ok, another temperature issue - Page 4

7.77 · 25-08-2009, 02:51 PM

ok, so what should be the best size for the oil cooler ??

is 235mm x 235 mm ok ?

**shimmy** · 25-08-2009, 02:54 PM

no idea.....

but it think oil cooler and new water rad is a good first effort to solve the problem

my water rad looks like it has ben trough the gulf war on the front! could easily be reduced performance tbh

7.77 · 25-08-2009, 02:57 PM

mine checked by bmw with no prob.....so i choose the oil cooler first

the size from vac is 11'x11' (27cm x 27 cm = 729 cm²), to have the same cooling area from mocal (think automotive), it must be the 23,5 cm x 34 cm (44 row)= 799 cm², isn't it too big ??

**AlexGTT** · 25-08-2009, 04:10 PM

Quote:

Originally Posted by shimmy

no idea.....

but it think oil cooler and new water rad is a good first effort to solve the problem

my water rad looks like it has ben trough the gulf war on the front! could easily be reduced performance tbh

This is a big factor. The amount of insects and general s**t stuck in the fins of the rad, air con rad, oil cooler will have an effect. A rad removal and good clean will help.

**glendog74** · 26-08-2009, 10:41 PM

Noticed my water temp needle move for the first time over the weekend at the Ring. It shifted to the right of middle (normal) operating temp.

Oil temps were as per the norm for Ring use (around 115-120 degrees)

Ambient air temps at the track were between 25-30 degrees Celsius.

Car performed as normal.

**shimmy** · 27-08-2009, 04:36 PM

Do any of you techinical gurus know if the engine temp (rising to red on track after 4-5 laps) and throttle irregularity (at various points) could e caused or linked by something (sensor)

I had throttle sensor changed after Spa limp mode, and exhasut sensor changed more recently?

shane@mbtech · 27-08-2009, 10:14 PM

Quote:

Originally Posted by shimmy

Do any of you techinical gurus know if the engine temp (rising to red on track after 4-5 laps) and throttle irregularity (at various points) could e caused or linked by something (sensor)

I had throttle sensor changed after Spa limp mode, and exhasut sensor changed more recently?

Thats funny because i had my exhaust temp sensor replaced today at bmw and whilst on my way home i noticed the coolant level moving towards 2/3 area whilst in slow moving traffic, its not done that since i had viscous fan change

**shimmy** · 10-09-2009, 11:28 AM

Ok

So after reading many posts on this it seems to result in the following;

The guys who have witnessed high (and i mean towrds red line) water temps ON TRACK after 4-5 laps ususally in warm weather, have chased down various water cooling faults but never managed to fix. People have changed stat, pump, rads, sensors but seems no joy.

So let us presume for a minute that water temp highs are a symptom and not a cause of the problem!

I have found a few poeple post that they have solved the issue by replacing coils. injectors or sensors that are cusing they presume hig cylinder temps probably due to running lean due to these faulty bits. Thorney also has said on another forum that degrading coils or injectors could cause the high temps on track.

So come on guys, thoughts please!!

**glendog74** · 10-09-2009, 12:12 PM

Quote:

Originally Posted by shimmy

So come on guys, thoughts please!!

I'm thinking i'd rather be on track than sat in this office...

**AlexGTT** · 10-09-2009, 12:38 PM

Quote:

Originally Posted by glendog74

I'm thinking i'd rather be on track than sat in this office...

Pipe down Rob. Recent Ring trip and two trackdays this week! Your breaking my heart.

25-08-2009, 02:57 PM	#33
7.77 S5 - Full Throttle Join Date: Dec 2008 Location: france Posts: 284 Casino cash: $4221	mine checked by bmw with no prob.....so i choose the oil cooler first the size from vac is 11'x11' (27cm x 27 cm = 729 cm²), to have the same cooling area from mocal (think automotive), it must be the 23,5 cm x 34 cm (44 row)= 799 cm², isn't it too big ?? Last edited by 7.77; 25-08-2009 at 03:26 PM.

26-08-2009, 10:41 PM	#35
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	Noticed my water temp needle move for the first time over the weekend at the Ring. It shifted to the right of middle (normal) operating temp. Oil temps were as per the norm for Ring use (around 115-120 degrees) Ambient air temps at the track were between 25-30 degrees Celsius. Car performed as normal. __________________ Cha'mone Mother F**ker!

27-08-2009, 04:36 PM	#36
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	Technical guru help Do any of you techinical gurus know if the engine temp (rising to red on track after 4-5 laps) and throttle irregularity (at various points) could e caused or linked by something (sensor) I had throttle sensor changed after Spa limp mode, and exhasut sensor changed more recently?

25-08-2009, 02:51 PM	#31
7.77 S5 - Full Throttle Join Date: Dec 2008 Location: france Posts: 284 Casino cash: $4221	ok, so what should be the best size for the oil cooler ?? is 235mm x 235 mm ok ?

25-08-2009, 02:54 PM	#32
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	no idea..... but it think oil cooler and new water rad is a good first effort to solve the problem my water rad looks like it has ben trough the gulf war on the front! could easily be reduced performance tbh

10-09-2009, 11:28 AM	#38
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	Ok So after reading many posts on this it seems to result in the following; The guys who have witnessed high (and i mean towrds red line) water temps ON TRACK after 4-5 laps ususally in warm weather, have chased down various water cooling faults but never managed to fix. People have changed stat, pump, rads, sensors but seems no joy. So let us presume for a minute that water temp highs are a symptom and not a cause of the problem! I have found a few poeple post that they have solved the issue by replacing coils. injectors or sensors that are cusing they presume hig cylinder temps probably due to running lean due to these faulty bits. Thorney also has said on another forum that degrading coils or injectors could cause the high temps on track. So come on guys, thoughts please!!