its an oil longevity thing

Plus the thermostat opens before the boiling point of water, which is 100 degrees celsius, hence why you can get difference types, so the water circulates before it starts to boil..

Hrmm - Thats a long way from where my temp is at the moment. (96 degrees).

But i'll wait for the new radiator and install the standard fan and shroud and remeasure the temp then.

Where is this temp measured from? I measured the 96 degrees from the the top of the radiator. Whereas i also pulled the thermostat cover off to check that the thermostat was opening up (which it was, since its brand new). Anyway the water temp in the thermostat housing was 84 degrees.

The thing that shits me, is that i have an aftermarket temp gauge plugged into the another outlet on the thermostat housing (about 20mm from the standard temp sensor) and it reads about 55 degrees - when an actual digital thermometer reads 84 degrees in the same spot.

I have the same drama with the oil pressure gauge. When i first start the car it has about 40psi of oil pressure - then once the motor warms up, the gauge drops to 12-15psi (but if i tap the throttle, the oil pressure obviously comes up).

Is 12-15psi too low for idle or not?

OR IS THE STUPID GAUGE TELLING LIES, LIKE THE TEMP GAUGE. I guess i should add that i paid about $50 for three gauges. I thought that would get me accurate gauges. (Oil pressure, Water Temp and Amps)

Also, do remember that whatever sort of fan you decide to use (engine or electric), a shrouded fan will always work better than a non-shrouded fan. A lot of people just mount thermofans directly to the radiator, this is NOT the most efficient mounting since it will only cool a small section of the radiator.

show them your thermofan shroud. it's the best i've ever seen

what about timing? if the ignition is too far advanced it will run hotter. was the radiator at least backflushed with a hose before fitment? was the block flushed?

 

maybe the engine is still tight and will need time to loosen up and bed in.

The engine was flushed and fully rebuilt - Its brand new (almost). The radiator is my original one - It was drained on friday for the engine change and sat in the shed lying flat with as much water as it would take (so it wouldnt dry out). I flushed it out with a hose sunday morning and fitted back into the car a few hours later. I had a blown head gasket a while ago, so i added some coolant sealant additive into the radiator (which fixed the problem for a few weeks until i got my new motor). I don't know if some of this could be blocking the radiator.

But like most people say, the standard fan should do a better job.

 

Thanks for all the help guys - I'll get back to you after i get the reco radiator and fit the standard fan and shroud. I'll have to check the timing again - when i checked it with the timing light - it was a bit hard to see the timing marks (even with liquid paper on the mark.

I'll get back to you on this topic in a few days, when hopefully i'll have it all sorted out.

my oil pressure sits at about 15-20psi at idle, gets up around 50-60psi with some rpm. i think it's at max pressure after 4000rpm, thought i have my oil pump spring shimmed. i'd hope yours is too if you paid someone else to build you a race motor

As requested:

 

 

oooo aahhhh very nice fookie :P

seriously, that's how a thermofan shroud should be. fook does the best work :P

Will have to get a hand off you when I got to do mine fook. looks tops :P

Some sheet aluminium, a jigsaw, some measurements and a bit of time does wonders :P