November 1, 201510 yr Hi everyone I had a Legacy engine fitted in my 1972 VW Bay Campervan 2 years ago by Andy Raw at TSR. A fantastic replacement that has transformed the performance and reliability of my camper - 2 European trips to France, over the Alps then down into Italy. I am awestruck by the power and reliability of the engine. I have fitted a Subaru heater blower in the front, but because the heater matrix is higher than the header/overflow tank, I can't vent the system - so there is no heat in the matrix. I have fitted a return bypass loop as I know that the engine relies on this. There is great heat racing round the pipes and the bypass loop, but no further. If I shut the bypass loop, the hot water stops flowing. I've tried adding a 12 volt pump to get the water through the matrix but with no luck so far. HAs anyone overcome this airlock before?
November 5, 201510 yr Welcome to the USMB. I'm going to move your thread to the appropriate forum where it may receive some more comments. However, is there a way to add a bleeder vent on the heater matrix or piping to it so you could vent the air?
November 9, 201510 yr Author Cheers Josh I'm going to change the matrix so that the entry and exit pipes are at the highest point.
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