Pulleys and flywheels...

[GrayCar]

So, there are two active threads here about lighter weight pulleys and flywheels...

I understand that less mass to spin, means less power eaten up by the mechanicals of the motor, so more power to the wheels.

The $20,000 question is... How much?

Or, is it a 'feel' kind of thing? Like the flywheel enabling you to rev up faster.

Thanks.

[theone]

from what i understand u gain an equivalent of 2.7hp for every pound lost on the crankshaft.

u dont get 2.7 hp.........but what its saying is, it will feel like u've got 2.7hp from the weight lost


thats what i got from reading about flywheels

[GrayCar]

Interesting...

So how does that apply to the pulleys? I've heard similar experiences from the folks that got pulleys.

[theone]

its the same, the pulley are liter than stock.
like the crankshaft pulley i just brought, stock is like 5-6lbs
unorthdox is 1-2lbs
basically smaller, liter and less rotation is necessary to move them

[93ACCLUDE]

The lighter the pulleys the less power it takes to work them so that is how u gain a little power. same with the flywheel. a stock flywheel can weigh 25-30lbs and take a fidanza flywheel for example only weighs 8lbs. plus on a flywheel you can rev up faster with it being so light. pulleys and a lightened flywheel are very good mods. do them at the same to and u will feel a difference.

[GrayCar]

So what are the downsides then to lightening up all your spinning hardware?

[pwrusr]

I had a few friends with lightwaight crank pulleys, their engines didn't like it too much. ended up with very warn main barings. So in the end they went back to their OEM pulleys with hormonic balancers on them. I'm pretty sure that they had H22A motors in their cars, so I'm not sure if it's ok to use with the F22s. I'd ratheir be safer then sorry.
If you can live without power steering you can have that pully shaved off of the stock pulley and have it balanced at a mechine shop. That will retain the hormaonic balancer.

if you don't believe me search www.honda-tech.com or www.superhonda.com
I'm pretty sure they have pics and all to back that info up. again the H22A is the ones that REALLY do NOT like lightwaight grank pulleys.
for all I know it could be fine on a F22...

[phatdoughnut]

some say you loose a lil torque or what not... the pulleys are not only lighter but a difference since than stock, i cant remember which one is bigger and which one is smaller...

or you can just take off your PS belt, and try it out, if you dont like it slap it back on. i personally like no PS..

[pwrusr]

yeah same here, I can live without PS
I think it's a better idea to just get a lightwaight flywheel. I plan on keeping the pully stock or maybe shave the PS pully off

[phatdoughnut]

and if you have stereo equipment, IE lots of amps and watts, i dont recommend using the alt pulley because it fucks with your amprage(SP?)

[H23Accord]

I had the AEM set on my car and when I idled my lights got dim...not my HIDs but the rest of my lights. Once I was past 1000rpm everything was back to normal but eventually it ate up my battery and alternator and so I had to get a new one. It pissed me off so much I took them off and sold them. It was not a lot of bang for the buck on my engine. It accelerated smoother but the negatives outweighed the positives for me. I have an upgraded alternator and power wire now so I shouldn't have the problem but I just don't feel like dealing with them anymore.

[iamanonymous]

but is it safe to have lightweight pulleys and flywheels at the same time? i've heard both, but the maker/seller of my stage 3 clutch and 10# flywheel said DO NOT put a lightweight CRANK pulley on my car. hmm....thoughts? btw dohc f22b 14b turbo

[Michalob]

well, i have both a lightened flywheel (12 lbs.) and lighter pullies (including the crank) and i found out there was a big difference. the pullies were probably the biggest difference i did to my car that i noticed.

i have an 1800 watt amp also and with the less drag of the alternator... welp. it still hits as hard as it does. so dont be afriad of that situation. sure it does reduce the power from the alternator... but it doesnt stop it. if you have a well mantained battery, you wont have to worry bout a dead battery. (i even live up north and no bad effects form cold starts)

and for the thing with crank being bad. i really dont believe so. the harmonic balancer arent taking off when ya change pullies. they are retained no matter what. the OEM crank pulley are balanced, but the new crank pullies are also balanced.

pwrusr, from the sounds of your friends problems. i doubt the crank pulley was the main problem causing main bearing damage. The main problem of main bearing being damaged are well. over reving it. my friend not to long ago spun a bearing (h23) and he even admitted to taking it redline all the time.

I dunno. thats some of my input on how i feel. i don't beleive the pullies are necessarily a bad thing. and i do admit on reading some horror stories, but theres no "real" proof. From me having them though, i love the pullies and the lightened flywheel. Much better output throughout gears and very quick revs.

[pwrusr]

actually the light crank pully is solid aluminum the stock pully is steel with rubber to absorb shock and stress from the belts. which again is why I plan on keepin the OEM pully. honda designed it that way so why change it... ya know?

[Michalob]

that rubber piece is the elesper, elasper ring? something like that. this has been covered on a very large debate with very knowlegable people. that ring is still there, unless taken off, and still helps absorb the vibration. My OEM crank pulley doesnt have that rubber ring there anymore.

Honda also made many cars for economy, reliablity, and so forth. The civic type-r has a "OEM" light weight pulley. it can be found on hmotorsonline.com. They put that on because well, its a performance racing car. These crank pullies are nothing new to honda. and well. i might as well use the same technique.