lilgookiemonsta

OMG
is this possible?!??!?!?!?!

ArchAngel2K

it has gotten ridiculous at what race cars are becoming now just to get a bit of an edge on the competition. if you will notice in the time attack Spoon sports left their NA roots and went turbo.
but back on topic with the whole destroking thing bad idea. if you want to get most out of your F20 or F22 you need to go bigger. if you squeeze an orange hard enough you will get out a lot of juice but you will start destroying the orange. if you get a bigger orange you can get the same amount of juice but not destroying it. if you are wanting to de stroke to get more revs out of the engine then just get the bore and stroke close to the same size. you will have revs and power

21337R

^^ Do you seriously think that orange juice and horse power are relative? That is a horrible analogy. Your thinking is flawed... the F20C is slightly under-square (87x84) and the F22C is slightly over-square (87x90). By your logic.. a perfectly square (87x87) would rev higher than an F20C???? No way.

LostMotion is one of the few who actually understands this concept. The ideal setup would be a larger bore (allows for larger valves=more flow) and a shorter stroke to keep piston speeds down to a safe level. If my goal is a higher revving motor, I MUST reduce the stroke. Will it lose low end power? Absolutely! Would it hinder daily drivability? Absolutely. Would it have a smaller and pointier power curve? YES! that is my goal, NOT MAX POWER. Would this power curve, coupled with a lightened s2000 be the funnest thing ever? HELL YES. Why would I want to do this? for the same reasons that I prefer an F20 to an F22

ArchAngel2K

Flame on Johnny Storm!!! if you just want to be a dumb ass and go rev happy just throw a phucking ZX14 engine in your S just dont hurt the F20 by de stroking it.
use your bad ideas on like a b18 or something dont phuck up Gods perfection

LostMotion

If you pull 4mm of stroke and add 2mm of bore you will still have an F20C/S2000 with volume to spare.

You need a custom crank made though...

21337R

So, im flaming because I called you on your flawed logic? You don't make any sense.


I am just so happy that you saved me $4k and 2 years to learn about orange juice.

ArchAngel2K

and your reasoning for what it is you want to do is stupid as hell.
think about my logic for a second and it will make perfect sense

LostMotion

I don't really understand your logic. F1 engines are 2x bore to stroke and make plenty of HP. The TQ of an F1 car is just over 200, but they seem to do ok with their 2.4L NA.

Now you can't rev to 20k in a street car. Traditional valve springs fail at 12k (drag racing applications excluded) and you should have a margin of safety on the road. So you won't want to rev past 11k at the highest. You just need to figure out how much you need to destroke to keep the mean piston speed the same as the F20C at 9,400ish RPMs.

You're right that this destroked motor may not be very reliable. But considering the reliability of the average stroked motor I'm not sure he'll be losing anything.

LostMotion

The stock mean piston speed is 25 M/S. Assuming you were willing to increase this to 25.5 M/S, you would need to destroke the motor to 70mm in order to rev to 11k which would give you a displacement of 1,741cc.

By the way 1,741cc is 0.000480589278266 cords of firewood.

S2Kage

LoL!