Has any one gone to a shop to have an Unorthodox eccentric pulley installed? What did it cost? I tried seaching.

 

I don't know about the costs, but make sure they know what they're doing!
I recently installed mine and I can only imagine what damage a bad install may inflict.

 

I got a quote from Lowe Performance which is my closest rx7 mechanic and they said about $200-300. I am guessing I could get it done cheaper but at some shop that works on a rx7 once a year. I am just trying to see if that is a reasonable quote.

 

Ask them how much they charge per hour for labor. I would assume you'll get charged probably 2 hours worth of labor, maybe 1 and a 1/2. So figure about $75-85 per hour.

 

Then that is close they said it they would change some seals that are in the same area cuz they are prone to leaking.

 

http://reganrotaryracing.tripod.com/unxhoror.htm

I'd look for my 10 hp elsewhere, hehe.

 

Why is it that one or two people have a problem with and install do to there error that everyone finds out and you never hear about all the people that have no problems?

 

Just FYI. If you got the jist of the article, the potential problems with the install is not something that is readily apparent - but now that you (and who ever is installing this for you) is armed with this information, I'm sure you will have no problems.

Best of luck!

Daniel

 

Ah, now that I think about, I'm guessing that most people do not realize that main underdrive pulleys are different from manfacturer to manufacturer - and are installed differently.

To the best of my knowledge, ONLY the Unorthodox main pulley requires the removal of the main eccentric shaft bolt. All the other pulleys are mounted via the 4 perimeter pulley bolts that screw into the front stationary gear.

Removing these four bolts involves no extra care, so replacing the main pulley with a under drive pulley that was designed with just removal of these four bolts is extremely simple. Anybody that can work a ratchet can replace this type.

With the Unorthodox main pulley, the eccentric shaft bolt most be removed too. Why? Probably because Unorthodox wanted to replace more of the pulley assembly for even less rotating wieght then other 'regular' under drive pulleys. The difference is probably no more then 2-3hp benefit.

The problem is (if you read the article), this same main eccentric shaft bolt also holds togther a needle bearing assembly that is sandwiched between a bearing plate and the stationary gear. These needle bearings are held in place simply by the pressure from the bearing plate and the stationary gear - as from the tightening of the eccentric shaft bolt.

When you undo this eccentric shaft bolt, and happen to bump the bearing plate, these needle bearings will more then likely fall out of place. Remember, the needle bearings are situated vertically - and the law of gravity dictates that with nothing to hold the needle bearings in place, they will fall out.

The only easy way to do this is for the bearings to be turned over onto a horizontal position so that it rests on the stationary gear and therfore does not try to fall out of their places. The only way to do this is to stand the car on its tail end, or take the engine out and and stand it on its rear end. Guess which is (relatively) easier?

As the article points out, its not impossible to install the UR pulley with the engine situated in its normal position - just have to be alot more careful.

My suggestion? Get one of those pulley kits that does not require removal of the eccentric shaft bolt, save the labor cost, and do it yourself. You'll be down by 'only' the 2-3 hp, but with more green in your pocket.

Best of luck!

 

I already have all the other pulleys installed would it be possible to just install the part of the pulley that has the belts contacting (like the other sets) to the stock pulley? Or is it a different diameter?

 

Not sure if other underdrive main pulleys are the same, but if they are close in size, I'm sure you simply you can simply adjust the tension for it. I'm pretty sure you can also retain the stock main pulley too, but probably will have to find different lengths of belts for this.

I actually had a RP main underdrive pulley, but decided to stay with the stock now that I am going to a two battery electrical system (motorcycle PC680 up front and a slightly larger sealed in back). I'm worried that underdriving the alternator too much will make it not able to keep up with with the pair of batteries.

Also, I meant that the other underdrive main pulleys are bolted with four bolts to the pulley boss. I'm a dumbass hehe. I think that the UR main pulley replaces this boss as well. Can anybody with the UR confirm this?

Hope that helps!

 

When I bought my car, my front oil seal was bad. No big thing I thought since it was just held in by ONE bolt...connected to the eccentric shaft.

Either way, I took all that crap out of there(radiator, ic, etc.) and went into the car and pushed down the clutch, while Dragon went in and hit the bolt with an impact gun.

Took out the oil seal, and replaced it with my "NEW" oil seal.

Thanks GOD that my needle bearings didn't fall!

 

I just can't get the damn bolt loose!! Hit it with the impact wrench and used a fence post on a breaker bar wouldn't loosen so I am just gonna wait for my rebuild and have it installed then. If anyone wants to know the UR pulley part will not fit onto the factory pulley part that mates to the engine. The four bolts that hold the two halves together from the factory they go in from the front of the pulley and on the UR the bolts go from the rear of the pulley.