Does it make a difference? Is the difference noticeable?

 

anyone?

 

Ive got one from AEM for the alternator, its on a brand new alternator and the pulley is brand new too.

I dont have the belt though and I cant comment on its productivity becuase Ive never used it.

If you want it though make me an offer with or w/o the alternator.

 

Don't get a kit that replaces your crank pulley, or you will spin a rod bearing. But yes they do work, but if you have any kind of amplifiers don't do it.

 

" Don't get a kit that replaces your crank pulley, or you will spin a rod bearing. But yes they do work, but if you have any kind of amplifiers don't do it. " - CRXBart

Can you iterate on this more? Explain maybe how you can spin a rod bearing by having an underweight crank pulley? Something to do with less rotating mass? I've installed 2 in my life, both on Mitsubishi Eclipses and they actually gave noticible gains with absolutely no problems. Installed them over 2 years ago without a problem. Looking to get one for my DOHC ZC soon, so if there's a problem I might have, plz drop me some info with valid sources. - Darrell

 

The Honda pulleys are harmonic ballencing pulleys your mitsubishi is internally balanced. Without being balanced it causes premature bearing wear. Mista Bone on this forum has first hand experience, he killed a rod bearing in only 10k.

 

Ic, totally 4got about the balancers. Great info and thnx again. - Darrell

 

my b16a didnt have a harmonically balanced crank pulley stock.

so screw it i bought a jdm civic type R n1 pulley.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stolencrx &raquo;</TD></TR><TR><TD CLASS="quote">my b16a didnt have a harmonically balanced crank pulley stock.

so screw it i bought a jdm civic type R n1 pulley.</TD></TR></TABLE>

Yes I forgot to include that B-series do not have harmonic balancers. Just D-series. So your ZC you should probally leave the crank pulley alone.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXBart &raquo;</TD></TR><TR><TD CLASS="quote">

Yes I forgot to include that B-series do not have harmonic balancers. Just D-series. So your ZC you should probally leave the crank pulley alone. </TD></TR></TABLE>

i could have swore they did.....they dont have the elastomer band?

 

all honda motors are INTERNALLY BALANCED

 

I've run the Unorthodox crank pulley for years. Runs great. D16A6 motors DO NOT have ANY type of balance system in the stock pulley. NONE. The oil pump, however, is designed to remove some harmonics. The UR pulley will not effect your harmonics at all.

 

https://honda-tech.com/zerothread?id=665358

I value Mista Bone's testimonial way more then 90% of the people on here. Listen to what he has to say. Just trying to save you from catastrophe.

 

Mista Bones post isn't bs. I know of this first hand with my friends ZC, it was a very clean imported block, both inside and out. He thought it would be a great idea to install and UR pulley. Later on he swapped back his stock pulley from what he had read. A few weeks later, his #3 rod snapped and put holes on the front and back of the block. Harmonic vibrations can only be absorbed in one spot unless the engine has been balanced and that is in the pulley that came stock with a huge solid chunk of rubber.

 

Finally someone with a head on their shoulders!!! Listen to me Unbalanced, undampened pulleys are bad! B-series need not apply for their lack there of a dampened balanced pulley. CRXRageD Good looking out!!!

 

I've been messing with sohc and dohc d series for well over 5 years now. I've broken plenty of parts to know what works and what doesn't. Suffice to say I'm still not done working on my turbo motor. And I'm still discovering what works and what doesn't. Under drive pulleys are only good on engines that have their internals balanced in unison with that no balancer pullley.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXRageD &raquo;</TD></TR><TR><TD CLASS="quote">I've been messing with sohc and dohc d series for well over 5 years now. I've broken plenty of parts to know what works and what doesn't. Suffice to say I'm still not done working on my turbo motor. And I'm still discovering what works and what doesn't. Under drive pulleys are only good on engines that have their internals balanced in unison with that no balancer pullley.</TD></TR></TABLE> What if you have a lightweight flywheel?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXBart &raquo;</TD></TR><TR><TD CLASS="quote">Finally someone with a head on their shoulders!!! Listen to me Unbalanced, undampened pulleys are bad! B-series need not apply for their lack there of a dampened balanced pulley. CRXRageD Good looking out!!!</TD></TR></TABLE>

Okay. I'd love for you to show me a picture of the dampner in a D16A6 pulley. Please post the pictures. There is no dampner in there. I've cut them in half before. Nothing but metal.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Matrix_Zero &raquo;</TD></TR><TR><TD CLASS="quote"> What if you have a lightweight flywheel?</TD></TR></TABLE>


exactly, its the same ******* concept and i have had absolutely no problems with running my 9lb flywheel for almost 3 years now

 

No it isn't even the same concept. The crank pulley is balanced and dampened. The flywheel is not. This issue has been covered many times if you guys search you will find it to be correct. Don't mess with a hamonicly balanced crank pulley.

 

If you look at your crank pulley on the car, you will see the side with all the metal. If you look at it on the other side there is a big black rign, made of some fierce material that is like rubber that does all the dampening.

Take yours off and find out. I don't have any pics, but stock d series crank pulleys pretty much resemble each other.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Steve91 &raquo;</TD></TR><TR><TD CLASS="quote">

Okay. I'd love for you to show me a picture of the dampner in a D16A6 pulley. Please post the pictures. There is no dampner in there. I've cut them in half before. Nothing but metal.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXBart &raquo;</TD></TR><TR><TD CLASS="quote">No it isn't even the same concept. The crank pulley is balanced and dampened. The flywheel is not. This issue has been covered many times if you guys search you will find it to be correct. Don't mess with a hamonicly balanced crank pulley.</TD></TR></TABLE>

you are telling me the flywheel is an unbalance piece of metal? someone is confused and it sure as hell isnt me

 

Uh no, flywheels should be balanced themselves before you ever install it. Now the concept of usin an underdrive pulley is to use in conjunction with a internally balanced engine, flywheel and clutch. This is the right way to do it. You can get away with omiting the flywheel and clutch but thats what the dampeners for.

IMO, the release of extra power is negligible especially, if you aren't making big power. When I mean big power I'm talking north of 400hp. In that case you are trying to get every ounce of power available.

If that were the case, I would understand why you installed one in the first place, but if you are making power like that you would most likely have built the engine internally and had it balanced irregardless.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by temp &raquo;</TD></TR><TR><TD CLASS="quote">

you are telling me the flywheel is an unbalance piece of metal? someone is confused and it sure as hell isnt me</TD></TR></TABLE>

 

if your flywheel and crank pulley are properly balanced and installed correctly,then you should be good to go

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXRageD &raquo;</TD></TR><TR><TD CLASS="quote">If you look at your crank pulley on the car, you will see the side with all the metal. If you look at it on the other side there is a big black rign, made of some fierce material that is like rubber that does all the dampening.

Take yours off and find out. I don't have any pics, but stock d series crank pulleys pretty much resemble each other.

</TD></TR></TABLE>

Not on a CRX. Later D series yes, but not the A6. In fact, the first crank pulley on the early 88's were stamped steel. They later went to cast iron. But NEVER did they have a balancer.