Is the EVO IX the most powerful 4-Cylinder ever?
#76
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the S2k is 11:1
and you CAN turbo the S2k, very easily
the shop that does the work on most of the sports cars around here have more than 1 S2k making over 350whp with a turbo kit on completely stock internals
and 500 whp with race fuel, the the stock block STILL was able to handle it
but the 350whp s2ks have been running flawlessly for over 2 years
turbo kit, aem ems, cams, exhuast, clutch....
matt
#77
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660 degrees celsius is over 1200 degrees fahrenheit. At WOT, my turbocharged rotary sees EGT's in the 1,000 C range. The aluminum NEVER sees those sort of temperatures due to the water cooling. So the close proximity of the Sti's turbocharger helps cause the failure...now is it the aluminum that's failing or is the piston/valve, rings, lands going kaput because of elevated temps and knock? If it's the latter, that's not a problem with the aluminum block but rather the engine's layout which you alluded to. I mean the aluminum around that particular cylinder isn't melting away, right? It's not cracking? What about warpage?
#79
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I'll admit I didn't read this whole thread, accually probly like 3 posts, so if someone said this already, then I'm repeating it. The Evo has a turbo, you cant compare it to NA motors. You would have to base it off of a 4g63 without the turbo and a higher compression ratio. Otherwise it's apples and oranges.
Oh, and if I remember correctly, the rx7, and rx8 had the highest power vs. displacement. But that's a rotary, so apples and oranges again, sorta.
Oh, and if I remember correctly, the rx7, and rx8 had the highest power vs. displacement. But that's a rotary, so apples and oranges again, sorta.
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