Overheating on track only - Page 10

**shimmy** · 07-07-2014, 01:35 PM

Quote:

Originally Posted by alexk

Next thing I am replacing is the temperature sensor.

But again, the manual says this is normal.

Are you still having problems Alex after your fan and shroud delete?

**alexk** · 07-07-2014, 01:39 PM

Quote:

Originally Posted by shimmy

Are you still having problems Alex after your fan and shroud delete?

The AC fan is off.
I have the clutch fan (I had another issue with the radiator) so until I find out the radiator was gone, I put back the clutch fan.
However, I have issue only on one road (tunnel) with low speed and it goes up to 96C.
It's so strange.

Saturday I will be in hot Monza so I will see if the car overheats or not.

Ali M · 07-07-2014, 06:57 PM

Quote:

Originally Posted by shimmy

So you are saying OeM rad is good enough, I still think we have not found the issue that is causing this, just various ways if masking it, let's not forget this issue occurs at full speed, maximum airflow theoretically, maximum cooling.

Still think it could be an airflow issue. Also let's not forget the fans do not work at high speeds, they are turned off.

Yes, the OEM rad is good enough. I would even disagree with Steven's post about his rad keeping temps down a little bit more as mine never once budged from middle of analogue gauge - his did rise at one point although think he was using AC on track.

I also ran mine on service mode and temps were around 88 degrees when on it. Think highest was 92

Steven and I both agree that it is an airflow issue, hence removing the AUX fan and shroud. It has 100% worked on my car to solve the issue.

I could possibly improve it further with bigger oil cooler and water wetter but just removing viscous and AUX fans + adding electric 16" Mishimoto fan behind stock rad has done the job.

Ali M · 07-07-2014, 07:14 PM

That is a lot of room for something to be taking up which is not even switched on above 88 ish mph

(Pic featuring StevenEK9 himself...)

So much more airflow to rads, oil cooler and PS cooler

Mishimoto 16" fan was around £65 delivered

Mounted. This is now run off the stock AUX fan controller (box with brown + blue wire) and functions as per the tables Alex (I think) posted earlier in thread. I.e. the ECU turns it on when it needs it. Have had the AC on full max fans at 16 degrees and the fan is still just enough to cool the car at standstill.

Threads on waterpump sticking out where viscous has been removed.

Cable tied stock AUX fan controller out of the way. Probably a better location but seemed easiest to me without extending stock wiring.

Gibbo · 07-07-2014, 07:40 PM

Hi there

Was at Donnington recently in about 22-24c sunny weather.

My car over-heated for first time:-
Oil temperature was 115c-120c so no issue there, its never reached 125c marker.
But coolant temperature touched the red, backed off and within seconds it was back to half way mark.
This was after about 20 minutes on track with a lot of passing other cars so not clear air.

But I've changed a few things at once on my car which could account for this or maybe just hot weather:-

1. CSL airbox fitted.
2. Viscous fan removed
3. Under-drive pulleys fitted.

My car is running Evolve Alpha-N remap, has Milltek 100 cel cats!

Ali M so have you removed both AC Fan and the viscous fan and then fitted that 16" fan? How is your car on the road in traffic, does it overheat?

Where did you buy the fan from for £65, is it easy to fit and wire in?

P.S. Where did you get your sticker number plate done as I shall do that to help with air flow as well?

**shimmy** · 07-07-2014, 08:09 PM

My next simple mods might be to removed front plate holder and remove pollen filter housing and see if air flow improves.

Graham · 07-07-2014, 08:19 PM

So from reading what everyone is writing the front fan literally just helps aircon at standstill or slow traffic?
So you can get rid of that straight away with no modification?

Then to make it even better you take the viscous fan out and put a mishimoto 16" fan in and wire it in using the wiring from the front aux fan?

This seems like a pretty easy and cheap mod if so.

Ali M · 07-07-2014, 08:20 PM

Hi Gibbo,

Yes, removed both AC (AUX fan and shroud shown held up in the pics) and the viscous fan. No overheating issues in traffic or on the road.

The highest I saw it read was 95 degrees when it had been sitting idling for 15 mins with no airflow with the AC on max just to test. Ambient temp was around 26 degrees at the time. In this situation the thermostat was obviously fully open and the Mishimoto fan at 100% with the AUX / ECU controller working the fan to pull as much heat out as possible - which it did.

Normal day to day round town even with AC on it is on average mid 80's and in which case the thermostat shouldn't even be open yet. On a hot day I would expect it to rise above 88 at which point the thermostat will open to circulate through the rad. The AUX fan controller will then function the fan depending on temp provided it is less than 80+ mph (not sure magic number it turns off).

Anything over that 80+mph and 88 degrees when stat opens and think it is just airflow alone through the rads doing the cooling.

Fan bought from here and fits exactly to the lips on top and btm of stock rad for mounting. Think I used M4 or M5 bolts - http://www.mishimoto.co.uk/mishimoto...-inch-fan.html

The number plate is an actual plate in legal font and although it is 3/4 size, it keeps the same height to width as legal font. Obviously opens up the airflow to front bumper a bit. Think it was from somewhere like 'fancy plates' or something. Never had an issue in 3 years running it from the BIB

Ali M · 07-07-2014, 08:28 PM

Quote:

Originally Posted by Graham

So from reading what everyone is writing the front fan literally just helps aircon at standstill or slow traffic?
So you can get rid of that straight away with no modification?

Then to make it even better you take the viscous fan out and put a mishimoto 16" fan in and wire it in using the wiring from the front aux fan?

This seems like a pretty easy and cheap mod if so.

Yes on the front AUX/AC fan as in, yes it just helps aircon & rad at standstill and slow speed.

