What would you do? Slant performance
I think Junior's car is especially interesting because it uses OEM cast pistons and OEM rods. He says he thinks it may work well with up to 30 pounds of boost, that way, IF the "tune" is correct (A/F ratio and igntition timing) to preclude detonation. This would, of course, include a supply of gasoline of the required octane. Detonation is what does the damage to these engines.
But, if you can do that (keep it away from detonation,) there's no real need for $1,100.00-worth of forged pistons and rods.
It is worth noting that all TurboI 2.2&2.5L Mopars used cast pistons, and the upgrade
controllers MP sold upped the boost from 7 to 11psi, providing you used the best premium
pump fuel. Those engines have a much better fast-burn chamber design, both the double
squish 1st gen bathtub and high-swirl heart shape 2nd gen versions. They also weren't
drag racing oriented, unlike the current topic, and heat build-up on a roadcourse WILL
kill a set of cast pistons even w/o detonation. The slanty is "blessed" w/a piston the
size of a can of baked beans, and the ring package is well below the crown, this will
tolerate more heat build-up(short term) than modern pistons w/o melting down.
But getting more power from those tiny cyls. means hi BMEP and temps, and there is
a limit even to the slanty pistons in cast form, hopefully RustyPlymouth doesn't find it
in a catastrophic manner. Starting over from scratch heads and all sucks, good luck RP
:coffee2:
