Hi, just jumping in this thread with a low tech question if I may: where are you getting flexible 19mm id hose? I've tried eBay and got some "flexible radiator hose" 19mm id, but its 28mm od. It is almost solid. Unusable really. I've some old real automotive hose from a BMW rad circuit which is ~19 id and 25mm od and its nice and flexible and the clips squidge it nicely on to the fittings (that is a 20mm T fitting by the way...). It just feels right and what I'm used to finding in a car.
Pic shoes the OEM 19mm pipe on the left/bottom and the stuff I can only seem to find in the UK on the right/top, which is crazily stiff and feels totally wrong.
I just can't find a vendor of this real OEM type thin wall flexible hose. Any recommendations please?
Thanks!
(By the way, I'm using a slightly different cooling loop to you guys with an active rad bypass valve. I'll post something when I know it works...)