Why do BMW's I6 engines generally run hot?

[Kershaw]

my car (with chinese ebay mishimoto knock off aluminum radiator) runs at 1/4 temp unless i've been sitting in traffic for 10+ minutes.

[Todd Black 88]

Huh? It is supposed to do that. Hook it up to a proper sender, of the right Temp, and it will turn itself on and off where it is supposed to.

I have only an electric fan on my car, and the fan is hooked up to a two speed fan switch at 80*c and 88*c. My car sits a hair below center all the time. On the hottest of days, driving hard for hours on end, it never goes over half.

My car also still has ac. The aux fan cools my car just fine all by itself, but I don't live in the smoking hot climates either.

[lukeADE335i]

the aux fan wont keep the engine cool by itself

It will if there's no air conditioner condenser in the way (& you re-mount it up against the radiator core).

I'm running an e32 aux fan on my M30 swap & I have no over heating issues. Used to run a 12 inch Mercedes aux fan on my old e21 (smaller than the e30) and it also worked fine.

[MR 325]

Non a/c cars don't have an aux fan since there isn't the obstruction of a condenser in the way of the radiator. Tow a 1500 lbs (or full euro-style and tow 3000lbs - lol) trailer uphill and that aux fan will come on ;D

I actually used to have a trailer. ;) Not 1500lb but heavy enough when it was loaded down. ;)

Never had an issue.

[RUFFLZ]

how do I wash bae?

[socalife]

Just stfu^ gosh, my questions have been answered and i dont need any further non sense

[slammin.e28]

Why do engines run?

[HennaE30]

because the 87 Bmw 325i m3 clone have the v6



http://charlotte.craigslist.org/cto/4725865399.html

Lol so I'm gonna go get some M badges, cuz apparently that makes your car an M3 clone.

[Julien]

Why do BMW I6 engines have 6 cylinders?

because the 87 Bmw 325i m3 clone have the v6

http://charlotte.craigslist.org/cto/4725865399.html

[slammin.e28]

Why do BMW I6 engines have 6 cylinders?

[Julien]

MR 325 is correct, if the aux fan comes on when A/C is not on then you have an issue. Even on a modified stroker engine i could never get the aux fan to work unless the A/C was on. it just never got hot enough even on a 113 summer day.

i would look at at as a backup device at best and if it comes on regularly the cooling system needs to be fixed

I've owned multiple E30's with the AC removed which means there is no AUX fan to come on... All of my E30's have been well maintained and have NEVER had cooling issues. Even on the hottest 110 degree California days under full load uphill or sitting in traffic my cars would NEVER pass the halfway point. So I'll stick with my advice in saying that you should never need the AUX fan to keep a car cool if the AC is not running.

Non a/c cars don't have an aux fan since there isn't the obstruction of a condenser in the way of the radiator. Tow a 1500 lbs (or full euro-style and tow 3000lbs - lol) trailer uphill and that aux fan will come on ;D

[camshaftgsxr]

the aux fan wont keep the engine cool by itself

[socalife]

To MR325, are you talking about an m20 or m50? Because i have an m50b25tu and their is barely any room for a stock fan which is why i installed the aux...

[BLACKCHARM88]

Because they can...

[MR 325]

false, or else they wouldn't have added a thermocouple to the side of the radiator :)

I've owned multiple E30's with the AC removed which means there is no AUX fan to come on... All of my E30's have been well maintained and have NEVER had cooling issues. Even on the hottest 110 degree California days under full load uphill or sitting in traffic my cars would NEVER pass the halfway point. So I'll stick with my advice in saying that you should never need the AUX fan to keep a car cool if the AC is not running.