NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   Dual Pulley Install (https://www.nopistons.com/2nd-generation-specific-17/dual-pulley-install-14812/)

pengaru 04-02-2003 02:56 PM

relocate your alternator to where the PS/AC bracket was previously and you can probably get away with

just single belt, and lowers some mass in the car too.

pengaru 04-02-2003 03:00 PM

http://www.evil7.com/images/evil7%20october%2011.jpg





something like that, the bracket should be easy to make, you just have to make the bracket adjustable so the belt tension is adjustable with the V belt setup, will probably need a shorter belt too. I plan to do this on my car. Cleans up the top of the engine some more also, I really like this modification.

Turbo II 04-02-2003 03:04 PM

but this is only possible when ps and other birdsnest is removed?

pengaru 04-02-2003 04:23 PM

yeah, obviously the **** has to be gone before you can let the alternator take over the area https://www.nopistons.com/forums/pub...IR#>/smile.png

winger 04-02-2003 04:28 PM

it probably cost more $$ and time to do it that way.....just use a dual alt pulley

pengaru 04-02-2003 05:55 PM

well duh, but it probably costs more time and money to make a NA rx-7 go fast than it does a t2....



it was just a suggestion, I like the idea, lowers CG, reduces rotating mass (single belt pulleys and single belt), puts weight back on the drivers side of the motor where it's been removed if you

ditched the AC/PS hopefully getting back some balance previously had.... and probably keeps the alternator cooler since the heat won't be coming up off the motor soaking the alternator.



sounds good ot me.

Baldy 04-02-2003 06:47 PM

nevermind about which way it goes on, I figured it out (duh, the bolt can't tighten on a tapered surface)

Baldy 04-03-2003 12:17 PM

Ok, I took the alt and pulley to pep boys. They took the stock off, and on of the guys thought it broke in half. That's when I started questioning their intelligence. So they put the new one on. It spins fine about 180 degrees, but the other half of the revolution is stiff. One guy says I need a spacer a hair longer (the one behind the pulley). He says he doesn't have one. So, being the paranoid-of-people-behind-counters guy that I am, I then took it to Advance Discount Auto Parts. The same thing happened, spins halfway, then stiff the other half. It looks like the pulley is rubbing ever-so-slightly against the alt housing. This guy tells me I'd need a longer shaft, because if I put a bigger spacer on, the nut wouldn't have enough space on the shaft (with stock, the nut is pretty much flush at the shaft).



What's the deal? Is the pulley a little off, or is my alt housing a little off? Or, considering they used an impact gun, should I just tighten it down by hand?

banzaitoyota 04-03-2003 01:05 PM

Sounds like you may have a reman Alt. that is slightly "off". put some prussian blue on the back side of the pulley to see where it is rubbing. You can also use "shim stock" to move it out ever so slightly.

Baldy 04-03-2003 01:15 PM

tell me more about this "shim stock"


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