110+ degrees celcius

[schakal]

thats what my aftermarket gauge was showing at castle combe
on saturday after 3 laps of abusive driving
and the heat did not want to go down fast while running the
engine the cool it down at the paddock

this has happened for the second time now , every time she goes on the track ,ends up overheating . i tried taking the grille out even running a couple laps at 3.5k rpm to cool it down with kein success .

the radiator fan kicks in and keeps running as it should but unable to
cool the engine down . under normal daily driving conditions (occassional ragging ) temp hardly goes over 2.5 line mark .

so far i suspect a fubared water pump ,slipping water pump pulley
or a blockage somewhere that returns with heavy revving .

any ideas wilkommen :D

[Justin..]

no point revving the engine. its not got a engine driven fan.

[DaneC]

no point revving the engine. its not got a engine driven fan.

Properly doing it to get the water pumping round faster...

[Justin..]

i can uderstand that but the engine still be generating alot of heat @ 3.5 k

[Purple]

What does the oil pressure and oil temperature read while you are caning the engine? And how old/used is the oil? Am asking as it may not be water cooling system, if the oil temperature gets too high.

[schakal]

i can uderstand that but the engine still be generating alot of heat @ 3.5 k

not really ,it also helps cooling the rad when you are at speed .
3.5k is ideal for spinning the water pump to circulate the water .


purple : the oil is brand spanking new ,changed a month a go
with plugs and oil filter . i have not got an oil temp gauge but
my oil pressure shows around 1 bar @ idle when its that hot .
never checked it at higher revs when it heated up

another thing i noticed looking at the bay yesterday is that the coolant
has been leaking from the sides of the thermostat housing . and where it leaked the red coolant i use turned into some hard lime scale like material which is quite hard as well . i am wondering if this sort of turning into solid happens inside the cooling system blocking ways .

either way engine will come out to make room for the
2 litre replacement soon :D

[raviedavie]

when i gun mine on private roads of course it ends up about 100 celcius so i assumed thats normal temp ?

[col]

This might be worth checking out......is your fan sucking or blowing (negative pressure)

[schakal]

This might be worth checking out......is your fan sucking or blowing (negative pressure)

mine is a sucker as standard col , a friend of mine suggested using an
aftermarket fan he uses on his 5 cup car . looked very beefy piece of
kit and apparently it drains less power from the battery .

[white16valver]

Sounds like it might be worth doing a cooling system flush (and maybe an overhaul) - this should clear the crap out and help the cooling process be more efficient

It might also be that your rad is a bit gunked up with road crap so it could be worth spraying through the fins with medium pressure water. Not too high pressure though as I believe the rads are quite delicate!

Mine always gets quite hot when ragging it so I'll let you know if it changes after I do my rad and matrix!

Did you open the bonnet when you'd stopped afterwards, and park so the rad faced into the wind and there was wind flow over the top of the engine? I find this the best thing for mine