Oil cooler diverter valve

[AlexGTT]

I'm dropping the m3 at Simpsons for them to reinforce boot and add some more rear cage bits. Will be end of February. I'll give you a shout when I know exact dates. :thumbs:

It's a date. Probably drop in for cuppa with Ant Monday. Will tell him to get his customer entertainment expenses out ready.

[stevenEK9]

Digging up this thread again...........

was at DN9 at the ring last year, near on every E46 M3 (including mine) had elevated coolant temps. running with the heaters full chat just about kept them stable but of course not ideal as you end up a sweaty mess when it's 30 deg outside

at the time my e46 was standard engine wise but with brand new genuine radiator & thermostat

anyone fitted a larger capacity radiator such as this?

http://www.turnermotorsport.com/p-187009-e46-m3-fluidyne-turner-aluminum-radiator-upgrade.aspx

in my old EK9 civic i replaced the standard half size radiator with a koyo one (4 times as big pretty much) and even with mega oil temps the coolant would never ever budge above 80 degrees - very effective

cheers

[Mike RT4]

Digging up this thread again...........

was at DN9 at the ring last year, near on every E46 M3 (including mine) had elevated coolant temps. running with the heaters full chat just about kept them stable but of course not ideal as you end up a sweaty mess when it's 30 deg outside

at the time my e46 was standard engine wise but with brand new genuine radiator & thermostat

anyone fitted a larger capacity radiator such as this?

http://www.turnermotorsport.com/p-187009-e46-m3-fluidyne-turner-aluminum-radiator-upgrade.aspx

in my old EK9 civic i replaced the standard half size radiator with a koyo one (4 times as big pretty much) and even with mega oil temps the coolant would never ever budge above 80 degrees - very effective

cheers

I was at the same event and I had my aircon running all the time due to the high ambients and never had any water temp issues (never went beyond half way), but my oil temp did regularly go to the ¾ mark (and on a hot lap, a fraction beyond). However, I only ever did one lap at a time (followed by a strict cool down regime of doing a "lap" around the the village (by turning right out of the circuit and then keep turning right until I returned to the main entrance - a good couple of miles)).

I also had my front number plate removed for maximum air flow.

My car is completely standard engine wise (just a Supersprint exhaust).

Based on this, I got the Bimmerworld oil cooler:

http://store.bimmerworld.com/bimmerworldcr-racing-e46-m3-oil-cooler-p1517.aspx

However, I've yet to experience conditions similar to DN9 since fitting it.

[shane@mbtech]

Again, my car never overheated at the ring in circa 29-30* temps.
Again my car has no aircon. Its got to be a air flow issue with the fans blocking flow, the aircon rad blocking flow.

I'm tempted to remove my A/C. window open is enough:smokin:

Digging up this thread again...........

was at DN9 at the ring last year, near on every E46 M3 (including mine) had elevated coolant temps. running with the heaters full chat just about kept them stable but of course not ideal as you end up a sweaty mess when it's 30 deg outside

at the time my e46 was standard engine wise but with brand new genuine radiator & thermostat

anyone fitted a larger capacity radiator such as this?

http://www.turnermotorsport.com/p-187009-e46-m3-fluidyne-turner-aluminum-radiator-upgrade.aspx

in my old EK9 civic i replaced the standard half size radiator with a koyo one (4 times as big pretty much) and even with mega oil temps the coolant would never ever budge above 80 degrees - very effective

cheers

[stevenEK9]

I remember the car, Laurence did a bit of laptop trickery for you at some point?!

see i was the opposite, oil temps never exceeded 3/4, water temps was the issue

i would like to retain the AC, so think a more efficient radiator would work better for me

i'm now running a CSL rep bumper so can run it as below for track days without the plate to minimise any airflow disturbance up front also

I was at the same event and I had my aircon running all the time due to the high ambients and never had any water temp issues (never went beyond half way), but my oil temp did regularly go to the ¾ mark (and a little beyond). However, I only ever did one lap at a time (followed by a strict cool down regime of doing a "lap" around the the village (by turning right out of the circuit and then keep turning right until I returned to the main entrance - a good couple of miles)).

I also had my front number plate removed for maximum air flow.

My car is completely standard engine wise (just a Supersprint exhaust).

Based on this, I got the Bimmerworld oil cooler:

http://store.bimmerworld.com/bimmerworldcr-racing-e46-m3-oil-cooler-p1517.aspx

However, I've yet to experience conditions similar to DN9 since fitting it.

[Mike RT4]

I remember the car, Laurence did a bit of laptop trickery for you at some point?!

see i was the opposite, oil temps never exceeded 3/4, water temps was the issue

i would like to retain the AC, so think a more efficient radiator would work better for me

i'm now running a CSL rep bumper so can run it as below for track days without the plate to minimise any airflow disturbance up front also

Hi Steve,
He did indeed - one of the wheel-speed sensors decided it had forgotten how to communicate with the ECU, so had to be re-coded .

