Externally oiled head restrictor size.

[prochargedmopar]

If mounting LA heads on a magnum what size restrictor would be required for external rocker shaft oiling?

Anyone know what size Indy uses on their kit?

 

[RogerRamRod]

Watching

 

[rumblefish360]

Considering MP suggests to enlarge the block passage for the heads to, ?11/32? I forget, that would be a close guesstimate I think.

 

[RogerRamRod]

My guess is 11/32 is for a LA block/head combo oil mod? Since that is a timed arrangement, (hole in cam lines up w/ hole in block) you are adding some volume. With a constant feed, I’m thinking you will have a retention pond going on up on top with an 11/32 “restriction”.
I’m thinking we are looking in the neighborhood of 1/8 (or maybe even less). IF we are talking about the same thing, though I’ll be the first to admit that I often misunderstand where the conversation is going.

 

[rumblefish360]

People have run full time oiling cam bearings before without issue.

IMO, your over thinking this.

 

[MopaR&D]

I'm trying to figure this out as well I have a thread in the SBM sub-forum... I'm using external oiling off the oil pressure sending port at the back of the block which is constant full pressure feed not timed like on a stock LA.