Why do BMW's I6 engines generally run hot?

[socalife]

But it takes time for it to turn on when i need it most

[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.

[efficient]

you guys think the fan shroud is crucial?

[redsubdivisions]

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.

E32 fan switch? I have that running on mine as well if so.

[Kevinl]

Should be e36 318is switch

[Bearmw]

A shroud is helpful for any fan.

[Mr. Tasty]

you guys think the fan shroud is crucial?

of course it is.

[Hooffenstein HD]

2.7i swap with an M42 radiator and an eBay 16" pusher fan wired to a 316ti fan switch. For the most part the temp gauge stays just under the half way mark but it creeps up to just over and the fan turns on. The fan will only ever turn on after 10+ minutes in stop, go traffic conditions though. Can drive it hard through the hills for hours on end and it stays below half.

With all that said, if I open the bonnet at any given time, it will blast out quite a bit of heat. Probably from all the metal heat soaking. Nature of the beast.

[HennaE30]

Why do BMW's I6 engines generally run hot?

My car only runs slightly warm during the 110 degree summers here, but that's partly because I'm missing a shroud clip and I'm never highway driving, always light to light.

The engine bay heat is just the heat being purged from the motor

[TheTacoMan]

Shouldnt be that way, my intake manifold is almost cold to the touch after a couple of pulls. With meth;D

[nyChris]

http://www.r3vlimited.com/board/showthread.php?t=210783

[MR 325]

I guess i wasnt descriptive enough, but what i mean is i dont have stock fan that hooks up to the alternator belt because it doesnt fit.

Why doesn't it fit?

you guys think the fan shroud is crucial?

Yes.

[socalife]

I put a bigger radiator in thats why, but i could make it fit by shaving the edges but the fan would be to flat and wont be effective. Plus i have no room for a shroud. Anyways tomorow im taking it in to put a switch that should turn on automatically, that way i would only have a fan in front of the radiator. Btw does anyone know if certain antifreeze cools better then others? or are they all the same?

[socalife]

Btw, thanks for the link i wish i would've searched but i intended to make this thread about the heat wave i get from pulling the hood with a m50 rather then the m40 i used to have. It turns out its just heat build up from all the mpower under the hood hahahaha( exhaust manifold and what not)

[nrubenstein]

I guess i wasnt descriptive enough, but what i mean is i dont have stock fan that hooks up to the alternator belt because it doesnt fit. Instead i bought an electric fan that actually cools the engine really good. The only problem is that i wired it to a misc. button since i didn't know their was another way. So, i either drive with it always on which ends up leaving the needle on the first white tick or i try to keep an eye on it and let it bounce around the half tick or i end up forgetting which resulted me into almost overheating twice. Anyways, i guess i understand our cars are normal but can i have more info on hooking it up to a timer. Thanks!

Pick up the diesel fan and it'll fit with a standard E36 clutch (and some fiddling). Grab a 324td fan clutch, and it'll fit easily.