I'm only revisiting this because my freshly rebuilt M90 from a GTP is coming tomorrow and i like when you guys flame me.

Anyway i've been doing some research into it and i think it's a pretty feasable option considering i only spent 250 dollars on it and it's not going to take 2750 to fab up adapter plates for the TB and Intake manifold.

Ahh the M90...

Inlet flow of...
425cfm at 10,00rpm
525cfm at 12,000 rpm
and i imagine 630cfm at 14,000 rpm.

Main question is how fast can i spin this blower? 14000rpm? 13,000rpm?

Will the blower eat the gains it will produce over the M62? Probably

Is it too large for our engines? Eh.. People want to spend 3K on a whipple that's the same size as this blower so what's so bad about spending the money and seeing if an M90 can yield closer results for far far less money? A local tuner is going to fab up the adapter plates for me so i will keep you all posted.

 

thought you were in the turbo crowd?

 

good luck

 

It's not goint to work trust me on this one. The supercharger is too tall and with some simple math you'll be able to figure that fact out.

 

14k rpms is the limit on it. It really doesn't flow much more air then the M-62.

 

max psi on the m90?

 

I would like to know more info on this. Someone please chime in.

 

A vendor just did...

 

Dont waste your time or money on it.....

 

not only will it not work, but if he does get it on there somehow, I doubt he sees any significant power increase. keep us informed though cause we could be wrong.

 

I don't want to spend 3K plus on a turbo kit. This little project is cheap and if i end up burning a few hundred it won't be a total loss. I could always just resell the Eaton.

 

I'm just looking for some more evidence.

 

Give me a few weeks. If it doesn't work it doesn't work and we'll all finally have our answer.

All depends on your definition of much more.

M62@14,000 = Let's call it 460cfm
M90@14,000 = Let's call it 625? Maybe more. Eaton's graph's stop before it peak's.

It's a cool little project. If it works.. SWEET.. If not.. No big deal.

 

I wouldnt flame. Its nice to read about something different and its also nice to have proof that something will or will not work. GL onyxd. You need to get some before/after dynos for sure...

 

Say the swap yields 20whp over the M62 at 16psi and costs around 350-400 dollars total. That's a really good bolton for everyone looking for every ounce of power.

 

what pulley size are you gonna run?

 

I think the stocker is a 3.8" and will work my way down from there. I'd really love for this swap to yield like 260-270whp and still have room to max out the blower.

 

Trust me.. M90 is not what you want.. its too big, still only rated to 14.7 psi like the M62, not very efficient..

What you want is a TVS R900 or R1050..

 

Guess you missed the part where i didn't want to spend a lot of money on this project. 500-600 tops

 

i don't think it'll work man but good luck.. not only the size issue but you're not pushing enough more CFM to displace the fact that it'll take more HP to spin.. the M90 is geared toward bigger displacement engines.. as it is the M62 is geared toward 2-3L engines so thats even a little big for the lsj application eatons aren't the most efficient pieces of machinery

if it works though AWESOME since you're not spending much.. least you got a sweat deal on it

 

If it fits, good luck!

 

one way to find out man. test it!

the reason eatons map stops is the fact that it is out of efficiency.

m62 peak eff is 7 psi. this is without the aftercooler.

 

Well the way I see it if you can do your own custom work, you could probably pick up a used M90 blower for cheap and rebuild it for cheaper and have a decent upgrade for your engine for little money. But only granted that it fits.

 

More flow + less RPMs(blower) + less heat - more HP to spin = Less power?

I keep going over the stats on the M62 and M90 and it seems compare stats at similer RPMs rather than flow.

 

You gotta make sure your not losing power from how much HP it takes to spin it. I think if it works it will make a HP gain of some kind because the difference in the HP it takes to spin the blower isnt that significant is it? like maybe 10 HP more? With the added CFM, if the intake manifold can handle that, should create more power with less boost and heat??? All you can do is try it tho right?.