yeah the k20 has 86mm of stroke compared to the k24s 99mm.......so clearly the k24 bottom end is far more desirable.

a k24a4 makes more torque stock than my h22a4 did with all the bolt ons.

 

So the stroke is shorter on the H too? I know a longer stroke gives you more torque, while a shorter can give you more RPM and more HP right? Is 99mm relatively a long stroke? I feel like my little 2.4l is real torquey from a stop, but I've never been in MT to compare so that's prolly just the torque converter lol.

 

Yeah H22 is 90.7mm F22 is 95mm F23 is 97mm

And yeah the less stroke the more rpm, and sorta more hp.

So 99mm is really long stroke, and hence how they get 2.4l out of a 4cyl. BC makes a 103mm crank for the k24..........oh so tempting lol. But its like $3,500.

Yeah the accord makes like 160ft/lb of tq which is quite a bit.

 

Man don't start getting me into engine mods too, that sounds like too much fun. I would love to pull my engine tear it down and rebuild it just for kicks.

 

yeah with a k20a2/z1/k24a2 head you can make 200hp and have real vtec. only problem is the stock pistons will hit the valves so you have to swap in TSX pistons/rods or aftermarket pistons.

Then from there the upgrades are limitless.

Well that and switching out the engine harness to a RSX-S/Civic SI so you can run Kpro/EMS.

 

What do you mean real VTEC? After certain mods do just you disable the VTEC by locking the both rocker arms together or is it because it's a whole new head with no VTEC and just top end performance in mind?

 

real vtec as in power making high rpm vtec not gas mileage midrange vtec like the f22b1 and k24a4 have.

No I would still actually run vtec, as do most high performance cars. If anything you just get "VTEC killer" cams which don't have the vtec lobe and are just super aggressive all the time. Makes it sound like a snowmobile at idle.

 

So the lobes are more aggressive but there is still one that opens longer and higher right?(Or are they both the same? Making it really not VTEC) Then the VTEC kicks in and locked them together right? That's how I was explained plain ol VTEC works. How does the iVTEC work, I have theroy but seems a bit advanced for a honda lol.

 

Yeah VTEC is a middle lobe that is higher and longer, well except in the k24a4 and f22b1 and other midrange BS vtec motors.

From my understanding, and I am not completely sure on this. I-VTEC is computer based where as just VTEC is oil pressure based. I standing for intelligent of course.

So you've never felt real VTEC?

Go get a ride in a prelude/swapped civic/si/rsx-s/s2k/tsx etc etc.

 

I cant remember if I did or I didnt...duhhhhh