I want to have a very well tuned 10psi system and see what can be done with a purely stock slant with a turbocharger bolted to it. If I get 225whp that would be ...so... cool.[/QUOTE
Here is a bone stock, turbocharged, slant six that had only a 4bbl carb and manifold... no other modifications. It ran 12.95-seconds in the quarter-mile, with a mph of 104. It takes about 300 hp to run those numbers in a 3,400-pound car like Tom's Dart.
[ame="https://www.youtube.com/watch?v=pPe_vHwZsF4"]Slant Six Turbo 1970 Dodge Dart 1/4 Mile pass - YouTube[/ame]
Very impressive, BUT, it was running 18 pounds of boost to do that.
Just shows what a turbo can do for this motor and its strangulated cylinder head. with no other mods.
Of course, the stock pistons and rods won't survive long, under that kind of boost.
Ten pounds and 18 degrees of spark advance might last indefinitely, though, with the right mixture.
What you do NOT want to hear, EVER, is detonation under boost with stock, reciprocating components. in fact, forged pistons and rods don't much like that, either.
So, I think that 18 degrees of spark advance is IT for me... I dare not experiment further (no guts.) If Ryan Peterson and Tom Wolfe can make 500 horsepower out of their 225's at 18 degrees, that is good enough for me...
I'll do my experimenting, elsewhere. :banghead: