Power from Eaton M90

[supercharged3.0]

Hello!
I am new here and i have some questions about my supercharger M90.
Basically, i did some custom work on my car. I have 1991 Ford Probe with 3.0 V6 engine and i put supercharger M90 from T-bird.
I can see some 5-7 PSI of boost with the stock M90 pulley on. I just wondering, what can be done to make that SC to making more boost, more power?

What about porting?
Pulleys?
How much is the MAXIMUM power of M90?
Any info, i will be glad

 

[CodyCobra]

I belive my Roushcharger was an Eaton m90. I used the BBR pulley upgrade kit and made aroun 8-9psi. At that level however, heat became a huge issue and the blower lost efficiency. I really wouldnt push it any farther than 10psi unless you have cooling upgrades.

 

[Ryan]

they made about 12-14lbs stock on the SCs.

 

[95SC]

You can find alot of info here .Here is what M90 at 20 + psi on v6 3.8 can do Link

 

[supercharged3.0]

You can find alot of info here .Here is what M90 at 20 + psi on v6 3.8 can do Link

WOW!!! 20 PSI??? How?
What you have to do with your SC to get 20 psi? Okay, let's say not 20, maybe 12-15psi?

 

[supercharged3.0]

I belive my Roushcharger was an Eaton m90. I used the BBR pulley upgrade kit and made aroun 8-9psi. At that level however, heat became a huge issue and the blower lost efficiency. I really wouldnt push it any farther than 10psi unless you have cooling upgrades.

what kind of cooling upgrades? Intercooler? I have it.

 

[ColorMatched]

The way to make a roots blower spin faster is the make the wheel that spins it smaller.

AKA smaller pulley

 

[4tun8]

Why do you have a blow off valve?

 

[bigpoppa822]

Why do you have a blow off valve?

Because the M90 on T-Bird SCs has a vacuum activated bypass valve in the stock inlet and return plenums that elminates the need for one. He needs to relieve that pressure somehow.


My Thunderbird SC makes 17psi with a Generation 3 M90 (square inlet port). I hand ported it, put in GTP coated rotors and have a 10% overdrive pulley.

 

[LT1FireChicken]

you tell them big poppa. show em how the cow eat the cabbage.

 

[miguel5671]

hi there

Because the M90 on T-Bird SCs has a vacuum activated bypass valve in the stock inlet and return plenums that elminates the need for one. He needs to relieve that pressure somehow.


My Thunderbird SC makes 17psi with a Generation 3 M90 (square inlet port). I hand ported it, put in GTP coated rotors and have a 10% overdrive pulley.

How did you port your m90? i have a 92 Sc
but i have an extra m90 laying around the house i want to port it and rebuild it
if you could help me out on the porting id be really thankful

 

[Beerdog80]

Might try contacting him directly since that post is nearly 3 years old