Oil cooler diverter valve

[The Gorilla]

Hi,

Quote - '' If you're using the same feed as the OE item for your water cooled Mocal item, which as stated limits the amount of oil it allows to flow past it, then surely your cooling method will be no better than the OE air to air item, as the issue isn't actually airflow through the oil cooler, but the amount of oil it actually allows to pass through the oil cooler?

Is this some form of new English being used as a trial basis
or is this for real ?

You should stop making those assumptions MikeR
as I thought we had cleared that up many moons ago.

Do you know how a laminova Oil to water heat exchanger
works as reading the above statement it does not
appear so, no more than you know how my system is
fitted and works ?

So you do not have to make any further assumptions
Mike here is a link to a picture.

https://nam3forum.com/forums/forum/csl-register/general/csl-photo-gallery/489136-e30-m3

Now before the Oil stat is even open my Oil to water Heat
exchanger is working away as its feed via the top of the oil filter and
goes back to the Oil fitlre block on the return side
where the std oil cooler returns to.

I run JIc 10 lines for flow and return to the Laminova not Mocal
heat exchanger.

This is always full of oil so on start up there is
no pressuring required and as the engine has a
55 deg water stat fitted the water rad operates quicker and
thus assists in heating up the engine oil quicker as the
water from the rad return is what cools the Laminova
as it passes thru it..

So far so good.

Then on Track when my oil hits 95 deg Guess what the Oil
stat opens ,you know the thing that you keep wanting to remove,
and I now have a Oil to Water heat exchanger working
to try and keep temps even, and as the oil temp
has moved up above 95 deg my oil stat opens, yes that
thing you want to bin, and the std Air to Oil cooler then
also comes into play at the same time'' as its also installed on JIc 10
lines and fitted via a 'Y' with non return valve into the
=oil return feed, and guess what that little bit
of free ambient air just nudges the temps back down
below 95, the oil stat shuts, but only if you still have one,
and the oil and water temps then behave themselves again
all being kept as constant as possible by the oil to water heat exchanger
until the next little rise in oil temp, mostly on the parts
where I get all carried away trying to be Hans Stuck.

As I said there is no free lunch.

So please no more Assumptions or Trial English.

Regards,

The Gorilla.

[Mike RT4]

Hi Danny,
Of course I know how one works, I had one on my Sierra over 15 years ago LOL,



But as you hadn't provided any explanation or information to the contrary, it was my belief that you had substituted the OE air to air item with the Laminova item, which just didn't make sense (for the reasons I gave above).

Now I can see that you have added the Laminova to supplement the OE air to air item, that does make a little more sense. However, the proof is in the pudding, as reading between the lines, this is how you are HOPING it will work, as it seems you haven't proved that yet .

I say that, as the one on my Sierra, didn't perform as well as I had hoped and I was still seeing 125°C oil temps on track in 30°C ambients.....

Anyway, surely the easy solution for the Oil cooler bypass valve is to just run a thermostat before the cooler, so that it doesn't allow the oil into this until it has reached the required temperature - job jobbed....

[karbonkid]

I've run a Motorsport stat for a while now. Recommend for a track car only.

Personally I would probably be more concerned about power steering temps and fit an additional cooler to help keep temps down there.

[alexk]

Hi Danny,
The way it works on the S54 engine is that it doesn't release all the oil through the cooler when it gets hot, so this is why you get excessive oil temps on track, as the oil cooler isn't being fully utilised.

Did they do an oil flow measurement with and without the thermostat ?
I am just curious why they are saying the thermostat is restricting the flow.

[The Gorilla]

Hi,

Quote- '' However, the proof is in the pudding, as reading between the lines, this is how you are HOPING it will work, as it seems you haven't proved that yet.

See there you go again with those Assumptions.

The Picture in the Link was circa 2009 and
its now 2014, but whatever MikeR.

Regards,

The Gorilla.

[Mike RT4]

Hi,

Quote- '' However, the proof is in the pudding, as reading between the lines, this is how you are HOPING it will work, as it seems you haven't proved that yet.

See there you go again with those Assumptions.

The Picture in the Link was circa 2009 and
its now 2014, but whatever MikeR.

Regards,

The Gorilla.

I like to follow your lead with the assumptions as I know how much you like them .

I've never seen you mention doing any track days with the car and I would have thought such a recognisable car would get photographed a lot.

So when are you next out in it ?

[shimmy]

My take on this is everybody is pissing in the wind and NOBODY has solved the underlying overheating issue with the S54

:whistle:

[Mike RT4]

Did they do an oil flow measurement with and without the thermostat ?
I am just curious why they are saying the thermostat is restricting the flow.

Yes, I have the figures on my computer at work, from memory they say that only a maximum of 40% of the oil is diverted through the oil cooler when it gets up to sufficient temp to open the diverter fully.

[Mike RT4]

My take on this is everybody is pissing in the wind and NOBODY has solved the underlying overheating issue with the S54

:whistle:

You would say that, but I don't see you trying anything beyond the norm :blalalala:.

[shimmy]

You would say that, but I don't see you trying anything beyond the norm :blalalala:.

I've learnt that me trying stuff Isnt really the best way to do things.......it's not like mucking round with an old Ford, I love my car.:thumbs: (and I have tried a few things actually)

Tbh I have now found the solution(s) and will try them next 24oC plus day.

[shane@mbtech]

My take on this is everybody is pissing in the wind and NOBODY has solved the underlying overheating issue with the S54

:whistle:

My car never suffered any overheating, ever. Non AC car with no AC fans restricting cooling flow.

[shimmy]

My car never suffered any overheating, ever. Non AC car with no AC fans restricting cooling flow.

My conclusion also, airflow

Restricted through a dense set of 2 fans and two rads and a load of plastic.fans being the culprit probably as they are both off on track.

[adem.csl]

My car has never suffered overheating either with a/c installed!!
My oil temps went to 150 deg but soon dropped on a cool down lap back down to 125deg..last July at brands but i did get stuck behind some cars at stages!!
At donnington in August i used some crap cup + then changed to csl cups and found more grip in corners as did billy when he drove it so we pushed it hard to a 1.36 lap and it never rose past 125 deg

[shimmy]

My car has never suffered overheating either with a/c installed!!
My oil temps went to 150 deg but soon dropped on a cool down lap back down to 125deg..last July at brands but i did get stuck behind some cars at stages!!
At donnington in August i used some crap cup + then changed to csl cups and found more grip in corners as did billy when he drove it so we pushed it hard to a 1.36 lap and it never rose past 125 deg

Cool down laps don't count :hahaha:

[adem.csl]

My conclusion also, airflow

Restricted through a dense set of 2 fans and two rads and a load of plastic.fans being the culprit probably as they are both off on track.

You only have one a/c fan infront of your rad and the condensor so yes both those things restrict airflow as well..
Do you plan on removing your a/c system?
The plastic bits are supposed to guide the air into the rads.
Do you think that loosing rubbish infront of the rads will help?i think your right shimmy!