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Valve spring replacement schedule ???
I have roughly 15,000 miles over 5 years on the original Brodix valve springs. Is it all about the number of cycles or does time have to be factored into this equation? How often should they be changed when the lift is .560 inches. I sure don't want to drop a valve, it would NOT be worth a set of new valve springs.
Should I see more valve rotation ???
Looking at the witness marks on the valve tips, it sure does not look like the valves are rotating. On some intake valves I've noticed that the valve stems (close the valve head) is polished. I thought about taking some photos, but just didn't think I could capture the details.
Does the protrusion of the rocker stud hole into the intake port disrupt flow ???
I was wondering how much this hole disturbs the flow thru the intake port. Have there been any dyno tests? It would be easy to fill with some JB Weld to make the intake port wall continuous.
.
Valve spring replacement schedule ???
I have roughly 15,000 miles over 5 years on the original Brodix valve springs. Is it all about the number of cycles or does time have to be factored into this equation? How often should they be changed when the lift is .560 inches. I sure don't want to drop a valve, it would NOT be worth a set of new valve springs.
Should I see more valve rotation ???
Looking at the witness marks on the valve tips, it sure does not look like the valves are rotating. On some intake valves I've noticed that the valve stems (close the valve head) is polished. I thought about taking some photos, but just didn't think I could capture the details.
Does the protrusion of the rocker stud hole into the intake port disrupt flow ???
I was wondering how much this hole disturbs the flow thru the intake port. Have there been any dyno tests? It would be easy to fill with some JB Weld to make the intake port wall continuous.
.