Forgot about my thread so time for some updates.....
Been too busy driving the thing - and fixing
So after I got my WOF and rego i did a series of long trips up into St bathans, Timaru 3 times, Lake opuha, Fairlie, Invercargill, and many more, it ran like a dream until I was up at a mates shed one weekend in Timaru where we planned to fit a new rear section of the exhaust and correct the mismatched headers....
That all went ok but took a lot longer.
Then on the 2-1/2 hr trip home, it started overheating! Right up and it would sit just on the red while cruising at 100kmph.....
We eased it home, stopping regularly and cranked into trying to find out what it was...keep in mind that nothing had been touched on the engine...
First check was the radiator fluid so flushed that out, looked ok, not any ugly colored water, and the flow through the rad looked ok, but refilled and still the same problem, so off came the water pump which looked perfect and the end plate on the engine will need replacing in the next rebuild because that was ugly....
Refitted the water pump after some flushing out and it ran very slightly cooler then b4 but still not right. The two hoses were vastly different temps when it was hot.
After doing this I removed the thermostat which hasnt made much difference to the running temp but seemed to solve the problem of having a hot top rad hose and a cold bottom hose...
Next I tried some of the super duty radiator flush which seemed to do something as I could keep it cooler when idling then.
Finally clicked that it may be the viscous fan, so have removed that and wired in 2 x 12" electric fans with a digital thermatic switch, which is great but it still heats up a bit going up hills on the highway, I have done around 500kms in it with the electric fan so it's ok but will get a new radiator soon....just trying to find somewhere that does a nice shiny alloy 1 with the right mounts for a 84rrc!
Pics to come....