oil restrictors and pushrod restrictors?
 

The Dart blocks have ability ro run oil restrictors, do you guys run them or no? I never have before in others no issues, what about restrictor pushrods? keeping more oil to lifters then rockers...

Looking for good solid answers not guessing....

I would not restrict the oil to the rockers

Solid roller or Hyd?

Gotcha so go with standard pushrods I think hole is .080?

Was brought up is discussion and never heard of it before..

Hydraulic roller

i don,t advise oil restriction in a marine engine,keep in mind that the valve springs get cooled from the oil that comes up the pushrods,if you restrict the flow you also slow down the cooling effect.

If you are running solid rollers or solid flat tappet lifter you can restrict the oil , if it is hyd then no they need the oil to pump up. Depends on the rockers you are running , roller rockers dont require alot of oil but I would leave well enough alone since you are running HYD Roller cam you should not run them just use std pushrods JMO , I realize that a Drag Race Engine is a totally different animal but we have restricted all the oil from the top end of engines just lube the rockers after each pass , But as I said thats a different story just saying rollers dont need much oil.
Jamie Wheatley , Wheatley Racing Engines Richmond Va.

Nobody is restricting oil in the block anymore. If you buy high end lifters. Solid or hydraulic they have high pressure pin oiling and tell you not to use oil restrictors. The pushrod restrictors is the new hot lick and by design keeps more oil down at the lifters.

Gotcha so no restrictions that's whatbi planned anyway thx

OIl is not used just as a lubricant, but a coolant also.

Absolutely do not take any oiling away from your top end. There is a reason valve spring oilers are popular with the more hardcore engines.

==============================================

A huge extreme here, and not really comparable at all, but did you know Nascar uses flooded valve covers.....lube/coolant/dampening. Pretty cool schit.

Click on here: http://www.racingsprings.com/Multime...b/kb513102.pdf

And look at the section of heat vs valvespring psi changes as installed.

Oil cools your valvetrain.

Use plenty of oil and make sure your oil cooler keeps it to the correct temp.

need the cooling to valve springs...in drag race engine not run long enough to be a issue...

oil cools and carrys the heat back to the cooler to release the heat into the water and out the system.

Actually they are using spring oilers on drag stuff. What they have found is it makes an $800 set of valve springs last a lot longer. We are talking 1.250" inch lift stuff.

A friend called me and asked about oil restrictors,he was told he needs them, it is a solid roller motor. The instructions say on the lifters not use restrictors.

Restricting oil to the lifters is not a good idea. Today's lifters are designed with high pressure pin oiling. Restricting oil to the lifter defeats the design purpose that went into the lifter and is asking for trouble.

so I think this all comes down to, is your friend going to listen to some guy who told him to use restrictors or the people who designed and built the lifters he is using.

bad idea on a boat

His isn't going to use the restrictors.