The Triumph Dolomite Club - Discussion Forum

Think I bought the wrong Saab radiator, ah well, only £15.

Trying to figure out the cooling circuit for a Sprint, have I got this right.

1)Bottom block to bottom hose radiator, when thermostat is closed, water circulates in block only.

2)Two hoses from inlet manifold to heater.

3) Three hoses on thermostat housing. Small one header tank, large one RH side goes to top RH radiator and LH to LH top radiator. Only flows when stat is opened.

Don't see the point of left hand top connector, it seems to bypass most of the rad, why did they design it into circuit? My rad only has small connector in this position, so I don't think it will work.

cleverusername wrote: ↑Mon Aug 28, 2017 6:19 pm 1)Bottom block to bottom hose radiator, when thermostat is closed, water circulates in block only.

Yes, bottom RH radiator spout is connected to the water pump cover.

2)Two hoses from inlet manifold to heater.

? There is only one outlet on the manifold. It is the supply to the heater. The return goes to the water pump cover.
(This is so whether you have an early or late manifold.)

3) Three hoses on thermostat housing. Small one header tank, large one RH side goes to top RH radiator and LH to LH top radiator. Only flows when stat is opened.

The LH side is the larger hose (32mm).
Yes flow to the radiator only occurs when then thermostat is open.

Don't see the point of left hand top connector, it seems to bypass most of the rad, why did they design it into circuit? My rad only has small connector in this position, so I don't think it will work.

That should read RH not LH,
it is the vent for the radiator. This necessary because of the low position of the radiator relative to the engine.
Saab 9-3 hose is 11mm whereas Triumph is 16mm bore. You get straight hose adapters for this.




Ian.