[BIGCU]

I'm thinking of buying an Unorthodox Pulley for my 94 GSR, but I'm also have a stereo system, and I heard its not good with it, what are pros and cons of the pulley?

I did a search and couldn't find anything so thats why I'm asking.

Mods I got are headers, exhaust, CAI, magnacore wires, Bosch 4+ plugs.

 

[StyleTEG]

Here are two good threads with plenty of information on the subject.

AEM Pulleys

Pulleys

 

[BIGCU]

what problems occurs when using the Unorthodox Pulley??
no one really mentioned anything in the 2 threads

 

[stovee]

With a stereo system you really should invest in a high output altinator. Ive heard hooro stories about dead batteryes and such with pulleys draining power. You should call up unorthodox and ask them what they recomend you do, they would know best, and they wouldn't stear you wrong.

 

[dragontegz]

besides your alternator not being able to recharge your battery enough to run big stereo system, the underdrive pulleys are not recommended because it replaces the stock unti which doubles as a harmonic balancer. if you care about your engine, you should skip this mod. the most you're going to gain from underdrive pulleys 1-3 whp anyway. the aem underdrive pulley don't replace the harmonic balancer but the gain is even more negligable since you're going to be "underdriving" 1 pulley instead of 2 like the unorthodox.

don't call unorthodox. they'll tell you what you want to hear so that you would buy their product. there is no ethics left in business anymore. it's all about marketing and making money even if the customers are the ones getting the shaft.

 

[MichaelDelaney]

either you believe the honda crankshaft pulley is a harmonic balancer or you don't. If you don't, and many do not, then you would go ahead and buy one. But if you do and plan to run the engine hard in the upper rpms, you would avoid them like the plague...it all comes down to what you think is true.

I've heard arguments from very well respected people on both sides of the fence.

When smart people can't definitively agree on a point, then I tend to avoid the part altogether until someone can come up with a convincing proof to nullify the other side. To this day I have yet to hear one from either side proving to me beyond a shadow of a doubt that this is a risk free addition. So I look to other places for gains and leave well enough alone there.

 

[DK4200]

Unorthodox Racing Pulleys are far more a better investment then AEM Pully Kit... With AEM you only get 1 or maybe 2 Pulleys. With Unorthodox Racing you get 3, Crank, Alternator and P/S. With a stereo system you can leave everthing the same but i recommend a capacitor. I have the Pulleys and also have a 1 farad cap. You can get a 1/2 farad cap and it will work also. You can pick one up for about 100.00. But i definetly recommend Unorthodox Racing pulleys above them all

 

[DK4200]

you also get a nice hp and tourque gain!!! and thats what it is all about!!!

 

[Greg]

can you show us a dyno of this gain?

 

[96GSRTEG]

I had the unorthodox crank pulley on my crx. I could tell a difference in it. A month later I put an ACT lightened flywheel on and damn was that worth the money.

 

[goose7700]

I have a friend that runs a stereo shop (Ultimate Audio for anyone who lives in florida) and he says to stay away from pully's if you are running a steroe syetem. He has a 99' stang gt that is dynod at 413whp so I think he would know what he is talking about.

 

[MASSIVEINTEGRA]

i know this article has been covered, but ill throw my a couple of comments in, ive got a competition car audio system with 2800+ true (not jensen) watts. im running the ultra r underdrive crank pulley, i have no problems with my alternator, im running dual drycells with a batcap and capacitor also and everything charges to 14.7 volts on a stock alternator, been that way since oct. no problem motor wise or electrical wise.

 

[JustinKlemgold]

I had the unorthodox crank pulley on my crx. I could tell a difference in it. A month later I put an ACT lightened flywheel on and damn was that worth the money.

??? Butt dyno anyone???

 

[96GSRTEG]

who the hell said anything about HP? I meant it revved up a lot quicker.

 

[MichaelDelaney]

lightened crank underpullies make power. I don' think anyone is disputing that. It's the risk of damage if it's not acting as a harmonic damper that is the "controversy" here.

Oil pumps usually are the first casualty of a crank underpulley in a real road racer which keeps it's revs above 6500 rpm for at least 30 min. straight and ventures near the redline a lot more than a 12-15 sec pass here and there.

Chromoly steel oil pump gears would be a wise investment with a lightened crank underpulley if you believe the harmonic dampener argument.

As I said, there's no objective data to swing the vote one way or the other and if the risk is out there, then I'm not gambling my investment to a cheap modification that can throw it all away in a heartbeat. But that's really a personal choice you have to make and no-one else can make it for you. This is like the hydrolock fear mongering out there. Yes it can happen. If you are worried about it then don't do it. Simple. No need to wring your hands with worry and anxiety or obsess over it. Just move on to bigger and better things...that's what I did.