mikefrombarrie

What do you guys think about the Ultra Series pulley sets from Unorthodox Racing
they claim they give you 10.9Hp at the wheels. which sounds like a its worth the $280


but is it true?

Fanman

Nobody here has dynoed them yet. I have the SR Motorsports units & they didn't dyno anywhere close to 10.9 hp. I seriously doubt their claim.

mikefrombarrie

Nevermind, I should of done a search before asking.....

hmmm, so the conclusion is that the Pullies are worthless!

bureau13

Probably somewhere between the claimed horsepower and worthless. I'm sure they'll give you some benefit, just not a huge one.

jds

Fanman

SR Motorsports claimed 18 whp. I was lucky to have gotten 1.8 whp from them. Honestly if you get 2-3 whp from pullies that would be lucky. You look at them to take off a little weight, free up a little hp. If you take 2 lbs off & free up 2-3 hp that sounds about what you should expect.

superhuff

I have those exact pullies on my car. They are great pullies. I dynod exactly the same hp with and without them. But i noticed a nice difference in the middle gears. They definitely increase throttle response. But have NO EFFECT on the top hp of your car.

ILIV48

That's exactly what I am hoping for. I have my UR pullies on order and am hoping for them to help pad out the mid range a little and increase throttle response even more. Not so concerned about max HP.

My Lightened Flywheel gave me some extra mid range urge and throttle response, and if the Pulleys can provide another increase similiar to the flywheel I will be very happy indeed.

mikefrombarrie

so you guys are saying, even though the pullies dont give you any Horsepower when dynoed. you can still feel the the difference verus stock

but is it worth paying $280?

bureau13

Its somewhat misleading to say they don't give any horsepower when dynoed. If there REALLY is a perceptable difference in midrange power in the lower gears, then it should show up on the dyno curve, it just won't show up as an increase in peak power. Peak power is more about bragging rights than actual performance anyway.

jds

superhuff

Your exactly right. I noticed a big difference in my 2nd and 3rd gear pulls big time with the new pullies. But as you said you wont see a difference in peak power.

Richard Paul

iTrader: (5)

If you guys keep believing advertisers claims I'm going to start making pullies.
The flywheel can make a difference in the lower gears, not when the rate of acceleration slows. It does not add hp. The pullies are a little different. There is less weight reduction on a smaller base circle.

I'll tell you what, I am getting my own 8 very soon. I will tell you the truth, we shall dyno it and then I will make the lightest set of pullies possable that will still live. I will go to the extreem with lightnig tricks. No matter how much machining it takes, just for the sake of testing the limit. I will design a set using FEA programs and get the last gram. That way we will all know.

Fanman

Honestly, I noticed i difference when I got my flywheel put in. I did not with the pulley install. If you want to spend $300 I would tell you to go with a midpipe, or you are halfway to a Canzoomer unit or nitrous kit.

smrx8

iTrader: (1)

i just got order the Unorthodox Racing pullies today i will dyno the car too .ill keep you guys posted.

mikefrombarrie

Wow! I just noticed all of your MODS! Your car must be completely different now!
Which mod would you recommend I do first?

The turbo would be nice, but I think I will do that last due to $$$

Fanman

Do the RB suspension package first (F/R Sway Bars & springs) this will help the road feel tremendously. If you are not planning to turbo for a while then do the Can Zoomer piggy back ECU box & tune it. If you will turbo it & want some hp right now than look at a midpipe. If you are planning to do the turbo, do the flywheel at the same time you beef up your tranny (pressure plate & flywheel). Dropping the transmission is not a small job, might as well only do it once. Very few things give lots of hp for this car. intake, exhaust, etc only give a few hp each. Exhaust will help the sound of the car a lot, but be careful if you get a midpipe & exhaust it can get very loud.

mikefrombarrie

hey, Fanman


Can you post some pics of your car? mainly the engine compartnment


Thanks

Fanman

Here You go :

The whole engine :



Air intake, air inlet & BOV

N20SA22C

I saw these on a car show on Speed Chanel called "Sports Car Revolution" and they dynoed just over 10whp with only that mod in the RX-8. I was suprised and it wasn't the manufacturer making the claim they have never had UR on there before. Wondering if anyone ever dyno'ed a good # themselves with them, especially if it was in the lower/mid range.

Kyle

Richard Paul

iTrader: (5)

I keep saying "one more time" and here we are again.

I looked into making these pulleys for the 8 just because people keep asking for them. If you want them just for "bling" then go for it.
If I made these things as thin as I dare they would only be slightly lighter then stock. I'm talking Oz's here not Lbs. Lets assume we could get half a pound out which we can't from the main pulley set up. If that could add 10 HP then how much can we get from a flywheel reduction of say 5 lbs? Consider the base radius difference. You'd have to gain 40 hp from the flywheel.

Talk about radius, how much can you gain from lighter tires. Just think if these oz's were taken from the tire od as in wear you'd get great gains from used tires.

I don't know how they get those numbers but belive me if there were anything to gain, I who own a machine shop would have them on my car. Think about that for a min, I could go in on a Sunday and whip out 10 hp for myself. Free.

Fanman

I agree with Richard. It's all hype. I have a set from SR Motorsports and the weight difference was negligible. Got a whopping 1-2 hp across the rev range.

I watch that show, though haven't seen that episode though.

TeamRX8

iTrader: (25)

all pulleys are not created equal ...

Fanman

There are 2 ways pullies creat more power :

1. Lighter weight. As we have pointed out the stock RX8 pullies are already very light. Weight reduction (and hp gain) in this case is minimal.
2. Underdriving. In reading some of UR posts they did not go too crazy with the underdriving ratio here. Again somewhat similar to SR Motorsports.

So unless they are sprinkling some magic fairy dust somewhere I think this stated hp is grossly overstated.

TeamRX8

iTrader: (25)

well SpeedSource sells a kit through MazdaSpeed Motorsports for racing use only that they use on their GrandAm Cup cars and strongly stand behind their power claims, but one item you left off your list is to eliminate drive functions, in this case the A/C belt drive function which this racing set does, so perhaps that is where some or most of the gain is coming from

bu like I said, they are not all created equal, the amount of underdrive, weight loss, fricion elimination, etc. factors in greatly, so to simply say that all RX-8 pulley systems suck based on your experience with only one particular set is potentially misleading.

Now I'm not claiming you're wrong and I'm right, again I only said that all pulley systems are not necessarily created equal ..

Fanman

Sure I get your point. I like my AC though, so I think comparing a racing set vs. street set is a bit different. Like we pointed out weight loss is minimal (the stock pullies are litearally a few pounds, these aren't like 15 lb. V8 units), amount of underdrive is about the same, friction elimination (? unless they are like teflon coated or something, metal is metal if they use the same belts, they have the same # of ribs). To go from 1-2 hp to 10 hp one has to wonder. I do question the hp reports. I would rather have a few knowledgeable posters post independent dyno reports on THESE pullies, but until then call me skeptical. Not bagging on you, just don't think their claims are realistic. Hell, SR Motorsports claims 12 hp.

army_rx8

hmmm were can i obtain this magic fairy dust you speak of.....