The idea is to have a covert big stroker, so can't really blame them.
Actually the H22A 87mm has been done, twice in Malaysia AFAIK. not sure if there's more.
They're high maintainance engines as well. They eat gaskets. with 2+mm seal between cyclinders, the gaskets don't really last long, unless you're using it as a full time drag vehicle.
But with 290/300+ hp NA power, hard to argue with that combo. :P
but there is a practical limit to having high wrist pin height on pistons, you can even have the wrist pin sitting slightly on the oil ring, but god knows how much engine oil gets consumed by doing that.
No one is doing the high rpm small displacement/short gear ratio combo successfully it seems. Then again, the low end power of a high rpm small displacement is really disappointing.
I think K-tech once had an appearance in a BMI video discussing on the effects of rod stroke ratio, and how they did it to get the car to rev past 10K.
Good luck understanding it though, it's fully japanese with no subtitles, and they were making fun of how even the BMI reporter/representative couldn't understand anything.
And if you're even contemplating that 87mm setup, sleeved blocks are a great insurance, I think the comp is around the region of 13-14+ with the H22A pistons, depending on stroke used. you can mill them for lower comp, but I'm not exactly sure how much can be removed before there's too little material in the center of the pistons. Solution is probably using forged aftermarket, but you'd be looking at pistons with no dome/slight dome to slight dish, depending on the stroke you plan to use.
Strokers alone, other aspects remaining the same, you can get less compression(and displacement) with 87mm B18C, and slightly higher with the B20 strokers, to the ultimate in crazy stroking, 92 from jun/crower, or 95 from crower. making a B24 a distinct possibilty. The parts are available, if you have the guts and deep pockets to do it, and bear with the higher maintainance cost than simply buying a K24/K20A and be done with it.
Note that these setups can be built, but if you're going to make it a daily driver, then I will go (O_o). Maybe daily driver for a worker that only sees 5-10 minutes of driving in traffic per day, lol.
That's why dart came out with the extended blocks, 10mm higher than stock deck height. For big stroker combos, or stock stroke with longer rods.
but at the prices, K20A/K24 combo starts to look cheap, lol.
But as the recent issue of honda tuning and Hytech attest to, the main limitation to the K series is the tiny oil pump. Not enough pressure for high rpm operation due to cavitation. Highest they can maintain stable oil pressure is up to 9K rpm only.
Any higher, and the only other choice is dry sump system, with pressurised oil passages. I'm not sure how much they sell in Malaysia, but Toda's dry sump for the s2k is listed as 10,000USD. (O_O) indeed.
