powerstrokenstang
New member
With roller rockers is there any real advantage to solid lifters? I dont plan to change lash to do different things as i already have a cam that took care of that.
With roller rockers is there any real advantage to solid lifters? I dont plan to change lash to do different things as i already have a cam that took care of that.
Why do you want to add roller rockers without adding solid lifters? What advantage do they give you by just adding that one part?
Why do you want to add roller rockers without adding solid lifters? What advantage do they give you by just adding that one part?
I would guess the same as a gas motor. Less friction, and 15-30 hp to the crank.
Also strength at higher r's. Imho stock rockers are cheesy.
I know you are asking a question, but I think you may be making a statement and I'm interested in exactly what that is. I've run roller rockers on hydraulic lifters in gassers so I'm wondering what is the difference compared to our 7.3's. I may be wrong, but I'm inferring from your comment that the roller rockers are only effective when used with solid lifters in the 7.3. I'd like to know why.
I would guess the same as a gas motor. Less friction, and 15-30 hp to the crank.
Also strength at higher r's. Imho stock rockers are cheesy.
So you need some more strength at higher RPMs in a boosted motor - generally that means you need to be looking at your valve springs - can your valve springs handle say 50-60psi of boost at say 4500 RPMs and probably 60-70psi of backpressure for a pulling application now?
Ahh that is a hydraulic pressure question, with some part of the equation being flow as well as pressure. I think. IOW at that rpm can the oil system feeding the lifters keep pressure up at higher rpms.What kind of loading can the factory hydraulic lifters take before they collapse?
Is it sufficient to be able to handle the valve springs and engine RPMs set forth in the first question?
Decreased wear on parts and negates the need to adjust valve lash.What is the benefit of running a hydraulic lifter in the first place?
I'm assuming you meant lifters, not rockers, and yes, based on the prior questions I would say increased wear/shorter lifespan of cam, lifter and possibly pushrods.How does that apply to the engine that we are talking about? Is there any pitfall to converting the rockers to solid - other than the minute cost of the components and the fact you need to remove the heads to swap them?