Topic: no gasket!!!!

[edbikerii]

So, Kevin400F and Paulages, what oil do you run?  Do you have any issues with low oil pressure light coming on at idle or otherwise?  Have you run for long with these o-rings in place?

What was your source for the o-ring, Kevin400F?  How did you determine the measurements?

Thank you!

[paulages]

So, Kevin400F and Paulages, what oil do you run?  Do you have any issues with low oil pressure light coming on at idle or otherwise?  Have you run for long with these o-rings in place?

What was your source for the o-ring, Kevin400F?  How did you determine the measurements?

Thank you!

i usually run 10W-40 year round (though i ride much less in the winter obviously). my oil pressure light always goes off immediately after starting, and doesn't ever come on at idle. i use motorcycle formula when i can, but often have to top it with whatever if i'm on a ride and notice it's low.

[Kevin400F]

I use various brands of 15W-40 "diesel-spec" oil, i.e. Delo 400.   No issues with low oil pressure.  The cap registers to the oil pump body with a metal-to-metal fit, and the O-ring is compressed in a defined gap.  As long as it is not leaking or so grossly oversize that it distorts the cap and/or prevents the metal-to-metal contact from occurring, there can be no effect on oil pressure.

One of my pumps was leaking, so I simply disassembled it and measured the old, compressed O-ring, as well as the cap.   

I've run the Buna-N oil rings from American Seal (Dichtomatik) for several years.  Viton material would be a potential upgrade, but I'm convinced from inspecting the Honda original that it must have been Buna.

[edbikerii]

Alright, thanks guys!