A Cooling Sucess Story!
Discussion
Just collected my Spyder from Pace Performance cooling specialists. On initial appraisal we seem to have come a long way. Maybe not ‘perfect’, but a vast improvement over the previous situation.
There was never a problem with high speed cooling but with the original rad & fans, thermal runaway would commence below 30MPH and worsen as speed dropped. There have been several instances requiring a switch off as water temps hit 115C. Slow or stationary traffic was a three minute gamble.
Pace felt they could stabilise the temperature to around 100C and all credit to them, they appear to have done exactly that… and with a 50/50 water/antifeeze mix (100% water is a better thermal conductor).
Rad is ally, three core, wide vaned, for improved airflow and 25% wider than standard. Three high power Pacet fans replace the two Tripacs. Some re-welding of the front rad/bonnet support assembly was undertaken by them to accommodate the taller fans and small sections of hose & pipe work rerouting was done to accommodate for the new inlet and outlet pipe locations. After the rad fitting, all the electrics were completed by them inc. new relays etc.
Max temp reached was an apparently stable 102C behind a tractor and a long linme of traffic at 15mph for several miles. Stationary it’s a stable 98-100C. With the fans cutting in and out. Higher speed running temps are also less to around 83-85C (about the thermostat opening temp) and the rate of response to airflow is much improved.
Pace feel 100C on a pressurised system is quite acceptable for an unloaded condition and this is when the fans switch in, although personally I’d prefer it just a little cooler toward 90C.
There is still some opportunity for fettling like additional rad baffling, water wetter, lower temp fan switch, swirl pot re-siting etc if I wish to fiddle further. However, their job was excellently finished and right now I’m one happy customer!
There was never a problem with high speed cooling but with the original rad & fans, thermal runaway would commence below 30MPH and worsen as speed dropped. There have been several instances requiring a switch off as water temps hit 115C. Slow or stationary traffic was a three minute gamble.
Pace felt they could stabilise the temperature to around 100C and all credit to them, they appear to have done exactly that… and with a 50/50 water/antifeeze mix (100% water is a better thermal conductor).
Rad is ally, three core, wide vaned, for improved airflow and 25% wider than standard. Three high power Pacet fans replace the two Tripacs. Some re-welding of the front rad/bonnet support assembly was undertaken by them to accommodate the taller fans and small sections of hose & pipe work rerouting was done to accommodate for the new inlet and outlet pipe locations. After the rad fitting, all the electrics were completed by them inc. new relays etc.
Max temp reached was an apparently stable 102C behind a tractor and a long linme of traffic at 15mph for several miles. Stationary it’s a stable 98-100C. With the fans cutting in and out. Higher speed running temps are also less to around 83-85C (about the thermostat opening temp) and the rate of response to airflow is much improved.
Pace feel 100C on a pressurised system is quite acceptable for an unloaded condition and this is when the fans switch in, although personally I’d prefer it just a little cooler toward 90C.
There is still some opportunity for fettling like additional rad baffling, water wetter, lower temp fan switch, swirl pot re-siting etc if I wish to fiddle further. However, their job was excellently finished and right now I’m one happy customer!
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