Hi,
From memory, the oil flow at 2000 RPM is around 3 GPM. Could a small volume filter, ie, 50mm long handle 20W oil without the bypass valve opening? I guess picking one with no bypass might be a good choice especially when mounted vertically with the inlet at the top?
I can see the point of not mounting the filter upside-down as in my install. My HOF200 is mounted vertically with the bottom at the top. I cannot move it from this angle as I have a tap-off point feeding the front bearings.
I have no pressure gauge fitted & I have no noise on start-up. I do have an unknown noise sometimes, I assume its something to do with the starter motor pinion?
Would be interesting if somebody could measure the DP across the filter at start-up. I believe there are pick-up points to facilitate this. Could be a way to judge if the filter needs changing before an oil change? No idea of numbers.
Additionally, from what I am told; FRAM oil filters are crap.
Cheers,
Iain.