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If, at the end of the day, what you want is an external oil filter and even more additional sump oil capacity, the simplest and most sanitary solution might be something like an original Guzzi deep sump plus a Harper's Outsider. The Guzzi deep sumps have been used on Tonti-based and other big-block Guzzis since somewhere in the mid- to late-90s, so you'll eventually find one online or at a parts supplier. The Harper's Outsider is available directly from Harpers or occasionally as a used piece. You could easily sink $3-400 bucks into obtaining these parts, so there's an economic challenge.Since you probably don't have either of these you're considering arriving at a similar end result by using the parts you have on hand; the Guzzi sump spacer and Bub sump. To my mind, there's not going to be an easy way to achieve this and preserve some form of serviceability and assembly/disassembly ease. Still, typical Guzzi owner frugality and a long winter may yield some interesting results. Press on!
I think he just called Guzzi owners cheap. Probably not a lot of evidence to the contrary. Sent from my iPhone using Tapatalk
How about countersinking the return fitting? Is there enough meat there to still hold onto a different return fitting (similar to the feed side)?I've been playing around with another setup using a crude 3D model, let me see if I can get that done and show that. It would take minimal work and use simple materials.
The stock depth oil filter pan and spacer could be used with a machined take off at the oil filter pad with whatever to run the two lines through the spacer to a remote oil filter.If you are going to use a scraper and a windage tray (Not a oil surge baffle plate) they would need to work together and if you have gone that far you might as well add a camshaft oil bath and reed valve crank case vent.Edit...Using 6 mm studs instead of the stock bolts would probably make it easy to install.
https://youtu.be/9xqk6Fre7eMThe video gives you more views.Countersunk holes.Note that mounting holes don't go all the way through. I'd probably use a silicone gasket glued to the plate to seal it up. The red part would be rigid and the pipes would hold it in place. You'd offer the pan up and hopefully everything lines up when you bolt it up. I might be able to add the rest of the parts including the pipes later. I use TinkerCAD which is pretty simple and I don't know if I can bend the tubes.