Tuning oil flow to heads

[CDXXVII]

I have way more oil flowing in the right head. Stock solid lifter valve train.
Unless there is some mad wear on the rockers I was thinking about restricting the right more than the left head.
Say .070" right, .090" left.
Anybody else seen this?

[cjshaker]

There are lots of reasons that can cause the issue. Is this a stock, rebuilt or performance engine? Reasons could range from cam bearings, head gasket, head milling, head bolt, rocker wear or shaft incorrectly installed.

As long as you have good flow in the left head, unless your flooding the valve cover on the right, there's not much reason to mess with it. If you're flooding the valve cover I'd look at the rocker set-up before just restricting it. If everything looks good, shafts installed correctly, rockers not overly worn, then there's no reason why you couldn't restrict one side more than the other.

[Rory428]

You could always swap the rocker assemblies side for side to see if the overoiling follows with the rockers. If it does, you may well have excessive clearance on that side due to worn shafts.