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I worked for a large engine builder. We had 3 wet spin stations. Every long and short block got hooked up to a warm 45psi oil supply and spun at 800 rpm. We adjusted valves and checked compression I can tell you that without an oil pan or intake the amount of oil spun up on the cam was amazing.
I've read, here on site, that excessive idling is not good but that was intended to mean 700-800 rpm idle and then turning the engine off. Like you stated 2000 rpm long hauls at 70-75 mph are common and have had no ill effects on my cars.
Iron surfaces "work harden" with time so that will most likely explain why after a break in period cam material can withstand lower oiling conditions and survive.
Mike
Got a lot of the insulation in the walls completed...
All of the insulation on the sloped ceilings is complete and all of the metal panels are installed...
Finished up the last of the 16 lights tonight...
I'm thinking I may be using the lower or the higher lights instead of all of them at...
Do you think there is any credence to this QS oil being excellent for a flat tappet engine? And possibly break in procedures being done improperly thinking it was the way to go for all these years? Is the oils high film strength a reality? Its amazingly high in PSI. Maybe this blog shouldn't...
Most of us have heard of the increase in flat tappet camshaft and lifter failures over the last 20 years. Some of us have actually had it happen, even more than once.
I have. FOUR times too.
The blame has never been able to be attributed to one issue but is often spread around a few things. The...
In my opinion.... it still comes down to the comp ratio you have, and the deck height. That will determine how much cam you CAN use, and how much you SHOULD use.
And without that info, we are all just spinning wheels.
Check out a comp ratio calculator to find out all the info you need to have to...
Here are two cars that are a prime example of the cost/price and condition difference. A 1974 and a 1972. Can the 74 be brought to the condition of the 72 for the $9500 price difference?
1974 Plymouth roadrunner $12000 dropped to $10500
1972 Plymouth satellite/roadrunner tribute $20000
High volumes of traffic and accidents on normal days. Ultra high volumes of traffic during holiday weeks.
Plus
I-95 Widening Project (Georgia Border to US 278 in S.C.). Groundbreaking started this past August.
Duration and cam timing have more effect on piston to valve than lift. At full lift, the piston is WAY down the hole.
I made a cutter, out of an old valve, used a drill motor, and an old head as a fixture, and cut my own reliefs.
Pick the lift you want, then get the shortest duration you can...