04 with 9k redline?
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From: Vienna, VA
Originally Posted by RazorV3,Sep 24 2004, 08:51 AM
wouldn't valve float be a problem since the piston speeds would be so high(on the 2.2L @ 9000 rpm)?
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From: St. Augustine
Originally Posted by Highrpmek,Sep 23 2004, 06:50 PM
why do you want a 9K redline. I mean logically think it out. What would that do for you. To me it just means you have to wait longer to shift that slick shifter.
Now to your topic. You would need stronger rods and a lightened valve train to make it the least bit reliable. Does anyone happen to know what the S2000 race cars in Japan redline at? (Amuse, J's, ASM, C-west)
I know for a fact that Amuse uses the USDM engine.
Which means, for once every other country got the watered down engine and the U.S. got the more powerful engine. Everyone in Japan wants USDM parts now. How ironic. And if the U.S. was the only country to not get the 2.2L everyone in the U.S. would want it.
Put that in your smoke and pipe it
Ryan B.
Now to your topic. You would need stronger rods and a lightened valve train to make it the least bit reliable. Does anyone happen to know what the S2000 race cars in Japan redline at? (Amuse, J's, ASM, C-west)
I know for a fact that Amuse uses the USDM engine.
Which means, for once every other country got the watered down engine and the U.S. got the more powerful engine. Everyone in Japan wants USDM parts now. How ironic. And if the U.S. was the only country to not get the 2.2L everyone in the U.S. would want it.
Put that in your smoke and pipe it
Ryan B.
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From: St. Augustine
Originally Posted by dreamcation,Sep 25 2004, 10:16 AM
Why's are people saying this picture is JDM, that's no different than my 02 USDM 
I just realized that my tach goes all the way the right side 
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From: Texas City
Originally Posted by steven975,Sep 24 2004, 11:08 AM
no, at a given RPM, the valves open and close the same number of times no matter what the stroke (and resulting pison speed) is. A F20 and F22 at 9000rpm will have identical valvetrain activity.
with you in that the valve train activity will be the same but are the valve trains themselves the same?I've read a bit that shows that Honda went to great lengths to reduce internal engine friction in the F20 to make it easier, or at least less stressful, for the engine to operate at the upper end of it's rpm range. They did a pretty good job of it too. The F22's red line was lowered by 800 to 1000 rpm and Honda, being Honda, might have also lighted the valve springs on the 2.2 engine to reduce internal friction or stresses involved since the engine won't be visiting 9k rpm anymore. That kind of change would only net a fraction of a percentage point but Honda has always been good about nit picking the little stuff.
I'm not saying that this is the case in fact. I'm just offering it up as a possibility for those who think that just because the 2.0's valve train will do 9k safely then the 2.2's "must" also. I wouldn't make that assumption. It would be "very" costly if I was wrong.
Maybe one of you dealer employees can have the parts department look up the part numbers for the intake and exhaust valve return springs on the 2.0 and 2.2 to see if the numbers are the same. If they are, then I wouldn't worry about 9k as far as the valve train is concerned. If the numbers are different..........I'd be less inclined to push it until I knew exactly what the difference is.
Just a thought!
Drive Safe,
Steve R.