Thread: 4CW vs 8CW vibes

hmmm so it kinda comes down to, do ya wanna rev faster.. or higher..

Very interesting. Can you post some more facts to back up what you are saying? Even though you said you 'feel'.

I have a 170+hp Sr20ve set-up and planning to go lightened flywheel but this throws a spin into the whole decision.

Already I was pondering, cause my present flywheel is a bit lighter than stock SR20. It's 16lbs or so since it's from my old SR16ve motor.

Peace

Don't let all this talk scare you. I have had my ve with 9lb flywheel and UR crank pulley since I bought the motor three years ago. I have since put around 80k on the already used 40kish motor. Over 100 runs at the strip and good abuse on the street, still running strong. Revving to 8K BTW

Facts? Clearly, you understood I said the feel so how would there be facts. I gave results of how the setup was perceived. Go ahead and do the same setup and you will find out for yourself. 1st gear revs so quick that shifting to 2nd with a stock gearing de box loses momentum and almost hesitates or floats at the same rpm for a time. Shorter gearing (as i was saying before) would not be an issue and would make it alot more enjoyable.

@ Jer 760,

No it doesnt scare me. My friend with a lightened flywheel in his sr20ve admits that his car is ver aggressive in 1st gear. So I wouldnt say scare me.

I know it's a very good upgrade but each mod comes with pros and cons.

Really dont wann de-rail the thread though and hope we can stick to the topic. Maybe we can pm each other on this.

Maybe I am just looking some justifications to stick with my sr16ve flywheel. LOL

Peace

he said he had a sr16ve before.. so maybe he had the sr16 trans, an there for has a different ratio..

Thanks for the clarity.

Please ignore my asking for 'facts'.

I have 2 friends using lightened flywheels with their sr20ve but both are using sr18 trannies which have shorter ratios. Guess you are using longer ratio SE-R tranny?

Think I will stick with my sr16ve flywheel - at least for now til I can afford a lightened flywheel. LOL

Peace

Yes, I'm using an se-r tranny , but have an sr16 trans waiting to go in. I'll chime in on how that feels when the time comes

The 4cw is the future. Most current 4 cylinder engines already have them.

The new Duratec from Mazda (Miata)/Ford (Focus) is 4cw, so is GM's Ecotec. These "world engines" are use all around the world under different Makes: Saab, Volvo.

There's a SAE paper written about the 4cw vs. 8cw. The conclusion was the 4cw has more positives than negatives, better fuel economy, power, throttle response, cheaper. The 4cw did vibrate more but it was negligible, too small to matter.

What does it mean for us? Have fun with your engine, rev it out. Just replace the rod bearing when you do a rebuild.

from someone that knows far more than most: