I have a 307 SBC with a 180F thermostat. Radiator is stock FJ40. The problem is that it dumps coolant out the overflow pipe as it warms up. It also leaks a little past the rad end of the top hose. The weird part is that it doesn't happen at normal or high temps - only when it is about half way between cold and normal. It seems to be developing excessively high pressures in the cooling system as it warms up.
Any idea why it does this and/or how I can stop it?
TIA
Ben
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Weird cooling system problem.
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Weird cooling system problem.
74 FJ40, 307, Hilux DBC, 35 Claws, welded rear.
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ive noticed the same with mine, i think theres an air pocket in one of the tanks
small block, standard 40 radiator with one sucking thermo
it heats up at idle rpms under load, like rockcrawling
im thinking of just ditching the rad and replacing it with a holden unit from a 5 litre, with twin thermos.
although. has anyone run two radiators before ?
sounds stupid, but why not ?
small block, standard 40 radiator with one sucking thermo
it heats up at idle rpms under load, like rockcrawling
im thinking of just ditching the rad and replacing it with a holden unit from a 5 litre, with twin thermos.
although. has anyone run two radiators before ?
sounds stupid, but why not ?
Thanks All.
I will try a new cap tonight. If it works I probably deserve the stoner of the week award.
BTW Planb - check out my thermo fan setup. Pics are in a General Tech thread about clutch fans and electric fans.
I will try a new cap tonight. If it works I probably deserve the stoner of the week award.
BTW Planb - check out my thermo fan setup. Pics are in a General Tech thread about clutch fans and electric fans.
74 FJ40, 307, Hilux DBC, 35 Claws, welded rear.
'''_ ______
'/|_[_____]__
|?[_L/-\_|o=o|_
?:__;-?__-,==,_
()_)O()_)O== )_)
'''_ ______
'/|_[_____]__
|?[_L/-\_|o=o|_
?:__;-?__-,==,_
()_)O()_)O== )_)
planb wrote:i saw that pic
how much were the ford fans ?
the thermo i have has a pretty good coverage over the radiator
ill probably try and pick up a an 18 odd inch davies craig fan
and whack it on the front.
I'm running nice and cool, it's just the fluid loss that's bugging me. The fans haven't even come on for about three days.
Ive heard that Davies, Craig fans aren't as good as they used to be, especially for the $300 odd they charge for something that size.
74 FJ40, 307, Hilux DBC, 35 Claws, welded rear.
'''_ ______
'/|_[_____]__
|?[_L/-\_|o=o|_
?:__;-?__-,==,_
()_)O()_)O== )_)
'''_ ______
'/|_[_____]__
|?[_L/-\_|o=o|_
?:__;-?__-,==,_
()_)O()_)O== )_)
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