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Old 09-03-2017, 11:41 AM   #40
Cliff Pountney
Join Date: Jan 2015
Posts: 41

I wouldn't just return the hose to the engine as without the restriction of the heater matrix it will steal some of the radiator flow (when the thermostat is open the heater is effectively in parallel to the radiator). MGFs had a simple on off valve in series with the heater so either just blank the heater connections or if you really want to connect the two ports put a restrictor (about 5mm hole) in instead of the heater.
Having owned vehicles without heater's I agree with Andrew's comments!
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