Apologizes for bringing back this thread from the dead (feel free to re-read it if you haven't). I am doing some researching on oil filter flow and the filter bypasses keeps coming up over and over.
A point on bypassing the filter, although the filers have their own bypass, often the engine itself has one too. With Oldsmobile, I found in the Factory Shop Manual from Helm (in particular, 1985) the gas engines has a factory bypass set to 2 psi and the diesel had it set to 4 psi. So if the filter has more than 2 (or 4) psi, the bypass in the engine bypasses the filter.
How many engines has internal bypasses I don't know. Chevy does, as it was a practice by some to lock it off and let the filter do it all. I do think Pontiac has a bypass, but it has been a long time since had my Pontiac oil filter mount off to look, but I remember one being there.
Personally, I am looking to run a System1 filter (30 micron) and a Amsoil BP100 bypass filter. The idea is the System1 will filter much more of the time than a paper filter, and the Bypass will do what the System1 can't do. Even though the System1 is a 30 micron mesh, from what I have read, it filters much finer, because it has more than one layer of the mesh. Being I don't have one yet (coming soon) I'll know more when I get it.
I hope to be able to find an electric oil pressure sender I can hook up before the System1 (I have a filter mount that has ports before) and then if I Can figure out how to put one after I will. Would be interesting to hook up monitoring logic for it.
A point on bypassing the filter, although the filers have their own bypass, often the engine itself has one too. With Oldsmobile, I found in the Factory Shop Manual from Helm (in particular, 1985) the gas engines has a factory bypass set to 2 psi and the diesel had it set to 4 psi. So if the filter has more than 2 (or 4) psi, the bypass in the engine bypasses the filter.
How many engines has internal bypasses I don't know. Chevy does, as it was a practice by some to lock it off and let the filter do it all. I do think Pontiac has a bypass, but it has been a long time since had my Pontiac oil filter mount off to look, but I remember one being there.
Personally, I am looking to run a System1 filter (30 micron) and a Amsoil BP100 bypass filter. The idea is the System1 will filter much more of the time than a paper filter, and the Bypass will do what the System1 can't do. Even though the System1 is a 30 micron mesh, from what I have read, it filters much finer, because it has more than one layer of the mesh. Being I don't have one yet (coming soon) I'll know more when I get it.
I hope to be able to find an electric oil pressure sender I can hook up before the System1 (I have a filter mount that has ports before) and then if I Can figure out how to put one after I will. Would be interesting to hook up monitoring logic for it.
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