320d and 330d, however the diesel versions have different gear ratios and the engines sit 10 degrees more upright. This would cause issues when fitting to a petrol model, new engie mounts would be needed.
Anyway back to the 330i box, the input shaft was alot shorter than the original box as the spigot bearing is mounted in the fly wheel, so in answer to your question, you will need to change the flywheel for the correct one to suit the box.
What i done though was looked on ebay and found a fly wheel and clutch from a 320d for under £80 , these are alot more readily available than the 330i ones, so was not a great expense. The only mod required to fit the diesel flywheel was the guide tube for the release bearing needed 10 mm taking off. The set back of using a diesel fly wheel is that it is slightly heavier, but you are unlikely to notice this when driving. You will need to take 4 inches off the propshaft and also fabricate a new gearbox support bracket. the original slave cylinder works however i need to put two washers on the studs before fitting it to the box as it was too close to the release arm.
in hinds sight E46 M3 box is probably alot easier also if it is going on a 328i i dont think you need to change the clutch and fly wheel as they are the same. This is 328 only with ZF box.
Hope this helps
Hello John1984,Anyway back to the 330i box, the input shaft was alot shorter than the original box as the spigot bearing is mounted in the fly wheel, so in answer to your question, you will need to change the flywheel for the correct one to suit the box.
What i done though was looked on ebay and found a fly wheel and clutch from a 320d for under £80 , these are alot more readily available than the 330i ones, so was not a great expense. The only mod required to fit the diesel flywheel was the guide tube for the release bearing needed 10 mm taking off. The set back of using a diesel fly wheel is that it is slightly heavier, but you are unlikely to notice this when driving. You will need to take 4 inches off the propshaft and also fabricate a new gearbox support bracket. the original slave cylinder works however i need to put two washers on the studs before fitting it to the box as it was too close to the release arm.
in hinds sight E46 M3 box is probably alot easier also if it is going on a 328i i dont think you need to change the clutch and fly wheel as they are the same. This is 328 only with ZF box.
Hope this helps
I just got gearbox like yours for my 92 325is which unlike yours was fitted with Getrag 250 instead of ZF gearbox. Any chance I could get your assistance in getting little more detail about your gs6-37bz install?
Could you please pm me?
Thanks a bunch!
knosalaa said:
Hello John1984,
I just got gearbox like yours for my 92 325is which unlike yours was fitted with Getrag 250 instead of ZF gearbox. Any chance I could get your assistance in getting little more detail about your gs6-37bz install?
Could you please pm me?
Thanks a bunch!
Not sure you'll get much/any reply from him, considering it's about 8 years since he last posted.I just got gearbox like yours for my 92 325is which unlike yours was fitted with Getrag 250 instead of ZF gearbox. Any chance I could get your assistance in getting little more detail about your gs6-37bz install?
Could you please pm me?
Thanks a bunch!
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