Have to replace my crank pulley after the bolt in the middle worked it's way lose and the pulley shredded my alt. and p/s belts, I blame the idiot mechanic that replaced my timing belt a few months back. i pray this is all i have to replace. anyways the part is $120 from the dealer. My question is it worthwhile to get a lightweight crank pulley rather than the stock one, i think i read about a 5 hp gain, does that sound right? Any downside to this? anyone who has done this on an h22 lude, please let me know if it was a noticable difference and if it is worthwhile. thanks

 

I have an Unorthodox Racing crank pulley and love it. You really feel it in the mid range.

 

Just make sure you use the stock dampener.... this is only based on what ive heard. Search for dampener and it may unleash a bit more info.

Im doing a h22 build up and am about to use a simular pulley. If I can find one of the earlier crank pulleys without the PAS part I shall be using that, I would of thought thinner = lighter

 

there is no stock dampener.


and i have used the unorthodox ultra-r pulley for years, its a 13 oz alternator only pulley.

 

where did you get it, they dont list one on their site....

 

It's a waste. Spend the money on something that is worthwhile, and not possibly detrimental to your engine.

 

Unorthodox Ultra-R pulley is what i got had it for over 2 years. not sure what hte part number is or if htey even still make it. never had an issue yet...

 

using a lightweight crank pulley isn't going to ruin his motor.. no matter how much people say it will, it won't, i hear arguements all day, but if they did rui motors, they wouldn't make them, and people wouldn't buy them

 

should any crank pulley put on an engine be perfectly balanced? I have an ebay crank pulley for the h22 and have hacksawed off the PAS part of the pulley. Im wondering if there is a need to get it skimmed or balanced at a machine shop?

 

^ All of the internal engine parts are balanced. Im sure the crank pulley has to be balanced as well.

 

yes, a crank pulley must be balanced. most aftermarket pulleys are , but that is not the only thing to consider. the factory crank pulley has a harmonic damper in it, if you notice the rubber insert between the inner and outer part of the pulley. this is VERY important. the easiest way to explain why it is so important is this: any running motor has vibration in the rotating assembly(crank,rods,pistons) this vibration also known as engine harmonics, must be absorbed somewhere. without the harmonic damper in the crank pulley, the vibration will be transfered into other areas such as the oil pump gear, over long periods of time or short periods of the worst harmonics, parts WILL start to fail. this can cause your oil pump gear to shatter, as well as your crankshaft to break among other problems. this is just a short, easy explanation. there are everal other more scientific ways to explain harmonics, i would suggest checking into it! there are also aftermarket companies who make pulleys w/dampers in them such as fluidamper just to name one. only prob. is they are usually very expensive roughly around 500. keep in mind you get what you pay for.

 

^ Nobody makes an aftermarket crank pulley with the damper in it (for the Lude).

 

fluidamper makes one, i have already spoken w/ them about it. its not an off the shelf part, they will make it for your needs.

 

I was looking at the fluidamper for a while. It is off the shelf considering they list in plain as day on their website. My question is, is it really light weight? I haven't found any information about it's weight, just that it is perfectly balanced for all engine RPM and not just a specify part like the stock one.

 

I was hesitant when choosing an underdrive pulley for my lude and made sure to purchase one that was balanced. The UR pulley is balanced and very light. I've read posts going both ways and I've seen pictures of main bearings with abnormal wear on them, but I'm going with it anyway.

And to be precise I thought the crank pulley on the h22 was not a Harmonic balancer that it was just a pulley.

 

havent checked their site in a while. not sure how light they are, but thats not what they are designed for. even if it were to be a little heavier than a stock balancer i would run it w/ my setup just to protect the motor. the lightweight aftermarket pulleys such as u/r provide very min. gains if any. i tried one several years ago and picked up less than 2 hp. no way thats worth risking the motor. even if you were to gain 5 hp like they say...still not worth it. also not worth spending several hundred dollars on a dampened pulley for a stock or mildly built motor, stock pulley works fine. now if your running a 2.4 liter and making ALOT of power, the stock pulley was not designed for that, so go w/ the fluidamper.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alkaloidz &raquo;</TD></TR><TR><TD CLASS="quote">I was hesitant when choosing an underdrive pulley for my lude and made sure to purchase one that was balanced. The UR pulley is balanced and very light. I've read posts going both ways and I've seen pictures of main bearings with abnormal wear on them, but I'm going with it anyway.

And to be precise I thought the crank pulley on the h22 was not a Harmonic balancer that it was just a pulley.</TD></TR></TABLE>

all oem honda pulleys are "harmonic balancers" w/ the possible exception of the ctr pulley. havent really checked into that one, but it looks to be one peice, alt. only. dont know if there is a damper inside?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Missing Gears &raquo;</TD></TR><TR><TD CLASS="quote">all oem honda pulleys are "harmonic balancers" w/ the possible exception of the ctr pulley. havent really checked into that one, but it looks to be one peice, alt. only. dont know if there is a damper inside?</TD></TR></TABLE>

Harmonic Balancer = older v8's... not internally balanced honda motors

Harmonic Dampener = dampens some of the vibrations that come through the crank to limit vibration on the accessories like PS, AC, Alternator.... (mainly to cut down on noise) &lt;----This is what alot of oem honda pulleys are considered.

 

Just to put in my $0.02...

I have had the AEM pullys in my 5th Gen Lude for 2.5 years now... while I can't say that I have noticed any difference in power, I have also not had any problems with them.

 

AEM's pulleys are only the upper half.. what they are debating is using an underdrive pulley.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jd3jdm &raquo;</TD></TR><TR><TD CLASS="quote">

Harmonic Balancer = older v8's... not internally balanced honda motors

Harmonic Dampener = dampens some of the vibrations that come through the crank to limit vibration on the accessories like PS, AC, Alternator.... (mainly to cut down on noise) &lt;----This is what alot of oem honda pulleys are considered.</TD></TR></TABLE>

ALL motors have internal harmonics/vibration. are you trying to tell me a harmic balancer is for accesories? better do your homework!

 

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

are you trying to tell me a harmic balancer is for accesories? better do your homework!</TD></TR></TABLE>

It is on a Honda. better do your homework!

I have been without a 'harmonic damper' for over 2 years now without problems. How would this be possible if it's needed to balance the engine???????

 

I just had mine turned down at the local machine shop.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Missing Gears &raquo;</TD></TR><TR><TD CLASS="quote">ALL motors have internal harmonics/vibration.</TD></TR></TABLE>

Yes they do. Does this mean that a honda uses a harmonic balancer? NO!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Missing Gears &raquo;</TD></TR><TR><TD CLASS="quote">are you trying to tell me a harmic balancer is for accesories? better do your homework!</TD></TR></TABLE>

On a honda motor yes that is what I am telling you. I have done plenty of homework.

 

if they were a dampener or balancer honda would call them such. honda calls the part a Crank Pulley.

NOT a dampener.

NOT a balancer.