quote:Originally posted by Joules5:
Do the vintage regs rerstrict what goes into the engine?
My 620HP 393C was built by Klein and is supposedly designed to rev safely to 7,850 rpm.
It's not in the car yet, we'll see how long it actually lasts, but then again I'll likely rev limit it 7,500 rpm.
Sure there are restrictions but the way the second tear engine builders are complaining there are almost no restrictions. The big deal seems to be whether or not you can run roller rocker arms.
Jules the question is not if an engine will rev to 8500 rpm, but can it run all day long at that rate.
I would take a guess here and say that very very few can and most guys don't want to really find out.
At $4000 a set for titanium connecting rods and $400 each for titanium valves these engines ring up parts like a drunken sailor blowing a wad.
It isn't just the parts that cost . It is time on the dyno to maximize everything virtually weekly. This is serious stuff that looks like it may be one notch away from wrestling with the Ford and Chevy racing programs.
OK. Everybody explain to me again why I don't want to do this please. Is this all what they call a self-reinforcing delusion?