Mmmm, bizarre how the "getting hot" symptoms seem to vary from car to car. Either suffering from high oil temps OR high water temps.

[Ali M_csl]

My car was behaving pretty much just as Steven's on DN9, oil was fine but water was nudging up to the red. I kept an eye on it and turned on the heaters to full whenever it started to climb.

I think we saw up to 33 deg ambient although keeping the rear pop windows open made it just about bearable :119:

I have a slightly smaller 3/4 plate which allows full airflow so no issues there.

My car was on original rad/waterpump/thermostat (to best of my knowledge) but was only around 35K miles, so would hope that all is well there (although not ruling out).

Lawsy - I read your AC comment earlier in thread and it matches comments from guys in the states with E46M track/race cars - biggest single difference they say was removing AC and actually getting some decent flow to the rad.

I think the 'Gorilla' (possibly someone else) mentioned along the lines of the 46M/CSL rad nearing its capacity and just seems when used hard it starts to boil.

On DN9 I was doing multiple laps, usually in batches of 3.

With DN10 being in July and wanting to have 2 days hard lapping/multiple laps at a time, I need to get something working before this.

Worth mentioning that DN days have the main straight so cars are at WOT for 20+ secs

Tempted to look into removing AC for the trip but not really keen if it is a pain to put back in again as its a road car at the end of the day.

[rstoughy]

No issues with my temps except when running close behind an r8. Only then did they rise to the top of the scale but once past and back in clean air all was good :smokin:

[Ali M_csl]

This was an interesting read - http://www.m3forum.net/m3forum/showthread.php?t=445368

From what I remember (not read in a while) a few guys were going to try water wetter & distilled water or similar in a bid to lower temps without removing AC.

Interesting after reading Gorilla's point on coolant mix

[_Nathan_]

Hi Steve,
He did indeed - one of the wheel-speed sensors decided it had forgotten how to communicate with the ECU, so had to be re-coded .

???

Heard it all now, wheel speed sensors forgotten how to communicate? :119:

[Mike RT4]

???

Heard it all now, wheel speed sensors forgotten how to communicate? :119:

It was very bizarre. A simple reset would not turn the warning off. In the end, the only thing that would was for the ECU to relearn the sensor (or have it reassigned or what-ever you want to call it).

This was when I had allowed the battery to run low on voltage by running a tyre compressor off the cigarette lighter, without the engine running (the car started immediately afterwards and the light came on after a few miles of driving). The sensor was not disconnected at any time, but the ECU could not detect it was present until it was specifically told to "look" for it.

[stevenEK9]

what are peoples opinions/thoughts about removing the viscous fan and replacing with a slim electric puller?

removing the AC isn't an option for me, as much as this offers a first pass of clean air into the radiator

BUT

way i see it is the viscous fan doesn't exactly offer a clean path for the air to exit once it has passed through the radiator


even my 21 year old Audi S2 runs an electric fan and can regulate temps ok :hahaha:


slim fan can be controlled by something like this

http://www.demon-tweeks.co.uk/motorsport/fan-controllers-thermostats/revotec-electronic-fan-controller

leaving the OEM aux fan there as a backup if the slim fan was to fail

[Mike RT4]

what are peoples opinions/thoughts about removing the viscous fan and replacing with a slim electric puller?

removing the AC isn't an option for me, as much as this offers a first pass of clean air into the radiator

BUT

way i see it is the viscous fan doesn't exactly offer a clean path for the air to exit once it has passed through the radiator


even my 21 year old Audi S2 runs an electric fan and can regulate temps ok :hahaha:


slim fan can be controlled by something like this

http://www.demon-tweeks.co.uk/motorsport/fan-controllers-thermostats/revotec-electronic-fan-controller

leaving the OEM aux fan there as a backup if the slim fan was to fail

I was lead to believe from the American forums that the OE ECU can control the SPAL fans - you just need to wire them up to the factory controller?

I was also thinking about the cooling issues on my car (or lack of them) and wondered if perhaps the Vorsteiner front spoiler helped direct some more air into the radiator mouth on the bumper, where the OE set up does not? Just a thought....

[shimmy]

what are peoples opinions/thoughts about removing the viscous fan and replacing with a slim electric puller?

removing the AC isn't an option for me, as much as this offers a first pass of clean air into the radiator

BUT

way i see it is the viscous fan doesn't exactly offer a clean path for the air to exit once it has passed through the radiator


even my 21 year old Audi S2 runs an electric fan and can regulate temps ok :hahaha:


slim fan can be controlled by something like this

http://www.demon-tweeks.co.uk/motorsport/fan-controllers-thermostats/revotec-electronic-fan-controller

leaving the OEM aux fan there as a backup if the slim fan was to fail

read this first

https://nam3forum.com/forums/forum/csl-register/general/csl-technical-area/523481-auxillary-fan-operation

[AlexGTT]

Mine never got too hot at the Ring. Only shorter tracks.