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JohnJL JohnJL is offline
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Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,726
Hi,
I got your PM, I'll try and help here...

The documentation on Autorotors has always been a challenge. The external dimensions on the 417, 420 and possibly others are the same so that's no help. The intake and general dimensions of what you have there look similar but not identical to the 417 I had and the 420 I have now. The numbers after the "4" refer to the numbers of litres of air moved per revolution. I don't know what to make of your engraved figures.

I get north of 450hp at the wheels with a 420 running a 60mm pulley off a 120mm crank pulley for an effective max sharger rpm of 13000 at an engine rev limit of 6500 at 12psi boost. That's with a lot of other mods so YMMV.

There is a Miata tuning shop out there that uses the same opcons, their website has some info. There is one opcon page out there two with some graphs but not much else. I'll look.

I'm abroad right now with no access to my hard drive but if you search my name you can find some pics of my unit.

I hope that helps, I'll look for more...
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Old 06-24-2014, 07:57 AM
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