So I bought a Dual Alt Pulley from here http://www.rotaryinnovation.com/new_products1.htm

And to my understanding this pulley only fits 86-91 RX-7 Alternators as the title says.

But I have a FD alternator so this means that I would have to get this pulley machined somewhere to fit the FD alternator shaft due to its larger size.

I Just need some clarification. Thanks in advance guys.

 

Yes, you will have to get that one machined or fabricate a new one to fit the FD alternator. It made me sad when I realized that after having bought and gone through the process of destroying my old alternator to remove it.

 

It's a 5$ part. I forget the part# but it is a mittsubushi(?) brand.

 

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The part number for the cadmium plated steel dual alt belt pulley is P-164 (WAI# 24-83100) priced at $4.00

Part description is 3/8 X 2 11/16 X .592 which equal to 10mm belts X approx 68mm OD X 15mm bore.

Double sheave pulley off of an 86 or so 6cyl Chrysler with Mitsubishi alternator.

 

I did the same swap and was using the same pulley. I had problems with the length of the FD shaft on the alt, I ended up getting the pulley specifically for swapping an FD alt onto an FC

Here's a link to my thread about that

 

So basically this pulley will NOT work on the FD alternator even with custom machining?

 

It very well may work once it's machined. But there is apparently some variance in FD alts. There appears to be some difference in length of the shafts, some also have lips that need to be ground down. Yours very well may only need to be machined.

If I were you I'd simply get the pulley specifically for the swap.

 

Do you know where I can purchase one? Specifically for FD alternators.

 

Forget the locking washer and use locktite blue.

 

im confused does this work for a 2nd gen alternator?

 

YES

Then find belts to match.

 

Thanks, I came to that conclusion. I however couldn't find that pulley anywhere. One supplier said he should be able to get it... for $20.

What supplier did you buy from?

 

he bought it from the rotaryinnovation website, but I don't think he will ever receive it. The phone is off and the emails bounce.

 

yeah i tried to buy one from rotary inovations and i never recived it either

 

Should I file a dispute?

 

i did and paypal gave me my money back in a few days. they couldnt contact them

 

so if the information is correct i have opened an account with a company that has them instock. i have ordered it and is on the way. i have spent 15 dollars I will recive it and see if it is correct. i am told the belts wont change but we will see when it arrives and if the belts do change I will put a kit together with the belts and pulleys and you can just go to your local parts store and pick them up. I will keep everyone posted

 

That's too bad. I bought the rotary innovations one for my S5 alt. Then when I upgraded to a 3rd gen alt I ordered the Banaitoyota one via ebay. Interestingly enough they both shipped from the same address...and now you can't find banzaitoyota on ebay either.

 

Whats more sad is the only other dual alternator pulley that I found that does not underdrive is tweakit....and thats a long way to ship.

 

you know banzaitoyota is on our fourum and he seems pretty active. i only notice 2 items a month or so from him, but never a dual pulley. it sucks because he's a valuable source on this site and to the world. but I have heard of many people as you JUSTJEFF that has had great service from them both. who knows, we will see if i have the answer to this problem and might be able to source the rx7 community with quaility dual pulleys as we all should run instead of the ol' yoo hoo. lol

 

Hey. Dre can you tell me where you got the pulley? I would like to purchase one also. I shall file a claim with paypal!!!

 

yeah man as soon as I get it in im gonna test fit it to make shure before i go and spread the news about it, and im gonna let the rx community know. my supplier has hundreds in stock. If it works out im gonna order a slew of them. i think the price with out a business account was 28 bones plus shipping im gonna sell them for 20 bucks or so, that should take care of shipping everywhere. im not looking to make anything i just want a buck or two for the time it took me to cross reference and find a supplier. but I will get back to yal asap

 

Dude let me know asap! I need that FD alternator installed soon.

 

now tell me your installing an FD alt instead of a FC alt. i need to find out what the shaft size is on the FD alt because the pulley i ordered is for a FC alt. i will do some homework on the FD alts tonite then.

 

**** i would buy one for 20 shipped