m30 with m10 radiator?

[browntown]

well crap. Does the overflow need to be higher than the rest of the system? I know they make aftermarket aluminum catch cans, and I'd think about mounting one where the A/C dryer was if height wasn't a concern

[kronus]

Are you going to have a heater box? If not, you can hide the coolant overflow tank in there.

[CorvallisBMW]

Why not use the stock coolant tank? Or use an e34/e32 firewall-mounted triangle tank with the e28 rad.

[browntown]

Purely a cosmetic thing. I want a minimalist engine bay with as few wires/hoses as I can get away with.

I don't like the triangle tank, right now it sounds like my best option is a new *white* overflow tank. At least ditching the old yellow tank for new will make everything look tidier.

[Doughnut]

Purely a cosmetic thing. I want a minimalist engine bay with as few wires/hoses as I can get away with.

Its hard to make the engine bay look uncluttered with an m30.

Get the plastic covers for the firewall to cover your wiring and use a 325i overflow bottle in the stock location (left side wheel arch.)

Get an e28 radiator, they just work.

[Jean]

Yeah, the firewall mounted overflow tank from the 5/7 series sucks in terms of mounting/fitment.

[george graves]

The biggest issue is the location of the connectors on the radiator. The e28 just makes it easy.

[Leo_328i]

I used to own an E30 318i M10 and remember one pretty sunny day going for a hard drive in the countryside straining the motor at around 5500-6000rpm in 3rd gear going up a long and steep hill for about 2-3 minutes and I remember the coolant needle slowly moving past the 3/4 mark towards the red.

And that was in an M10 motor - wouldn't even bother considering an M10 radiator for an M30 if you live in anywhere that sees over 15 degrees c.