Thread: HOW HOT

If it was just idling I wouldn't have thought it would be that hot that fast.

idling with choke on was cold ...

somethings wrong there....

check
the lower radiator hose for temperature with a blanket in front of the radiator from start when the top hose begins to get warm if theres no increase in temp at the bottom theres no flow, either the radiator is blocked the thermostat is stuck closed, the pump is eroded or you have a hose bockage.

the timing of the valves, the spark and for restrictions on the exhuast do a leak down test on a cylinder thats on the exhaust stroke.

If the timing is out the engine will be fighting itself to keep running, it will get hot just trying to idle you will be down on power.

Is the fan too big, is it creating too much flow and not allowing enough time for the coolant to transfer heat to the atmosphere?

if its none of that then I have no good news for you.

Is there anybody with holden 6/Series experience that can look at this for Banjo.
He has been chasing his tail for a long time.
Andrew

Does the bottom hose have the anti-collapse coil in it? The water pump sucks the hose flat if there isn't one and thus no water flow. Make one out of a wire coat hanger if necessary.

Have you had the core rodded out?

This is an ongoing issue in another thread Brian,radiator is new.Anti colapse spring is a good point that hasnt been mentioned.
Would be good if somebody near Banjo with the experience could go thru it with him,it has to be a simple issue thats been overlooked.
Andrew

Does the radiator stay as hot as you describe or is this just the initial "thermostat opening" surge?
It should be running around 80degrees or so and that is fairly hot to touch.
Is this a Holden powered vehicle? If so the position of the fan to the radiator will naturally be out of kilter. I would suggest in this case either a larger radiator, a cross flow radiator or cheapest of all an electric fan.
Still check for blockages as mentioned elsewhere though.
Regards
Glen

gday,from what i remember from the ist thread you have now made your radiator more eficiant at cooling with the shrowd now,however when running it will get very hot to handle, (remember 82oc thermostat opening, this means it should keep it all running at that , theretically). It shouldnt get that hot that fast, mine takes about five minutes also but after that it is maintained-----. I think that the engine modifications you mentioned may be the cause of its increasing heat.i think you mentioned it had different carbies , a hot cam and a 60 thou overbore? This is asking for trouble to cool when a forby is offroading! check if its not running rich,the timing is probobly out due to the cam differences and 202,s are known to run hot on a overbore as the gaps between pots get smaller and clog up causing restricted flow. check your total water capacity of the system when filled , if its smaller than the standard 202 system you nead to increase.