Mellow Yellow

Many current cars are increasing there redline limits with chips, programers, and new computers. People have always done internal mods to increase the top in capabilities of there motors. What could this motor really do? 10k 11k 18k

just currios

pfb

Kinda depends on how long you want it to last...

You will never get an engine without a very short stroke to 18K. As it is, our S2K has piston speeds in the same neihborhood as F1 engines running at much higher RPM's, but with a much shorter stroke.

VaporTrail

The F20c is well suited to high rpms. It's 1.80 rod ratio tells you that. But a look at anyone's dyno graph would beg the question "Why?". With the factory cams, both power and torque peak well before 9k rpm, so to take it any higher than that would be an exercise in futility, and probably endanger the life of the motor. It could be done with some aftermarket cams, higher compression, etc, but it certainly would be less streetable than it is now.

Silver S2K

Power peak well before 9K???? I have always seen the power (HP) peak listed at 8,900 rpm. Does 100 rpm constitute well before?

Ben

10,000 rpm was done over a year ago, nothing new.

They've made civic motors do 11,000 semi-reliably.

It can all be done, but as vapor said, why?

At the least you'd need a custom built cam that would change the power curve and utilize the extra rpm, otherwise it would only be useful for a higher top speed in each gear.

HondaGuy

Correct me if I'm wrong here people, but isn't peak hp around 8500 rpm's, peak torque around 7500 rpm's, and redline is at 8900 rpm's?

Luis

I believe redline is 9000 and rev limiter 9200.

Red_s2k

Is not the limit at which time you get valve float?? Why would higher compression and cams change this? Stronger valve springs maybe... but if the engine ain't breathin'(possibly fixed by higher lift/longer duration... but still would have the spring problem, fixing the spring problem will generally result in less durability...) it ain't makin' hp ... therefore why do it?

VA S2K

Close. Peak torque is at 7500 rpm, peak power is at 8300 rpm, redline 9000 rpm (no brainer)

Mellow Yellow

I was just currious. I've raced for quite some time and I'm aware that it would be futile with current cam, intake, and ignition specs. However, I am just currious as to the limmits of the motor with the right internal mods. I've got a race car to tear up, I don't intend to do much at all to my s2k other than drive the **** out of it, and keep it shiny