dodgeman in my first post i said i replaced the water pump just in case it was the problem. And i machined the head to try and fix the problem.

I had heaps of problems at one stage and it turned out to be the stone tray that i left out

but i still found that I would have heat issues some times

fixed it I just fitted a series two bluebird radiator
but a pulsar one would be smarter

Its seems to be running normal again with the gemini radiator in. Just did some highway driving at it kept it on the thermostat. Fingers crossed tomorrow in the sun.

Hey Freak looks like the radiator may have fixed it.
Just something to note on extremely rapid temp increases. I had a gripe exactly like yours, and replaced almost everything you did. I could start -up the car and with my radiator cap off could actually see the coolant flow when my thermstat opened up. And the thing still heated up almost instantly.Very frustrating.
It turned out to be a pin-pick hole in my retun heater hose. The dang thing emitted a silent and fine steam mist and evorporated immeadiately leaving absolutely no evidence of a leak-it also did'nt do it at idle,though the engine still immeadiately overheated. I only caught it by jumping out of the car quickly after a short test drive and popping the hood.

Quote:Understood. I wasn't sure if the new pump went in just before, or just after the fan blade incident since the fan blade was mentioned in a later post.

Looks like you probably have two blocked 1200 radiators.

hope so. Was just driving it around. 30min eash way drive and it kept it spot on the thermostat temp. Im praying tomorrow.

thanks fellas

mate,stop dicking around.get a custom alloy radiator made with the thermo on the inside mounted on a custom shroud. then when you actually start to make some power it wont get hot again.

why would i want to fork out hundreds when a gemini setup is more than adequate?

Watch out Dan he may out Horsepower you ... lol