Mik3

I was watching a DVD from Japan, in where they mentioned that they had a 10k 2.0L motor and a 9k 2.2L.

Has anyone heard of this before? If so, who makes it?

white_S2000@16

honda makes it, all you need is a ecu from a some jdm co. that has a 10k rev limiter, or put our stock motor on a EMS and set the rev limiter accordingly. Id be curious to see if the 2.0l still makes power up there, if not woud be prety pointless stress on the motor i would geuss that @ 10k a stock 2.0 wouldn't make any more power there unless you had cams at a minimum. I geuss you "could" run the 2.0l to 10K but the piston speed is only 18 fpm slower then what i run my built 2.5L at, so you would definetely be testing the true strength of honda's 2.0l.
Here are the numbers: they are roughly done but are more or less accurate spare some decimals
Honda 2.0l @ 10K RPM =5,502 FPM
Honda 2.2l @ 9k RPM = 5,340 FPM
My 2.5L @ 8.5K RPM = 5,520 FPM

Mik3

What do you mean by "Honda makes it"? is it with their Mugen line? I know that pushing a stock motor probably woudn't make HP at that range. I guess my question should be, " What was done to the motor to make HP at 10k?"

Please excuse my ignorance, but I am unfamiliar with "FPM" Feet per minute? I'm assuming that a higher "FPM" is better?

I'd be intrested to know what you had done to your motor.

white_S2000@16

I dont know what car your specificly talking about that pushes the s2000 motor to 10K rpm, but my bet would be that they are using a sock s2000 motor made by honda. I never tried to run my stock motor to 10k rpm but unless you had some way to make it "breathe" at 10k rpm it would be pointless, because peak HP comes on just before redline i thinks its like 8,800 rpm. That being said you would need head work to make it "breathe" ie cams, ported head, valve springs and retainers. now that i think abou it the stock motor defenitely coudlnt run at 10k rpm with out valve springs and retainers or the valves would float which would probly lead to valve to piston contact.
FPM, is feet per minute which is justa rate of speed people rate piston speed. Its actually the reverse of what you siad though higher piston speed is worse then a lower piston speed. The faster the pison is moving the more stress on the rods and rod bolts

Mik3

Whoa! Thanks for the info, that's very helpful.

Is your motor stroked? I noticed you mentioned a 2.5L.

white_S2000@16

yes i have a built bottom end, which includes: sleeved block which is overbored to 89.5mm and custom crank with a 99mm stroke, custom rods and pistons with compresion raised to 11.5:1, im using a bone stock head off my 00' injen CAI and stock headers with a custom 2.5 to 3in test pipe and a 3in. exhaust also a competion clutch 6 puck metal clutch and a CC lightweight flywheel wiht 575cc injectors all run on a stock ecu and a VAFC that only changes vtec engagement to 5.5K rpm. The sotck ecu and VAFC make run like crap but still managed to rip off 250whp and 190ft/lb to the wheels which equates to 292 fly wheel horsepower! Im correcting the poor tuning with an EMS thats coming this week then when thats done im putting on my ITBs

Mr. Francesco

i thought the pistons hit the head at 10k revs?

white_S2000@16

i dont know the exact number but it is between 9.5 and 10k rpm, but you woudl def wnat at the minimum valve springs and retainers to even attempt this kind of build

VeilsideAP1

dude, there is no OEM ECU (or aftermarket JDM ECU) making 10k from the factory (in an s2000 built by honda)...


I'm assuming the video you are refering to is Battle at 10000 RPMS, with the J's S2, the C-Ken S2, To-Lap S2, so on and so forth. What you would need is an upgraded valve train, and a standalone, or the ability to hack the OEM ECU. Those cars are all track cars, so they are all built, and even if running stock internals, are blueprinted and balanced to run higher for longer durations. Not to mention none of them are on a stock Honda ECU... no matter where it came from...

Mr. Francesco

the thing is why would you want this kind of build...

the s2000 makes power from 6k up to 9k on a normal ecu and motor...

builind a motor that revs to 10k would just be braging rights. it couldn't make anymore power that high. their is too much to risk...

once my car is paid off im going your way...2.5 built motor with ITB's...

my problem now is im trying to learn about the ITB's and re routing the coolent lines so i can keep my heat and ac for daily driving...