Bryan Cotton wrote:bvolcko38 wrote:Why did you remove your oil filter?
Bill,
I'm not ready to dive into drilling and tapping the case for full flow. I am planning a couple of XC trips in a couple of months where I won't have the luxury of preheat overnight. I don't want the potential liability a few hundred miles from home of the oil filter popping on startup. Per Sonex the filter is only required if you have the turbo. So I'm taking it off for now. I think we can add pressure relief to our original pump and cover, which is what I'd like to do. That's a project for another day.
Hi Bryan,
Post-war, Micro-filtered oil systems was one of the biggest steps forward in modern engine longevity that we take for granted today and gives marked improvement in engine reliability. It’s an issue that Revmaster fully appreciate and obviously catered for in their engines. Changing the oil every 25 hour helps, but it doesn’t stop foreign particles being transported around the system and doing main-bearing damage. (Remember, your crank is like your spine in your body, look after it!).
FYI I am looking to fit a certain product (they are terrified of litigation in aircraft use, so I won’t name them) for the oil pump with the spin-on oil filter. Hopefully this will fit/work with the current Sonex exhaust system/cowl, baffles, etc, but I will know soon enough as I am putting the engine back together now with the cases bolted to my engine stand as I type.
What I did was to bored out the castings oil ways slightly larger (but have left the hole size standard where it bolts up to pump itself), flowed the 90 deg bends where the oil changes direction out of the pump and into to casting galleries and taken 45 g (1.6 Oz) out of the casting weight by taking as much excess aluminium off as I dare, to reduce weight a bit more (to put that into context, about the equivalent weight of around 6x 5/16th bolts 1-1/4 long!
Will let you know how it goes, but personally I wouldn’t be too quick to get rid of a micro-filtration system. On leaving the subject, although the aircraft came with the brand-new Sonex supplied mini-sump kit (not fitted) with paper filter, I do not trust a “suction” filtered system at all with any of my engines, hence why I don’t intend bolting it on to my motor….
Again, I refer readers back to what Revmaster does as a standard feature of their engine…..
HH