Thread: M90 flow?

The more crap I read from you the more you sound like some nerd that over analizes everything and is book smart but cant do d1ck with a wrench in your hand. Come back to us when your precious TVS swap is done. All these #'s dont mean crap to me unless you start posting dyno 1/4 mile times trap speeds or other real world results. Point blank no 2 engines will do the exact same thing. I could care less what the science is behind it Dexter until you post what the real world results are. Besides a decent tune vs a horrible tune could screw all your math to begin with so whats the point? Or you could start to factor in air temp, altitude, fuel type ect. It all means nothing until results happen.

Originally Posted by 98GrandPrixIraqVet

The more crap I read from you the more you sound like some nerd that over analizes everything and is book smart but cant do d1ck with a wrench in your hand. Come back to us when your precious TVS swap is done. All these #'s dont mean crap to me unless you start posting dyno 1/4 mile times trap speeds or other real world results. Point blank no 2 engines will do the exact same thing. I could care less what the science is behind it Dexter until you post what the real world results are. Besides a decent tune vs a horrible tune could screw all your math to begin with so whats the point? Or you could start to factor in air temp, altitude, fuel type ect. It all means nothing until results happen.

This is kind of unnecessary... anyway I'm no nerd that sits home and crunches numbers all day, but I do my homework before picking out mods.

You want dyno numbers and track times?

301whp on 93 pump in a cam only L32
12's full weight on 93 pump with all season tires in my Regal.

Anyway all this bashing on me and you've still yet to answer. I said ballpark answers are fine, I just want people to think for themselves and come up with the right path to the answer.

Like I said, the M90 does not flow 90ci/rev like so many people here will tell you.

My point is simply results or no one cares.

Originally Posted by 98GrandPrixIraqVet

My point is simply results or no one cares.

This is exactly the type of mentality that I'm trying to change. Too many people cookie cutter things into place. You should know WHY you're doing something... and not just THINK you know why you're doing it.

Can you please just try and answer my question?

Originally Posted by 99prixgt

what the hell kind of thread is this

One which took the wrong direction for "enlightenment".

Originally Posted by redlinepontiac

snowflake is trying to enlighten us, but people gauge mods by track times, WHP numbers.

Originally Posted by SnowFlake

You want dyno numbers and track times?

301whp on 93 pump in a cam only L32
12's full weight on 93 pump with all season tires in my Regal.

Anyway all this bashing on me and you've still yet to answer. I said ballpark answers are fine, I just want people to think for themselves and come up with the right path to the answer.

Like I said, the M90 does not flow 90ci/rev like so many people here will tell you.

Wanna take a crack at it? TheOtherNick took a shot at it... only person here to do so yet...

Originally Posted by redlinepontiac

32ci per rev?

No... but if you actually put thought into that answer and didn't just arbitrarily post numbers then you're getting closer.

It's cool man... and I'm not saying everyone needs to be a math major. I'm just trying to change people's awareness. Look how this thread started... I had people telling me its 90ci and Ehow said so.

That's how WAYYYY too many people think about EVERYTHING. You can't do that! You have to understand things from a fundamental standpoint and you'll find life much less confusing.

I am using the whole m90 thing because if people took this thread seriously, about 90% of the members here would just say, 90ci/rev, you're a moron. But it's so blatantly obvious that it's NOT 90ci/rev. This is inspired by the TVS swap that I'm doing, and the whole GenIII vs GenV debate... too many people just read **** and regurgitate it, spreading the misinformation even more.

To spin an m90 to 14 000 rpm you'll need a drive ratio of 14/6= 2.3

Which is outside of the m90's efficiency range. (even eaton recommends a larger/better power adder at this point)

Thus knowing how much it flows would only be beneficial if you desired to calculate the precise theoretical improvement from changing power adders.

And bench building motors only works when you know everything from your cylinder head flow numbers to the volumetric efficiency of your motor.

Does it make sense why this thread was a terrible approach to your desired effect?

From the following chart, I'd estimate to be around 690 CFM.

http://www.eaton.com/ecm/groups/publ.../ct_128485.gif

Originally Posted by matt5112

To spin an m90 to 14 000 rpm you'll need a drive ratio of 14/6= 2.3

Which is outside of the m90's efficiency range. (even eaton recommends a larger/better power adder at this point)

Thus knowing how much it flows would only be beneficial if you desired to calculate the precise theoretical improvement from changing power adders.

And bench building motors only works when you know everything from your cylinder head flow numbers to the volumetric efficiency of your motor.

Does it make sense why this thread was a terrible approach to your desired effect?

From the following chart, I'd estimate to be around 690 CFM.

http://www.eaton.com/ecm/groups/publ.../ct_128485.gif

Not building a motor, but I am changing power adders. You can hit 14,000 rpm on the blower with a 3.1 or 3.2 pulley depending how high you rev your engine... people take m90s WAY faster than that.

Anyway I am achieving exactly what I set out to do... awareness.

Originally Posted by JoRoW99

Its either way more because as the blower spins it heats the air and thus expands it, Or it is much less because when it turns it compresses it lowering the volume.

Kinda sorta, but you're thinking... Think of it more simply though. We have numbers here to work off of.

Go to 12,000 rpm. There are posted CFM numbers all over the internet. 10psi and 12,000 rpm gives an inlet flow of 525CFM.

What's 525CFM in Cubic Inches if the blower turns 12,000 revs/min?

Originally Posted by JoRoW99

75.6?

We have a winner!