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Ok so about 2 weeks ago i bought a 93 EA82
2 pipes cumin out from under the air filter into the dash area (heating unit i think, as it dont work) were looped before making it into the dash. so i got some pipes off a doner car and i had radiator fluid pouring into the cockpit when i started her up. I figure a crack in the copper pipes leading to the heater unit.

When i looped em up again i have an over heating problem, its as if the 2nd fan doesn't kick in till it red lines. Im gonna get the cooling system pressure tested ASAP, and a genuine service done ASAP, is there anything anyone would recommend doing before either, or places to go for a good job.

PS live in thornlie (cannington)

firstly you heater core is leaking thats why its been bypassed....secondly a good check over of your entire cooling system is needed id say if its only started to overheat since youve been playing with it it might just have a air block in it...did you bleed the system afta you hooked all the hoses up...

Yarney and I spent the afternoon checking over our cars and replaced the thermostats. EA81 and EA82 use the same thermostats.

We decided to go with the Tridon brand
- Thermostat part number is TT241-170 ($19)
- Gasket part number is TTG15 ($6).

Bought the parts from Autobarn. New thermostat works a treat on my Brumby and the temp needle now sits about 4mm below the halfway mark on the gauge.

NB: In the TT241 range there are three different thermostats available - 170, 180 and 190 (degrees F). According to the Tridon catalogue, 180 is the OEM setting, but we decided to fit the slightly cooler 170 thermostat.

Jack

maybe a good idea to reverse flash the system after you do the heater core - might have caused blockage in the radiator?
Cheers
AP

Something else I've done recently when trying to deal with the overheating problem is to wire up a manual override switch from the second fan to the cabin. So with the switch off, the fan kicks in whenever the thermostat tells it to, switch on and the fan runs all the time.
Getting one of those 170 thermostats might overcome this problem altogether but I recently replaced the thermostat (with the 180) and the fan was still kicking in way too late.
Also the temperature gauge might not be reading right, I tested mine with an electronic thermometer and it didn't seem to be getting as hot as the car's temp gauge said it was. (I think I might try to install an electronic gauge in the cabin for more accurate readings.)
Anyway, hope this helps.
Tommo.

I would also suggest a propper bleed of the cooling system, there is probably a big air bubble in it after taking that heater hose loop off and back on again.
I would avoid changing / customising the electric fan switching setup. It's a stock car so the stock system is ideal.