this is a PDF i found for u guys talking about pistons and rods and sleeving and so on... should shed some light on the topic for some and others u may feel dumb...lol
http://www.erlperformance.com/techbr...20Design_1.pdf
a slight interpretations for you guys of the above info.
"I didn't catch it until just now, but everything I've ever read said the sleeves in a K block were iron, not aluminum. The pdf you posted seemed to indicate that as well as it was comparing their ductile iron to cast iron. Correct me if I'm wrong about that.
In any case, it's time for a bit of interpolation with the numbers from ERL's pdf. They note that cast iron will yield around 45,000 psi (the Von Mises stress). They simulated 75,000 psi at 45psi boost for a rated 1200 hp. They said that a standard N/A k24 reaches 1200 psi combustion pressure, where as their 1200 hp one reached 6000 psi. Let's assume for a moment that the stress psi and cylinder pressure psi are related, in some way, if not linear, close to it. A little math would put the stress psi of 600hp or around 22psi at around 75000 * .6 = 45000 psi.
That would seem to indicate that the stock sleeve would start to yield at around 600hp."
a thread for more reference can be found here.
http://forums.clubrsx.com/showthread...sleeving+motor