However, I wouldn't recommend that this is removed on its own without fitting the new electric Mishimoto fan because I don't think the viscous fan would be anywhere near capable of pulling enough heat out of the rad with the AC on at slow vehicle speed.

I have heard of people removing viscous but keeping the AUX fan and no issues. However, I have not heard of anyone removing the AUX and just keeping viscous. Probably because the car will overheat pretty quickly.

IMO removing the AUX should go in hand with fitting the new electric fan (in this case a Mishimoto). It is doing the same job but it is just doing it as a 'puller' rather than a pusher. Acting as a puller fan has the advantage of not blocking all the airflow while at high speed.

Yes, just use stock wiring. Just stripped and crimped spade connectors and then it is done.

Gibbo · 07-07-2014, 10:20 PM

Thanks Ali

Any weight saving from changing AC fan to the 16" one?

Maybe that was my issue on track too as I was running with AC on, so does the engine run cooler with AC off when on track then?

I will also do as Shimmy says and when on track will remove front number plate/holder and the pollen filter housing.

View Poll Results: Does you car overheat on track in warm conditions?
I have NEVER had this and I have 200+ (OeM CSL) cell cats	12	42.86%
I have had this and have 200+ (Oem CSL) cell cats	8	28.57%
I have NEVER had this and I have 100 cell cats	6	21.43%
I have had this and I have 100 cell cats	2	7.14%
Voters: 28. You may not vote on this poll

07-07-2014, 07:14 PM	#94
Ali M Mode S1 - Starting Out Join Date: Oct 2012 Posts: 27 Casino cash: $807	That is a lot of room for something to be taking up which is not even switched on above 88 ish mph (Pic featuring StevenEK9 himself...) So much more airflow to rads, oil cooler and PS cooler Mishimoto 16" fan was around £65 delivered Mounted. This is now run off the stock AUX fan controller (box with brown + blue wire) and functions as per the tables Alex (I think) posted earlier in thread. I.e. the ECU turns it on when it needs it. Have had the AC on full max fans at 16 degrees and the fan is still just enough to cool the car at standstill. Threads on waterpump sticking out where viscous has been removed. Cable tied stock AUX fan controller out of the way. Probably a better location but seemed easiest to me without extending stock wiring. Last edited by Ali M; 07-07-2014 at 07:24 PM.

07-07-2014, 08:09 PM	#96
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	My next simple mods might be to removed front plate holder and remove pollen filter housing and see if air flow improves. __________________ .

07-07-2014, 07:40 PM	#95
Gibbo S2 - Picking it up Join Date: Jul 2009 Posts: 69 Casino cash: $737	Hi there Was at Donnington recently in about 22-24c sunny weather. My car over-heated for first time:- Oil temperature was 115c-120c so no issue there, its never reached 125c marker. But coolant temperature touched the red, backed off and within seconds it was back to half way mark. This was after about 20 minutes on track with a lot of passing other cars so not clear air. But I've changed a few things at once on my car which could account for this or maybe just hot weather:- 1. CSL airbox fitted. 2. Viscous fan removed 3. Under-drive pulleys fitted. My car is running Evolve Alpha-N remap, has Milltek 100 cel cats! Ali M so have you removed both AC Fan and the viscous fan and then fitted that 16" fan? How is your car on the road in traffic, does it overheat? Where did you buy the fan from for £65, is it easy to fit and wire in? P.S. Where did you get your sticker number plate done as I shall do that to help with air flow as well?

07-07-2014, 08:19 PM	#97
Graham S5 - Full Throttle Join Date: Mar 2012 Posts: 405 Casino cash: $7152	So from reading what everyone is writing the front fan literally just helps aircon at standstill or slow traffic? So you can get rid of that straight away with no modification? Then to make it even better you take the viscous fan out and put a mishimoto 16" fan in and wire it in using the wiring from the front aux fan? This seems like a pretty easy and cheap mod if so.

07-07-2014, 08:20 PM	#98
Ali M Mode S1 - Starting Out Join Date: Oct 2012 Posts: 27 Casino cash: $807	Hi Gibbo, Yes, removed both AC (AUX fan and shroud shown held up in the pics) and the viscous fan. No overheating issues in traffic or on the road. The highest I saw it read was 95 degrees when it had been sitting idling for 15 mins with no airflow with the AC on max just to test. Ambient temp was around 26 degrees at the time. In this situation the thermostat was obviously fully open and the Mishimoto fan at 100% with the AUX / ECU controller working the fan to pull as much heat out as possible - which it did. Normal day to day round town even with AC on it is on average mid 80's and in which case the thermostat shouldn't even be open yet. On a hot day I would expect it to rise above 88 at which point the thermostat will open to circulate through the rad. The AUX fan controller will then function the fan depending on temp provided it is less than 80+ mph (not sure magic number it turns off). Anything over that 80+mph and 88 degrees when stat opens and think it is just airflow alone through the rads doing the cooling. Fan bought from here and fits exactly to the lips on top and btm of stock rad for mounting. Think I used M4 or M5 bolts - http://www.mishimoto.co.uk/mishimoto...-inch-fan.html The number plate is an actual plate in legal font and although it is 3/4 size, it keeps the same height to width as legal font. Obviously opens up the airflow to front bumper a bit. Think it was from somewhere like 'fancy plates' or something. Never had an issue in 3 years running it from the BIB

07-07-2014, 10:20 PM	#100
Gibbo S2 - Picking it up Join Date: Jul 2009 Posts: 69 Casino cash: $737	Thanks Ali Any weight saving from changing AC fan to the 16" one? Maybe that was my issue on track too as I was running with AC on, so does the engine run cooler with AC off when on track then? I will also do as Shimmy says and when on track will remove front number plate/holder and the pollen filter housing.