Coolant Expansion Reservoir locations

[tjhartge]

This is a spin-off from the Post Your Engine Bay thread discussion on TonyTony's radical coolant location, which has set off a few, including myself to dig further into a possible location freeing up the cluttered area where the ABS is located

[DEV0 E30]

My fav: OEM M3 expansion tank, and OEM location.

S14, but you get the idea. I've seen in quite a few times with M/S5Xs.


uofom3's car.

[1990m3]

Mine is placed here to free up the clutter on the other side of the engine bay. Canton Mecca aluminum catch tank, about $55 locally.

[BeirBrennerE30]

how did you route your lower hose??? over the back of the engine?

[1990m3]

put a coolant hose in front of the aux fan to keep the engine bay clutter down, used two alumium L-shaped coolant pipes to go around the corners with no kinks. I pulled the motor to do some bodywork, I might do it differently the second time around. I had no issues with coolant temp or pressure, using a 16psi cap I think

[Tom944]

You can maybe also use the (euro?) e36 325i radiator with built in tank :

[rede30]

You can maybe also use the (euro?) e36 325i radiator with built in tank :

Isnt that just the e36 318 radiator? And you have such a hott bay.

[1990m3]

also the same as the radiator from myt e30 318is

[tonytony]

I did pretty much the same thing as 1990m3 did just i used the stock reservior, originally planned to route it behind the enigne but space was tight. it's working fine so far and the coolant hose is not as close to the manifold as one would think.

[Tom944]

Isnt that just the e36 318 radiator? And you have such a hott bay.

Tnx ;)
The size of the rad is the same as from a e36 325i racecar of a friend of mine. We had a small discussion in the engine bay thread and some thought that the US size might differ from the size of the Euro radiator. Don't know for sure though.