My first overheat

[smoov]

Just thought I would add the result of the bypass switch for those still following this thread.

Yes it still heats up on idle and below 40kph with air cond on. But the switch keeps the fan on when the air is turned off and the temp drops to normal at slow speed and idle, just turn air off !

So I went to our local 4wd track (Byfield Nat Park, Nine mile beach) to test it out.

Through the soft sand and driving slowly it overheated as expected with the air on.

While driving under 40kph through soft sand, it retuned to normal temperature, when air was turned off and fan switched on, even in soft sand.

Conclusion is that if you want the air on when hacking through sandy trails at speeds less than 40kph, expect to overheat.

Use a bypass switch so the fan stays on when air is off, and it will return to normal while still hacking through soft sand, just wind down the windows for a while then turn back on when cools down.

ever considered a uprated twin core radiator?

ive put one in my car, and although i don't have air con, i now barely use my electric fans to keep temps down on-road (all my fans are in cabin activated).

offroad, with one fan on, temps go from 1/3 to 1/2, and the second fan has been rendered obsolete!! (although im keeping it )

[KERRY]

Unfortunately I just put a new waterpump, timing belts and radiator in recently, after a catastrophic day in the sand at woodgate.

It overheated, cracked both heads, so I put in a second hand motor ($500) and everything I could think of including oil seals etc while it was on the bench.

I could still upgrade but I do not know how good this motor is, the short motor I have left only has 200,000klms on it and seams fine.??

I tried it out yesterday in the sand and no problems except with air on and hard driving real slow.

I resolved the sand issues by sticking some industrial rubber over the holes in the bash plate. no more sand flooding the engine compartment now.

This was a good car when I bought it for $3k, but it now owes me $8k
after the lift, new clutch and everything else I could think of including alternator, struts etc etc.

I will just have to have the air off when going through the soft sand, I can not justify pulling a new radiator out to upgrade after spending soo much already.

Where can I exchange my old heads for recond or good ones?? then i will have two motors.

The second hand one could have done any ammount of kilometers, it was passed over by the Aviators in Bundaberg as not good enough. They snatch all the good ones for Jabirus and Ultralites.