M-90 3.0; it begins now.

[big_P]

Have: Eaton M-90 Supercharger, with 110k on it. Rising Rate Fuel Pressure Regulator. Crank underdrive pulley to control boost. 3.0 Plenum CNC'd flat on the top. A/F gauge.

En Route to my house: Blower "snout", throttle body, sensors, and sensor pigtails.

Need: +20%(?)Injectors, 255lph inline fuel pump. Supercharger gaskets. Big, long serpentine belt. Custom blockoff plate for 3.0 Throttle body.


Okay. So.

I have this all planned. Cut a hole in the plenum, fab some brackets for the blower, blockoff the 3.0 Throttle body, wire in the Ford AIS and TPS (Both by Holley and 5v outputs).

The big question: There is no boost bypass, like the one used on the 3.8 SuperCoupe that the blower came from. IE, the motor will be under boost at all times. Maybe not at idle, but the M-90 pushes A LOT of air. The 3.0 I have has been rebuilt (minus pistons). 170psi in every cylinder. Ive got the speed bug again, I'm bored with the 3.0 543 project I just finished on my Voyager.

Can the 3.0 handle the stress of that? I know it's a lot to ask it to be reliable, but that's my goal and I think it's possible.


Thank you all.

[NA2ndgen]

You need Wink for this stuff.

All I can say is, WOW.

[speedyshelby16]

Can't you just put the boost bypass where the old trottle body was?

[Ondonti]

You are doing suck through right? who cares :P it can only ush as much air as you allow it to draw in. You will probably get a lot of part throttle boost though....

[Boogieman142]

+1 when the throttle snaps closed it cannot get very much air so no boost, however that also puts a strain on the blower. What i was going to do with mine is when the throttle snaps shut, the air is drawn directly into the engine instead of thru the blower, then the blower will just freewheel, kinda same principle of a bov, to save the air pump.

[Formula350Scott]

My friend and i just put an m90 on his 3.0 daytona and it pumps A LOT of air even at idle. It still has 20inhg of vacuum though so no air is sneaking through the TB blade. It makes no boost even revving it up. Needs to be under load. It revs twice as fast as before and i thought the 3.0s revved good anyway. What we came up with for the bypass valve is a crushed talon blow off valve so its open a little at idle, closes slightly for lower than max boost at WOT and open wide for boost release. Its got a lot of power. Be prepared for some noise though. It sounds like a ford power steering pump X 10. Its LOUD!

[Ondonti]

pics!!

[DustyR/T]

Ditto!

[m90daytona]

why does it only make boost under load?

[Harvii]

Quote:

Originally Posted by Formula350Scott My friend and i just put an m90 on his 3.0 daytona and it pumps A LOT of air even at idle. It still has 20inhg of vacuum though so no air is sneaking through the TB blade. It makes no boost even revving it up. Needs to be under load. It revs twice as fast as before and i thought the 3.0s revved good anyway. What we came up with for the bypass valve is a crushed talon blow off valve so its open a little at idle, closes slightly for lower than max boost at WOT and open wide for boost release. Its got a lot of power. Be prepared for some noise though. It sounds like a ford power steering pump X 10. Its LOUD!

Glad to see more people taking on this project. I also used a 1G DSM BOV for my setup. The whole setup absolutly HOWLS at any RPM and add that noise to the 3in cat back + flowmo muffler and I get alot of attn.

Here's a pic of the setup. BOV is actually right before the TB. Pipe on top is a cold air intake pipe for the blower and the rest of the plumbing is buried down under there. Uses the stock serp belt with the Nick Boers UD crank pulley. Alternator was moved to where the a/c used to sit.

http://harv.f0e.net/engine.jpg

[NA2ndgen]

Is there a smaller less powerful SC that would work on our 3.0L'?

Hope it's OK to ask.

[c2xejk]

Quote:

Originally Posted by m90daytona why does it only make boost under load?

Basically, if it made boost under no load, the RPMs would go shooting through the roof...

What is happening is he never opens the throttle far enough to let the super have enough air to make boost..


Yes there are smaller supers... NA2ndgen, I should give you a ride in DaytonaStein some time... 8psi at 2200 RPM is a lot of fun That will probably get thinking about a turbo setup...

Ed Kelly
www.kmperformance.com

[NA2ndgen]

Yes you really should Ed. I have never been in a boosted 3.0L. I would probably get hooked, become obsessed, start selling everything that ain't nailed down to fund the project, and drive my mate to have me committed.

Sounds like big fun!

[mwinkle353]

Boost bypass can be a simple thing to install in a pull through design. Just weld a peice of tube to your intake below the supercharger's outlet to the motor. Then, on your adapter from the supercharger's inlet to the TB, just weld on another of the same size. Then between the two, just get a BOV that recirculates the "boost" back to the inlet side of the super (behind the TB). A Volvo/Saab unit made by bosch should be enough for your setup.

Keep in mind that GM put a bypass valve on thier setup to reduce the HP required to rotate the supercharger at low load operations. It will not increase performance in any way. But it will aide in prolonging your supercharger internal seals.



Wink

[mwinkle353]

Quote:

Originally Posted by m90daytona why does it only make boost under load?

The supercharger will only pump what air it can ingest. And when the TB is closed, it's creating a vacuum. Hense, it's only pumping about 10% of the air due to the density of the air in the system.