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M3 Track: Racing and DE Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start!


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Old Mon, Jul-10-2017, 11:20:58 PM   #1
M3Reloaded
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Default Overheating SMG

Last weekend I had a race in hockenheim at an outside temperature of 36 degree Celsius.
In the first lap my smg was shifting perfectly but in the second lap I already got problems shifings in 6 th great. It was scratching like hell.
After a while of driving I was only able to use 4th and 5th gear.
When it is cold outside it is no problem.

Are there any cooling kits fur smg fluid and gearbox oil?






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Last edited by M3Reloaded; Mon, Jul-10-2017 at 11:25:11 PM.
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Old Tue, Jul-11-2017, 12:20:44 AM   #2
John_T
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Default Re: Overheating SMG

In addition to checking out your whole engine cooling system, there is the SMG unit relocation mod.

http://www.m3forum.net/m3forum/showthread.php?t=568580

You might want to look at this too...

http://www.m3forum.net/m3forum/showthread.php?t=413137
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Old Thu, Jul-13-2017, 02:31:41 AM   #3
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Default Re: Overheating SMG

No standard kits. If people collected data on trans temps more people would install trans coolers. I ran MT90 for two weekends and it looked pretty dark although my trans was close to death.

You'll need to make your own. I plan to install one using eBay components. Cost should be less than $350.


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Old Sat, Jul-15-2017, 06:48:22 PM   #4
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Default Re: Overheating SMG

Relocate the SMG unit as John t suggested. That should make a huuuuge different in temperature. A must do for a track car with SMG.

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Old Mon, Jul-17-2017, 10:46:38 AM   #5
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Default Re: Overheating SMG

I drove my race car 3 years with SMG.

I had a cooling of the gear box with an electrical pump and a small cooler in the front bumper. That works and is less effort than relocating the whole SMG unit.

Ask Tom Schirmer at the Nürburgring he can do that for you.
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Old Wed, Jul-26-2017, 07:41:54 PM   #6
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Default Re: Overheating SMG

Quote:
Originally Posted by Volker_VV View Post
I drove my race car 3 years with SMG.

I had a cooling of the gear box with an electrical pump and a small cooler in the front bumper. That works and is less effort than relocating the whole SMG unit.

Ask Tom Schirmer at the Nürburgring he can do that for you.
but that is not cooling the smg fluid. relocation kit seems the way to go. maybe even a larger capacity tank for the system would help
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Old Wed, Jul-26-2017, 07:50:33 PM   #7
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Default Re: Overheating SMG

any info on that awesome car? especially the splitter


Quote:
Originally Posted by M3Reloaded View Post
Last weekend I had a race in hockenheim at an outside temperature of 36 degree Celsius.
In the first lap my smg was shifting perfectly but in the second lap I already got problems shifings in 6 th great. It was scratching like hell.
After a while of driving I was only able to use 4th and 5th gear.
When it is cold outside it is no problem.

Are there any cooling kits fur smg fluid and gearbox oil?






https://instagram.com/p/BWTYLdkgkeU/
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Old Wed, Jul-26-2017, 07:56:41 PM   #8
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Default Re: Overheating SMG

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Originally Posted by pat-b View Post
any info on that awesome car? especially the splitter

I did everything possible to make it as fast as possible.
500hp supercharged - 1400kg including me.




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Old Thu, Jul-27-2017, 07:45:57 PM   #9
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Default Re: Overheating SMG

just eating those cars alive
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Old Mon, Aug-07-2017, 10:47:28 AM   #10
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Default Re: Overheating SMG

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Originally Posted by pat-b View Post
but that is not cooling the smg fluid. relocation kit seems the way to go. maybe even a larger capacity tank for the system would help
works for me the last 4 years racing over 10 events/year.
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Discussing Overheating SMG in the M3 Track: Racing and DE Forum - Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)