Technical Eaton supercharger conversion to top carb mount

Well, it's had over 3000 views, and it's a featured thread. And I'm reading it now.

 

It is small for a V8, not looking to make a huge HP gain.

 

It may slip I had it running and brought it up to about 4800 rpm didn't slip then, but like I say it might

 

I like the set up. Simple and even with just a few pounds of boost it will make it perform stronger. Exhaust sound will have a sharp crack. Nice and different.

Joe

 

If the shaft is parallel to the crack...lol..

 

Gimme back my C and take your N and leave me alone

 

Is it as simple as taking a few thousands off the OD of the rotors? I been thinking about putting the m90 I have on my Merc 6cyl but how I mount it may need it to be "wet"..

 

wasn't offended. Just clarifying something that we should always be aware of. If you give half the information you leave lots of room for someone to make drastic mistakes.

@seb fontana , I haven't done one of the eaton units and doubt that I will as I am no longer situated in a machine shop. But it could be as easy as trimming the rotor if it has rotors. It seems like it has helices, which is the glory of the modern blower. They make more boost at less revs so you can really under drive them, less parasitic loss.

It could be a matter if just changing the strips if it is stripped, to give yourself the proper clearance, or it could entail machining the case or trimming the helices. It is more a matter of finding references to proper setup. That may not be easy information to find as these were never meant to be wet.

Perhaps the OP will share some incites.

 

I have a 97 Buick what blower do I have?

 

Check the latest Street Rodder magazine. A inline 6 with an Eaton. Simple, and well done

 

Ford flathead v8 60hp.

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@porknbeaner seems like your clearance difference could be found in using a coated vs uncoated rotor? Looks like they made that change around the same time they went to a sealed bearing that would work with a wet set up.

Also keep in mind that they are a roots style, not a whipple style if that makes any difference.

Hopefully one of the people actually running one of these can fill in the gaps on what they actually did to make it work wet

 

The ones that are flipped and moded to draw thru with carb on top; how do you set the oil level in the front snout?

 

When I flipped my Eaton I redrilled the case so that the snout went back on the right way up so the fill port for teh oil is in the usual orientation.

 

Can that be done with an M90 3rd generation from a Ford 3.8 V6 [I think] ? If I do that then the air flow will be in the wrong direction? Snout is on the right stock [in from back bottom/out at top] so flipping the blower the snout has to be on the left for in at top/out at bottom..I think...

 

I flipped the blower to get the base of the blower body to be the top as this was the right size for the 4 barrel carb to twin 2 barrel converter I wanted to use. The blower is running the right direction , just with the main case assembled 180 degrees around. I reworked what was the top of the blower case to make the narrowest foot print I could to easily bolt up to the flat head motor.
Hope that is a little clearer.

 

I understand what you did but in my M90 it can be flipped but the snout must stay with the case, up side down too..Keeping the snout in left hand side only works of it originally was on left side, mine is on right side..

 

Not a problem. Unbolt the snout, remove the rotors, On mine I had to then redrill and ream the holes for the locating dowels . Flip the case, install the rotors the right way up for the new orientation and then refit the snout. As you redrilled the locating dowels the snout will be back on the same side it came off even though you flipped the case.

 

Finally got mine! $50 score

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Got lucky and found this old sharp 2x2 intake that already had the carb flanges milled flat today.

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Added a couple updates to the supercharger. Nothing too recent. I have to make a decision on pulleys then have the top ribs milled flat so I can bolt on the carb plate!

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Nice!

 

Not mine