getting custom crankshaft pulley made?

Hey guys, Taj the car guy here,

I tinker around at my shop and dream up custom stuff mostly.

Right now I need to have a custom crankshaft pulley fab'd, for a mitsubishi 4G63 engine, 9", for single 6-8 ribbed belt. I already bought an aftermarket aluminum pulley to use as the center for it.

This is quoted text from about 2006, NASIOC thread:

"I am holding it in my lap and just admiring it right now. Its a piece of freaking art! 

The pulley started as an EBAY donor underdrive pulley and a 1" thick piece of 12"x12" square aluminium stock from McMaster Carr. The outer ribs of the donor pulley were turned off. The block was turned round and an opening was turned into it.

Then the donor pulley was frozen and the outer section heated and then they were press fit together. Once they came back to room temperature, they were not going anywhere! To top it off, the machinist then put 4 pins in the ring section to tie them together 100%. He also turned it down to about 5.5 pounds, although I have yet to weigh it, although it weighs less than whatever the stock 5.25" stock pulley weighs.

I may lighten it a tad more, by installing it in a mill and rotating vice and drilling holes in it. We shall see. Depends upon how much free time I have tomorrow."

Now, he found his machinist from grassroots motorsports forum, he said!

Can anybody point me in a direction of someone?

Welcome Taj.  Can you make a sketch of what you want?

Dan

here's a pic https://imgur.com/a/zazwWPU

and original build here (post #464): https://forums.nasioc.com/forums/showthread.php?t=605625&page=19

Well, here's a start....

oh, onlinemetals.com

$74 + shipping from mcmaster carr, the 1" thick 12"x12" 6061 aluminum, I can get that here

I'm really looking for a machinist professional who is comfortable building this custom part for me, really doesn't matter local UT or I can ship stuff anywhere

I've owned a lot of mitsubishi cars, many builds 4g63t and 6g72tt. Currently I'm going for a new custom build and first step is get that eaton M62 supercharger I have (with electronic clutch) mounted to the engine with a 9" crank pulley to get it in the speed range and boost I desire. 

If the stock pulley contains a damper, I would strongly discourage replacing it with a solid chunk of aluminum. FYI.

In reply to Keith Tanner :

I appreciate it Keith, I'm aware and I know very very well these things I'm playing with.

Does anyone know any machinist who's worked on lathe turning a custom crankshaft pulley before? Maybe I need to look into some supercharger specialty forums..