Ive read numerous reviews about this crank pulley on the H22 motor and that its not good to have due to the chance of it vibrating too much. Is this correct??

also does the prelude have a harmonic balancer that would cause this problem??

I have been trying find out if it does or not...

And i am also contemplating if i should buy this crank pulley... I already have the AEM accessory pullies to go along with it..

thanks guys

 

Yes the prelude has a harmonic damper on the stock crank pulley.

I don't recommend running it, but if you don't good luck figuring out the belt sizing with the AEM pulleys as well you will be underdriving your alternator quite a bit

 

i have had my crank pulleys for 2 years now no problem at all works great

 

what are the problems that occur with having the unorthodox crank?

 

Do a search... there's TONS of comments about this. Some people use them for years without any trouble, others, their engines fail. Did the pulley cause the failure? Who knows. How the engine is treated/used is obviously going to matter, and makes finding the real cause of the failure all but impossible.

About the only thing we can agree on is some people think they're fine and others will never ever use one.

 

i typed in unorthodox in the search and nothin came up on the H22's....

 

Yeah, no problems with mine, either...Do a search for pulley or crank pulley...

The stock pulley has a small rubber ring in the middle of it that dampens vibrations that could hurt the crank....An UR pulley doesn't have this ring but it makes your car go faster...

 

I'VE got the ultra sc pulley on my car and so far no complaints or problems going on about 8mos.

 

unorthodox crank pulley havent had any problems with mine. had it for almost a year

 

guess imma get me 1? where can i get one from unorthodox for cheap??? ebay?

 

I had a theory that the real problem was oil starvation. The "proof" given that the pulley destroys engines are pictures of trashed main bearings. The stories I've heard are similiar in that #1 bearing is the worst, #2 not as bad, #3 a little better, and so on. This is offered up as proof the pulley did it, since the nearest-most bearing had the worst damage. Okay, fair enough, but the #1 bearing journal is also the first to run out of oil if there's a problem, since it's the closest.

Also given as proof the pulley did it is, "I've been running my engine hard for months, and a week after adding the pulley, boom." See, this just isn't conclusive enough for me. They admit they beat on the motor, and when it fails it must be the last part added?

I still don't know for sure either way, but anechdotal(sp?) stories just aren't very convincing for me.

 

Bottom line, running an h22 without the stock crank pulley willl increase harmonic vibrations on the crankshaft. The effects vary and there's no proof that it des damage, but the stock one was put there for a reason. You up your risk factor, and that's a choice you have to make.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">Bottom line, running an h22 without the stock crank pulley willl increase harmonic vibrations on the crankshaft. The effects vary and there's no proof that it des damage, but the stock one was put there for a reason. You up your risk factor, and that's a choice you have to make.</TD></TR></TABLE>

also, corrct me if i'm wrong, it would make a difference with how close an individual engine was balanced from the factory.

 

Everyone confuses the two issues. One is balancing, as in, removing material from an unbalanced crank - that's something else entirely. Harmonic balancing refers to filtering out, with the crank pulley, the torque pulses running back and forth in the crank, which are caused by the torque from the cylinders firing.

 

i've had mine for 2 years now and it runs prefectly fine. i've also hear that there is a way to balance it like the stock harmonic balancer on an unorthodox but mine wasn't i just torched the bitch on and i haven't had any problems yet. it was a very cheap good hp mod. just keep the stock one just in case. also many people say that knock off brands have a lot of problems but i haven't heard anything bad about unorthodox yet.

 

i have had mine for 2 years too and i have been driving it hard very hard so far so good no problems

 

going on 30k miles with the pulley, my H23 has 192k miles on it. no problems.

 

When using the UR crank pully did you have to use a diffrent belt, and if so, which one?

 

yes and they give you the part number with the kit.

 

so far everyone agrees its been ok in their motor. lets hear from the people who have had it and believe it was the cause to their engine failure

 

also i forgot to ask. i know on some cars the flywheel also acts as a harmonic dampener? now i was under the impression that our flywheels dont have a harmonic dampener. can someone correct me on this?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Krnbk2 &raquo;</TD></TR><TR><TD CLASS="quote">so far everyone agrees its been ok in their motor. lets hear from the people who have had it and believe it was the cause to their engine failure</TD></TR></TABLE>
Testimonials won't matter to me unless I see pictures of the main bearings. Crap like "it's working fine for me!" is pretty damn useless information. The effects of no crank dampening is really just to decrease the life of the motor. The bearings are going to take quite a beating, and it will likely take a year or two for the effect to produce a problem.

One thing I do believe in is the photos I saw of someone who ran the UR pulley on his B series motor, and took pictures of the bearings after 10k miles. They looked ugly. Those bearings had such horrible wear, and they looked like bearings with 100k+ miles on them.

The breaking point is likely to be a UR pulley run for 10k+ miles and lot of high RPM driving. The most likely result will be a spun main bearing, and then the crank will be toast.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by superjunprelude &raquo;</TD></TR><TR><TD CLASS="quote">i have had my crank pulleys for 2 years now no problem at all works great </TD></TR></TABLE>

have you pulled your block apart recently to check the internal wear? jsut curious

I have also searched about this topic numerous times on numerous boards.
I see both sides of the spectrum have firm beliefs in both.

Do a search on H-T and you will find about an hours worth of reading material.

Id run a modified stock pulley

 

Well, since I've never personally seen any dynos before and after the installation of a pulley does anyone have them. I have always been under the impression that they give very minimal gains.

Are these gains worth the chance of ruining your motor?

Unless someone can prove 20+whp for these things, it sure as hell isn't worth even the second thought of putting it on mine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gen4vteclude &raquo;</TD></TR><TR><TD CLASS="quote">

also, corrct me if i'm wrong, it would make a difference with how close an individual engine was balanced from the factory.</TD></TR></TABLE>

wrong, balancing the rotating assembly is totally different them balancing it harmonically