E89 oil cooler

[john-e89]

Which is presumably the small cooler in the o/s front wheel arch. What a bloody silly place to put it, 350 miles in and already 2 tiny fins have folded in from stones, so how's it going to look and cool anything after 50k? There's ample room for it forward of the intercooler and if air flow from there is enough to cool the rad and compressed air then it's enough to cool the oil.

Anybody shed any light on this strange design? Just seems daft to me.

 

[andysat]

A bit like putting the roof motor in an e85 in a waterfall!

 

[abeardo83]

Which is presumably the small cooler in the o/s front wheel arch. What a bloody silly place to put it, 350 miles in and already 2 tiny fins have folded in from stones, so how's it going to look and cool anything after 50k? There's ample room for it forward of the intercooler and if air flow from there is enough to cool the rad and compressed air then it's enough to cool the oil.

Anybody shed any light on this strange design? Just seems daft to me.

I assume this is for a turbo-ed car? Don't think my 2.3i has one of them??

The Germans have always had a habit of doing some weird over engineering... Didn't one of the Diesel engines have its timing chain at the rear of the engine??

 

[techathy]

Because BMW didn't want pre-heated air going into the IC or radiator when the ambient temps are high? With the oil temps over 120C and 35C ambient conditions you could be seeing >50C air getting to the rad/IC.

 

[ronk]

The Germans have always had a habit of doing some weird over engineering... Didn't one of the Diesel engines have its timing chain at the rear of the engine??

The 2.7 Tdi Landrover engine has belts on the front and back of the assembly - the official method of change the belts at 105k or 7 years, was to lift the car from the chassis.

 

[john-e89]

Because BMW didn't want pre-heated air going into the IC or radiator when the ambient temps are high? With the oil temps over 120C and 35C ambient conditions you could be seeing >50C air getting to the rad/IC.

Hmm take your point techathy, I hadn't taken into account such high temps from the oil. Think they should make a decent shield in the arch though instead of some slightly angled vertical plastic 'gills', if the gills ran horizontally facing downward then they'd still vent hot air and stones would hit them taking the force out of them instead of the cooler fins. I going to look into some types of mesh that will vent but stop all but the tiniest stones, coolers going to be flattened at this rate otherwise.

 

[ronk]

Because BMW didn't want pre-heated air going into the IC or radiator when the ambient temps are high? With the oil temps over 120C and 35C ambient conditions you could be seeing >50C air getting to the rad/IC.

I've seen those high oil temps in the summertime pushing on up Alpine passes ! It scared me enough to slow down.
What was noticeable was how quickly the oil the temperature seemed to drop.