NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   3rd Generation Specific (https://www.nopistons.com/3rd-generation-specific-18/)
-   -   New Product: Super Light Weight Power Pulley (https://www.nopistons.com/3rd-generation-specific-18/new-product-super-light-weight-power-pulley-21057/)

rotaryextreme 07-29-2003 01:27 PM


Originally Posted by Razerx' date='Jul 28 2003, 08:49 PM
Chuck, seen many threads, very interested in this, as well as the engine brace you spoke of that is in development. When are these ready for sale?



BTW what is a realistic HP gain from the power pulley? The 20 HP numbers by some just seem unrealistic.

The engine brace damper is already under production. I already presold a few. I have about 4 sets unspoken for. If you want it, just go to http://www.rotaryextreme.com/enginebrace and you can preorder one. It will be done in about 10 days.



20rwhp from a pulley kit is unrealistic. Even if it were true, mine will outperform those simply because it's lighter. To be realistic, you should gain about 10-12 rwhp depending on the engine load.



I am going to dyno tune a car in 2-3 weeks. I will slap on the pulley kit and get some dyno numbers for you.



Chuck

rotaryextreme 07-29-2003 01:29 PM


Originally Posted by IGY' date='Jul 28 2003, 10:09 PM
Is your pulley going to work with no air pump? I had to go with the larger Greddy pulleys because the belt was not getting good enough contact on the water pump pulley. It seems to me that your pulley would just make the problem worse.

Since the pulley is already smaller, it will make it worse if your belt is already slipping with the stock pulley.



I am going to do some size measurement on all those pulleys so I can determine how much it's going to underdrive if you use this one with the Greddy pulley kit.



Chuck

rotaryextreme 07-29-2003 01:33 PM


Originally Posted by Dragon' date='Jul 28 2003, 10:40 PM
Now can you make a stock sized one for us guys that already have the greddy kit, but want the weight reduction.. https://www.nopistons.com/forums/pub...#>/biggrin.png a nice power steering pully would be nice too..

Yeah, I can make it but the only problem is that I need to make at least 10 at a time or it's going to cost too much. If we have 10 people prepaid on the stock size aluminum one, I can do $175+shipping for the pulley only. Since it's the stock size, you are keeping the belt from the greddy pulley kit.



Chuck

rotaryextreme 07-29-2003 01:39 PM


Originally Posted by Dragon' date='Jul 28 2003, 10:40 PM
Now can you make a stock sized one for us guys that already have the greddy kit, but want the weight reduction.. https://www.nopistons.com/forums/pub...#>/biggrin.png a nice power steering pully would be nice too..

The power steering pulley is hard to make due to those spines in the middle. It will be more cost effective to buy the RE Amemiya one. They probably make a bunch of them to reduce the cost.



Chuck

Razerx 07-29-2003 03:32 PM


Originally Posted by rotaryextreme' date='Jul 29 2003, 10:27 AM
[quote name='Razerx' date='Jul 28 2003, 08:49 PM'] Chuck, seen many threads, very interested in this, as well as the engine brace you spoke of that is in development. When are these ready for sale?



BTW what is a realistic HP gain from the power pulley? The 20 HP numbers by some just seem unrealistic.

The engine brace damper is already under production. I already presold a few. I have about 4 sets unspoken for. If you want it, just go to http://www.rotaryextreme.com/enginebrace and you can preorder one. It will be done in about 10 days.



20rwhp from a pulley kit is unrealistic. Even if it were true, mine will outperform those simply because it's lighter. To be realistic, you should gain about 10-12 rwhp depending on the engine load.



I am going to dyno tune a car in 2-3 weeks. I will slap on the pulley kit and get some dyno numbers for you.



Chuck [/quote]

thanks Chuck,



is the $220 forum discount still in effect for the powerpulley? if so how do we go about ording?

rotaryextreme 07-31-2003 03:32 AM


Originally Posted by Razerx' date='Jul 29 2003, 12:32 PM
[quote name='rotaryextreme' date='Jul 29 2003, 10:27 AM'] [quote name='Razerx' date='Jul 28 2003, 08:49 PM'] Chuck, seen many threads, very interested in this, as well as the engine brace you spoke of that is in development. When are these ready for sale?



BTW what is a realistic HP gain from the power pulley? The 20 HP numbers by some just seem unrealistic.

The engine brace damper is already under production. I already presold a few. I have about 4 sets unspoken for. If you want it, just go to http://www.rotaryextreme.com/enginebrace and you can preorder one. It will be done in about 10 days.



20rwhp from a pulley kit is unrealistic. Even if it were true, mine will outperform those simply because it's lighter. To be realistic, you should gain about 10-12 rwhp depending on the engine load.



I am going to dyno tune a car in 2-3 weeks. I will slap on the pulley kit and get some dyno numbers for you.



Chuck [/quote]

thanks Chuck,



is the $220 forum discount still in effect for the powerpulley? if so how do we go about ording? [/quote]

Yeah, the $220 discounted price still applies. The pulley kits will be done in about a week along with the engine brace dampers. You can just paypal $220 to rotaryextreme@aol.com and mark the subject as " light weight pulley kit" and I will get it out to you once it's done. Thanks.



Chuck Huang

7racer 07-31-2003 11:39 AM

Chuck,



are the belts for the pulley easily replaceable and findable???

suprfast 08-03-2003 06:40 AM

im guessing not since this isnt a part of the intake or exhaust but would the ECU need to be reprogrammed in any way for the pulley?

kris

Dragon 08-03-2003 06:54 AM


Originally Posted by suprfast' date='Aug 3 2003, 03:40 AM
im guessing not since this isnt a part of the intake or exhaust but would the ECU need to be reprogrammed in any way for the pulley?

kris

nah, that wouldn't be enough of a change to do anything, it'll just create less load on the engine and the computer will then look at a diffrent block of information.. Much diffrent to changing the air flow in and out of the engine... No problemo...

rotaryextreme 08-03-2003 11:59 PM


Originally Posted by 7racer' date='Jul 31 2003, 08:39 AM
Chuck,



are the belts for the pulley easily replaceable and findable???

Those belts are regular goodyear belts. You can get them from your local auto part store.



The pulley kit does come with belts if you are wondering.



Chuck


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