Oil restrictor

[turbojet427]

I've heard both sides of the coin with this topic, so I'm going to ask here for some opinions. Should oil restrictors be ran on a roller street motor? When I say roller...roller cam and rockers. Should 700 lbs. open springs be ran with/without oil restrictors on the street?

[69 Post Sedan]

I'm sure more will chime in with better details but from what I have been told....absolutely not. If you install them the lifters will not get enough oil to them.

Kurt

[turbojet427]

What about for a solid roller?

[69 Post Sedan]

I guess I should have said no matter what lifter you use. They restrict the oil too much and could cause damage to any lifter.

Kurt <<GRAEMLIN_URL>>/biggthumpup.gif

[VintageMusclecar]

Do not run restrictors, esp. with a 700 lb spring on a roller lifter. Those lifters need all the oil they can get to survive, esp. on the street where rpm's are typically low (relatively speaking) and there is less oil splash available to the lifters.

The valve springs rely on oil for cooling as well, so the last thing you want to do is restrict the oil to the top of the engine.

If you're concerned that the bottom end will starve for oil, run a bigger/better pan and/or windage tray.

[olredalert]

-----Eric is on the right path with the oil pan. Get a good scraper windage tray. It should be as close to the reciprocating assembly as is possible. Taylor it if you have to....Bill S

[turbojet427]

Thanks! That is what I did with the windage tray. I did not run the restrictors. I'm anxious to get some pics posted of the project.