Sup dudes..
So acouple of weeks ago me and a friend where recharging my ac when I assume the gasket on the compressor gave away. I doubt it was a hose we blew. Anyway I know it's really bad for the freon to leak into hour atmosphere so let's just say we cought it Just in time. Since then I've decided to remove the ac all together since I bought this car with the intentions on tracking it. I've also decided to install a EWP. I found an Alunimum EWP150 KIT, DaviesCraigs manufacture that is comprible for our motor. RX8Performance caries a convertion plate for the water pump. before you start chewing me out about how unreliable Electrical systems are, let me stop you there. DaviesCrag has designed a remote that performase many task. Such as disconnecting the fans from the ecu and being able to control them and the pump while the car is off. You can control the amount of pressure being delivered upon temperature. Also it can test the system to make sure everything is working correctly. Since its wired to the ignition system I assume if It did fail while you where driving it would blow a fuse and turn everything off. I guess this aliminates any possiblity of critical failure. right?
I am ordering these parts and I'll keep people up to date during the build in case you are interested. I will also be changing the coolant to Evans cooling. Good reviews. And since there is practically no pressure with the EWP but a constant flow of fluid. I think this combination can eliminate bubbles at high RMPs we experience that could possibly cause hot spots and kill the side seals.
Any way the purpose to this thread is because I am interested in lighter wieght pulleys. One that is not underdrivin(modified diameter that allows less rotations) and possibly one for the alternator as well. I want to maximize the gains from having less drag on the motor. Since I am down to utilizing one pulley now I don't know how short of a belt I need. Anybody got an idea?
Thanks

 

One way would be to take the old belt, stretch it over the pulleys you will be using then cut away enough that the remaining ends meet with the alternator adjustment a hair short of fully retracted, Then glue the ends together and take that to a good auto parts jobber and get them to measure it for a replacement using the belt guage they got from the belt manufacturer. That should result in a belt that still gives plenty of adjustment at the alternator. Just be sure that when you have a correctly fitting belt you write down the part number where you can find it easily if/when you need to replace it.

 

thank you sir. will do. i was just hoping someone did this mod and knew the answer so i could have everything ready. thanks for the feedback

 

What pump are you using? I'm trying to figure out the lowest flow possible to keep temperatures stable.

 

If you want pulleys talk to the water pump flange guy ....

The adapter works well...I had one on my Renesis and it was perfect for the track

 

Subbed for interest, gl

Edit: also 134a is probably not too bad for the environment. Its cas # is 1112. Thats the exact same thing in several air dusters on the market. People are releasing it into the environment all over just to avoid grabbing a vacuum cleaner or dust brush.

 

I would be more worried about having to little of flow. After all the water cooling system removes 2/3 of heat and the oil cooling system keeps the other 1/3 out of the engine.
I don't really think you have to worry about flow as much in a EWP since it is not controlled by RPM. It should be able to deliver an adiquite flow rate even at high RPMs. Which is when the OEM pump is know for water cavitation.
I plan on using 150L(40Gal) per minute as I mentioned in the initial comment. I'll be deleting the water thermostat since DaviesCraig offers a controller used to manage operation both on the EWP150 and both fans if desired.

 

Noted. Be sure to let us know if it cools well enough under higher loads.

Thanks!

 

Fo Sho