Oil cooler on a BB512 Boxer?

Hello,

How many off you have fitted an oil cooler on the boxer?
With normal use I do not have any problems with the oil temperature but when using the boxer on a race track or when driving on the German autobahn with speeds above 200km/h the oil temp. goes above 130Celcius after 25 minutes and I need to stop or lift off the gas pedal.
The cooling fluid stays on a perfect 90 to 100Celcius and only in traffic will it rise to over 110Celcius.
I am now building a oil cooler in the return oil line to the dry-sump tank.
I think the oil gets so hot because it gets pumped right out of the engine block before it has a chance to cool down in the sump area buy the cooling fluid. This needs to be to create an under pressure inside the crankcase so the pistons can move faster. There is also a lot off air being pump out of the crankcase with the oil this way.
When the oil gets this hot inside the dry-sump tank it will not easily cool down because it is tucked away from any cool air.

Maarten

 

I would think most after market oil coolers could be made to work. Keep us informed on how you design your system including what parts you use...I may want to do the same thing with my BBB512i.

 

I could've swore Boxers came with oil coolers stock????? My TR has it with two fans too! Am I wrong? ( Never owned or even drove one so...)

 

Early 365BB had one, 512 did not.

 

gotcha.....

 

I wonder it that one could be retrofitted to the later models?

 

They're junk thats why they stopped using them, good luck locating one too. Looks similar to the 246 cooler. Cant apply it to a drysump application anyway, no room.

 

Maybe stack it behind the radiator on a BB?
But then you'd have to run pipes up forward through areas were there might, or might not, be room.

Maarten, maybe check your cooling system for air, or thermostat operation, as my BB never even hits 100C while sitting completely stopped in traffic in 85 degree F weather.

John

 

I do not want to run the oil lines all the way to the front. Too much can go wrong there along
the way.
I have the ANSA sports exhaust fitted and so I have room left at the back off the car.
I will place the cooler on the right side off the car behind the rear wheel well.


I have checked that over and over and fitted an new thermostat so ther is air in the system.
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Why not in that same space on the left side of the car...it would be closer to the oil tank and lines?

 

Before you put an oil cooler on the car I would verify the oil temp is what the gauge says it is. A friend with a BBi went through the same BS with his coolant temp, changed the rad and everything you can think of (except the gauge) and it didnt fix it. One day when it read high he tapped the glass lens of the gauge and guess what? The gauge read normal LMAO! I still wont let him live that down and that was a so-called private ferrari shop in town that spent his money mis-diagnosing it. Always verify the gauge is accurate before going in circles for no reason.

 

Newman, BB's do get very hot on the track or any high speed top gear run. In fact it usually limits the top speed. Scary high (much higher than the gauge shows) oil temps on the track are the norm.

I have worked on BBLM's and they have a huge oil cooler in the nose.

I do not think a cooler buried in the space behind the rear wheel with its limited space and air flow will be much use but it can't hurt either.

 

I dont doubt it but my oil temp never goes over half on the gauge and its been on the track too. A BBLM makes twice the HP a stock boxer does so I can see the need there.

 

Because I use -16 hose (Ø 30 mm) from Goodridge en you do not have the room on that side to make the turns (need a minimum of 30 cm for 180 degrees ) back

 

This year at the Modena track days in Germany at the Nurburgring I spoke with all the BB drivers there on the track,
All six of them had the same problems: overheated brakes en oiltemp. off the scale.
The car is(too)heavy for track use.

I am not simple putting the cooler just there, but I am making a nice design so that when needed I can open a valve and cool air from under the car is going too the cooler.

Not simple but I have seen one before and it really worked.

Maarten
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Looks nice and if it helps then do it. You're right its not a good track car.