M62 Porting!!

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11-11-2004, 12:13 AM

#11

DrJay

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I don't really understand how this would reduce the intake temperatures. The heat is caused by the turbulence of the uncompressed air in the supercharger being thrown into the compressed air in the plenum. Anyone know why the outlet size would affect this?

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11-11-2004, 08:05 AM

#12

Rogue

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Quote:

Originally Posted by http://www.miata.net/garage/billa_sebring.html

The distributor of the Eaton blower, Magnuson Products, 3172 Bunsen Avenue #K, Ventura, CA 93003, (805) 642-8833, will modify original Eaton M-45 blowers to include the improved "*-trim" flow features and recondition the units for less than $300. The "turn-around" for this porting and reconditioning can be as little as 48 hours! "*-trim" is presently provided with all new Sebring units.

Info on the reasoning behind porting a supercharger:
http://www.zzperformance.com/zzp/inf...werporting.htm

Quote:

Originally Posted by http://www.rtmmotorsports.com/Lightningcatalogue.htm

Eaton Supercharger PORTING now available from APTEN - click here!
YES! the Results are true! an extra 20 to 41rwhp on the dyno. 500rwhp is now Achievable out of your Eaton

There are plenty of other places on the net that show that porting a supercharger does have some advantages mostly reducing the temp of the intake charge allowing you to move cooler air (and hence be able to drop down pulley sizes with less chance of KR) not more air. And Bill, the last major change to the eaton'* was the abradable wear coating on the rotors. This is what makes the gen v able to move more air over a gen 3.

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11-11-2004, 06:33 PM

#13

DrJay

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Interesting, so according to them its the angles that matter not the size. Doesn't sound like something backyard-Joe could do, eh?

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11-12-2004, 04:53 PM

#14

1994ta

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Maybe its different with an M62 blower, but a friend of mine has an M90 powered Supercoupe. His forum (sccoa.com) talks about *-porting the stock blowers with gains of 40 horse for about 300 bucks from a machine shop.