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12-20-2011
Ok so I was despartely googling for a new rotor pack for my m90 and stumbled upon this site M90 LIGHTWEIGHT ROTOR PACK - Mace Engineering Group
of course its for a holden commodore but its still an m90 based l67 eng ine so in theory it should work right???
Sorry if this is posted in the wrong place hope this helps some people out...
12-20-2011
interesting. i would love to see a set of these in my hands..
12-20-2011
I agree with Bio, very interesting. Would like to try a set. But still $664 after converting to USD. Plus shipping.....that's way to expensive IMO. lol
12-20-2011
yay, .5whp gains.
Shipping alone would cost 200x more than this mod is worth. Willing to bet if you fire up a dremel and a drill motor on a stock rotor pack you can start removing weight easier than having someone 4500 miles away do it for you.
12-20-2011
lol, good plan.Originally Posted by darkhorizon
12-20-2011
i was thinking it might be stock rotors with some cores taken out of each lobe, but i could be wrong.
12-20-2011
All they are doing is modifying a stock set of rotors.... Its not any specific science, any machine shop in town could work with you on balancing them after the fact.
Would be fun to try, but I doubt its worth the effort... even doing it yourself you would struggle to do it for less than $150.... a set of ported heads would make way more gains...
12-20-2011
Just because someone doesn't agree with you...doesn't give you the right to sit there and report every single post...and it isn't just me.
To add,
I'd NEVER drill into a rotor pack for a supercharger...I'd love how it "might work" but what about longevity issues? Structural soundness...I for one would leave it alone. The trouble you have to go through to get it to work...it's a waste. HP per $...bottle feed it and slap a set of headers on it and go three times as fast. OR, you can upgrade to a GenV for less than what they want for that...OR hell, you can even put a TVS1320 on your 3800 per SnowFlake if it is based off of his cost and still go faster.
To the OP...I'm sure if you had the tools and did the work yourself and all it cost you was materials and time...then it might be worth it.
12-20-2011
It has nothing to do with your disagreement of what I said its the simple fact that it was a driveby "lol ur a tard" post with no explainations.
You then come back around and make THE SAME post I did? So do you agree with me or what?
12-20-2011
You may be able to order them from these guys Stiegemeier Porting Services, LLC - Supercharger Rebuild and Repair. They have a pic on their site.
12-20-2011
I agree it is a waste of time...but I disagree about drilling out to lighten the pack...or whatever you would do to make it seem more efficient...if anything...I'd modify the case...port and polish the inlet and open up the outlet and delete the bolt bosses...which would probably do way more than messing with the rotor pack.
In the long run, it is a waste of time anyway you slice it...the GenIII M90 is a awful power adder.
12-20-2011
I was wondering if anyone was ever going to mention this.
There are benefits, but for the cost? Better power adder might be a better option.
12-20-2011
im still stuck between a turbo setup or a bigger blower. :/
12-20-2011
6-71? lol
12-20-2011
i dont know what i want. it will change once i get the car, as it always does.
12-20-2011
nick, i think thats how everybody is...ive gone back and forth on a million different things i want to do to my engine...turbo...topswap...full out engine build, built tranny...blah blah blah
12-20-2011
Too much cash for the benefits. If it atleast was a twinscrew conversion pack and not a modded stock one, it would be more interesting.
12-20-2011
Enter: Hybrid Swap.
12-20-2011
Technically if it actually added up to 20whp like they claim.... It would be REALLY worth it for quite a few guys. As I said $150 is about what it would take.. and if you have no other options (like had a intercooler/xpz) it could offer some really key gains, if it works as advertised.
12-20-2011
Stiegemeier's Lightweight Rotors - SVTPerformance
The Eaton is a Roots style blower, where the air is compressed by the blades against the walls of the blower housing.
The Whipple/KB are Twin Screw blowers, where the air is compressed between the blades instead of against the housing. More efficient, less heat generated.
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