BMW Hyrdoboost Questions

I'm not sure if it's even that important to have a reservoir big enough to hold all the fluid. I know the mustang HB holds more fluid than the reservoir does. It also has an accumulator, but it's built into the HB itself instead of a separate bomb. There are plenty of of larger reservoirs available though that could be remote mounted to handle all of the fluid in the system.

Thank you. I think at this point fill system and adjust as needed.

Sounds like you're bumping up against a lot of the same things I did. I like that PSC unit, but as has been said, the primary disadvantage is that it would have to mounted higher than the pump. The other option I was looking at was swapping places between the PS pump and the alternator. I think there are some kits out there, but I haven't researched it to heavily.

FWIW, this is my current setup.



One nice feature of the stock reservoir is the cap. I think it's designed to relieve pressure above ~ 6psi. Which is pretty nice. I am not sure, but I don't think the PSC cap allows for pressure relief. Maybe it can or one can be fitted to it?

looks clean. Thanks for the pics. What size are the lines for the HB

Most of the alternator relocation kits move the alternator forward quite a bit. 944's don't have the room for that at all. They barely have room for the f-body mounts as it is. I know one company that moves the alternator to the spot where the ac compressor goes now. But, if you are building a street car you probably want ac.