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Hi all, thought I'd share this to anyone who was looking to raise their oil pressure.....
Oil pressure is regulated threw the relief valve in our engines, most all are found right on the bottom of the motor in the oil pan. These relief valves are a simple ball or collar and spring set up that has a certain pop off pressure. Raising the spring pressure will raise the amount of pressure it takes to over come the spring which equals more oil pressure
All you need to do to slightly raise the oil pressure is shim the spring which entails dis-assembling the relief valve and adding a small washer to the set up
Here is the Relief valve out of my zx-12r along with a snap ring pliers
A closer look at the relief valve, first remove the snap ring and pull the assembly apart
Here is everything in the system. Housing, collar, spring, spring holder and circlip
Here is a washer that is just the perfect size diameter wise.
after cleaning the assembly reinstall everything but add the washer to the top of the stack
and here is the stack with the installed circlip
NOW VERY IMPORTANT!!! I do not know how much pressure this will adjust the oil pressure with a given washer thickness so its a trial and error... I'm going to do a before and after test on my 12r when its all together but no hard data.
Hope this helps anyone who is looking to raise their oil pressure when needed! :thumbsup:
Oil pressure is regulated threw the relief valve in our engines, most all are found right on the bottom of the motor in the oil pan. These relief valves are a simple ball or collar and spring set up that has a certain pop off pressure. Raising the spring pressure will raise the amount of pressure it takes to over come the spring which equals more oil pressure
All you need to do to slightly raise the oil pressure is shim the spring which entails dis-assembling the relief valve and adding a small washer to the set up
Here is the Relief valve out of my zx-12r along with a snap ring pliers

A closer look at the relief valve, first remove the snap ring and pull the assembly apart

Here is everything in the system. Housing, collar, spring, spring holder and circlip

Here is a washer that is just the perfect size diameter wise.

after cleaning the assembly reinstall everything but add the washer to the top of the stack

and here is the stack with the installed circlip

NOW VERY IMPORTANT!!! I do not know how much pressure this will adjust the oil pressure with a given washer thickness so its a trial and error... I'm going to do a before and after test on my 12r when its all together but no hard data.
Hope this helps anyone who is looking to raise their oil pressure when needed! :thumbsup: