Harley Knucklehead Panhead, Shovelhead and Evo
The Flat Head Harley uses a slightly different set up.
The Flat Head Harley uses a slightly different set up.
Basic Triumph
The oil tank needs to be set up properly to make sure the oil feed to the rocker box is not excessive to over oil the top end. This is done with the return line in the tank being set up properly and using an 1/8" line to feed the rocker box from a Tee on the return. The feed works best using a stock style oil filter screen built into the tank.
The oil tank needs to be set up properly to make sure the oil feed to the rocker box is not excessive to over oil the top end. This is done with the return line in the tank being set up properly and using an 1/8" line to feed the rocker box from a Tee on the return. The feed works best using a stock style oil filter screen built into the tank.

Honda CB 750
With Honda the return and vent need to above the full oil level to prevent the oil from syphoning to back to the engine and causing a wet sump problem
With Honda the return and vent need to above the full oil level to prevent the oil from syphoning to back to the engine and causing a wet sump problem