M3 track day car conversion

All the info you need to race E30's

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M3Compact
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Fri Nov 02, 2007 8:04 pm

Congrats UweM3, very nice car. 8)
UweM3
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Fri Nov 02, 2007 9:20 pm

ed325i wrote:
UweM3 wrote:
buster wrote:i thought you need to use e34 540 calipers for this brake conversion. ?
Im going to do this on mine as i felt the standard brakes were ok around croft,they could have been better.
E32 735i, E32 750i, E34 540i all the same.
just watch out for the E32 730i which is 302 as well, but a thinner disk.
The e32 735i one is the same as the 730i
The 750i/540i ones are wider.
100% shure?? I have calipers from a 735 fitted. With a 28mm disk.
Will have a look in the ETK but believe I have done that already before buying the 735 calipers.
ed325i
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Fri Nov 02, 2007 9:30 pm

When I done my 312mm conversion using the Audi TT disc I got some 735 cailpers and they didnt fit, so I had to get the wider 750 cailpers and I am sure demlot done the same.
UweM3
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Sat Nov 03, 2007 9:24 am

just had a look in the ETK.
735i is fitted with a 302x28mm disk
750i is fitted with a 302x28mm disk
E34 540i is fitted with the same 302x28mm disk.
And ALL do list the same caliper.

only certain years of E32 730i M60 are fitted with a 302x22mm disk. That's the one to avoid. (guess how I found out...)
Some years of the 730i M60 seem to have the 28mm disk as well, but I would stay clear of that model if you can't make sure wich one it is.
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e30matt
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Sat Nov 03, 2007 12:16 pm

@ agent006:

If you had a crash big enough to move the rollcage that far then the last thing you'd
be worried about is that hook. For that to hit you, first the roof bar, a pillar and screen
tube would have hit you!!! :eek:
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