solorex

i believe in lightened flywheels, but i also believe you have to have a good clutch to grab too.. as for whether it spools faster or not i dont know but i do know it made my all motor b16 crx alot faster.. ie. keeping rpm's high and not dropping in between shifting.... ---- aftermarket pulleys.....

nyc86zc

i have a 7lb flywheel in my car and it will spool quicker than a heavier one, but it also sucks for turbo cars becasue once you get on the clutch the rpm's drop very quickly and then you're out of boost. Happens to me. I want to put in my old stock flywheel because I need more rotating mass to keep the rpm's up while shifting.
It's also nearly impossible to chirp the tires.

91efate

this thread is funny. now people are saying that a heavier flywheel will spool faster lmao. thats like saying you can carry a 100 pound box up a flight of stair faster than you can carry a 10 pound box up the stairs. part of it is physics and part of this is common sense. some of you are choosing flywheels that are wayyy to light i.e. 6-7 pounds of course they will drop during shifting a better lightweight flywheel choice would be 11-12-13 pound flywheels i have a 12 pound jun and its perfect you get used to it you just have to launch at higher rpms and if in between shifts theres not much of a drop unless you shift slow as hell, i've found that for better times its best to rev match to keep the flywheel spinning. the only downsides are loss of torque down low and in the middle of the powerband and less inertia so the flywheel will spin faster but will also decel faster than a oe flywheel so!:

light weight flywheel pros :revs faster, builds boost faster,instant engine response,higher fwhp #'s due to free'd up weight,clutch "bite" will be more notice able,allows higher launch rpm
light weight flywheel cons: less inertia, loss of tq,flywheel slows down faster between shifts(the lighter the wheel the faster it slows down),

oe flwheel pros: flywheel remains spinning off throttle during shifting, more torque,more inertia,very slow flywheel decel between shifts

oe flywheels cons: more weight in rotating assembly,slower revs,slightly slow to spool max boost

you decide

krustindumm

no drift cars use light flywheels, because it lets them get the rev's up and get into boost sooner. I do know this because alot of my friends drift too (short list of the cooler cars: S13 RHD RB25DET (now sold)S13 SR20DET x2, S14 SR20DET, S14 RB25DET x3, S14 KA24DET now swapped to 1JZ-GTE). Lighter flywheel = better.

Honda engines are completely balanced internally. Prople having problems with bearings being taken out by underdrive pullies should blame the fact that the cheap ebay pullies are probably not balanced. If the flywheels were balanced with the engine, then you would need to index it to install it on the crank the same way when you remove it.

crx90rcr

my input is that the heavy flywheel will make boost at lower rpms but itl take just as long to get there as the light flywheel wich would boost at higher rpms.i beleive this will only happen only in first tho the rest of the gears should b the same . i also think the ligher fly wheel will make ur car faster so w/e

Jmunk

I'm waiting for Steve to come in here and own the this thread like all of the others that he post in.

catch.can

i know there are too many inputs here rite now, we need someone that actually knows what there talking about from experience

catch.can

this might clear it up for some of you...
http://autonet.ca/SunDrive/Toronto/s...46410-sun.html

MikeJ-2009

My verdict is this thread is pointless. Does more money mean you own more drugs, or does more drugs mean more money in your pocket. :P

I always use a stock flywheel because I feel the weight helps keep the momentum of the tiny honda motors we play with. You don't have alot of displacement waiting for the rest of the weight to get up to speed, you have low displacement and the weight helps keep the momentum going. (that's once you get it spinning) And even with 10k posts, my opinion isn't valued by any engineers. It's just an opinion.

91efate

im speaking from experience. i've driven cars with many different weight flywheels 7lb-stock and i know the differences and characteristics im not speaking from "hear say" in the end it all comes down to preference. the way i compare is to -----:
some like it shaved(lwf) and some like it hairy(oemfw) either way its still -----