armcclure

iTrader: (2)

Hit the sharp edges with scotch brite by hand, let it eat. To heck with the coating; run more meth.

Spawne32

iTrader: (1)

Wasnt there a sticky thread where eaton actually made a statement regarding the silencer holes being for sound only?

riceburner

iTrader: (66)

There was. Many m90 platform people think otherwise. Im not hoping for anything though i believe its only for sound.

I went through THREE transmissions in my 3.1 monte. Have no idea... got the f rid of it at 88000 miles

riceburner

iTrader: (66)

Mercedes e55

Sorry to stir up so much **** everyone

Bluelightning

iTrader: (8)

"The two oval slots on the output plate are air leakage ports. Their only purpose is to decrease operational noise from the blower. Arnie, from Eaton Corp., explains their function like this, "When you stomp on the gas, the boost shoots up and the air flow goes supersonic. The air then slams back into the output plate and through the leakage slots, which reduces the hammering of the air into the housing causing less noise. The OEM can not have such loud NVH, that’s why we put them in the housing. The 2 small ports are not there to feed air, only to reduce noise." Basically, for the best flow and most efficiency, these ports can be blocked off, making the outlet port (triangle slot) the only port on the outlet plate of the housing. Closing these ports will not increase IAT's; however, it will make the supercharger much louder when in boost. As an example, aftermarket supercharger companies, such as Harrop, Roush and Magnuson do not use these slots in their blowers. It should be re-stated, that you should consult professionals regarding closing these ports; and do not, for any reason, plug them with JB Weld. Improper closure could eventually lead to pieces coming apart and loose debris destroying the rotors and housing. Opening up these ports will only have a negative effect on efficiency. Do not port them."

Spawne32

iTrader: (1)

Hmm so it is probable that it could increase efficiency since they tell you to NOT open the silencer ports anymore then they already are.

Bluelightning

iTrader: (8)

Lol like I said, minimal at best. If it worked performance wise everyone would do it. This blower has been on the Cobalt for 9 years. Not much new to explore.

Buy arms ported blower case if you want a power increase.

andrewcarr1993

iTrader: (5)

Didn't rice say he used JB Weld or something of the likes to fill them...

riceburner

iTrader: (66)

Think it was quicksteel and we beveled the ports correctly before filling. All will be well, **** what you heard

Staged07SS

iTrader: (25)

This^

Pluging the holes is a noise maker mod rice.... You need to step back and really go over your build.

You are going in so many directions thinking you might solve something that hasnt been done or tried before to make power.

riceburner

iTrader: (66)

I didn't say i would make power.

overall i think everything is sound, sand perhaps the pan-vac. this was all months in the making. one good power maker will be the balance shaft delete which i am really excited about

BlackielawlessSS

iTrader: (1)

Take lots of pics, I want to do this!

mrbelvedere

iTrader: (3)

direct quotes on a message board pfffft big deal most of the time the books are done to keep things over safe and to cover the companys ass when problems arise then when it comes to real world ops the part is more robust and will still perform well beyond when things are not 100% with the part there have been many m62s and a couple of tvs blowers with a well worse off rotor pack then this and are still performing well within the required performance thresh hold

riceburner

iTrader: (66)

Its already been done and the blowers on. Its simple though, just have the openings wider on the inside of the rotor casing, tapering off into smaller openings on the outside.

Put tape over the inside side of the holes

Fill with quicksteel (used high temp at some crazy high pressure tolerance)

Spread a little extra around the hole for good measure

Let dry, peel off tape,sand, good to go

riceburner

iTrader: (66)

And yeah guys the rotors are bad but not terrible. It was caused by metal flakes from the injen intake scraping a hole into itself in the fender hole it goes through, and then whatever debris got sucked into that hole.

It sucks because you know it would only he scraping the hole into the intake while driving, so pretty much all the metal shavings had to have been sucked in

Its a strong blower and motor! Yolo!

mrbelvedere

iTrader: (3)

Yolo Yolo Yolo Yolo Yolo Yolo Yolo Yolo Yolo Yolo Yolo Yolo Let it eat Rice Let it eat Rice Let it eat Rice Let it eat Rice

riceburner

iTrader: (66)

ps mrb you know i just say yolo to spite yolo'er's right? like you are mocking me mocking them lol. i don't take yolo seriously. though i do believe you only live once

armcclure

iTrader: (2)

So does your motor

riceburner

iTrader: (66)

so does yours?

sorry but what are you all getting at? lol i feel like people are getting hotsie totsie here

Spawne32

iTrader: (1)

I saw that blower case in the classifieds, i dont believe for a minute there's any sort of power increase with that goofy looking design. I also find it ironic that he recommended a pulley size change in order to take full advantage of the modification. I wish eaton would release more information about how the roots blower works so that people could understand the reason for that V shaped outlet in relation to the timing of the rotors spinning so they wouldnt fall victim to these people selling these goofy shaped housings. Magnuson already does their own aftermarket blower cases for certain applications and you will notice they all maintain the same V shape outlet (minus the silencer ports) and it is only a tad bit wider.

TStone

iTrader: (2)

Lol at you.

armcclure

iTrader: (2)

I recommended a pulley drop to see the most gains because this port brings back lost effeciency, the smaller you go the more % gain.
Dyno results of back to back testing.
If you want to talk **** in the face of proof, **** off.


You apparently don't know me that well, or that before I do or talk about something, I make sure I know what I'm talking about.

If you want to carry on looking like an ignorant ass, suit yourself.


And Adam, that wasn't a shot at you directly. More just saying, you get one shot per rebuild, might as well make sure it's done right.

Spawne32

iTrader: (1)

We are having a debate about this stuff, I didn't tell you to **** off did I? The dyno graph you posted doesn't look like what I would expect for your modification, it looks like the graph of a person who just did a pulley drop. There is a consistent gain on every point of the graph from low end to high end, we already know that porting the supercharger outlet causes it to lose low end efficiency so why would you see a hp and torque gain @ 2000rpm, that to me tells me that the blower speed has increased over the last dyno graph. That's besides the point though. What exactly did you use to come up with that specific design that makes it more efficient then the way eaton designed it? Did you test the design in a computational fluid dynamic program? Did you test the supercharger efficiency afterwards on a flow bench to measure the changes to know that that particular design was more efficient? All I ask is that you explain your design a little better and then maybe ill be a bit less skeptical, is that too much to ask?

armcclure

iTrader: (2)

I did explain it. And for your information, as was stated in the fs thread, both those pulls are the exact same pulley. Not just the same size. The exact same pulley.

armcclure

iTrader: (2)

But to reiterate, the widest split barely precedes the leading rotor lobe closing point. The steps break up the pulses for smoother airflow. It's not that difficult.
After being done by hand, it was digitized with a cmm, angles and shape made symmetrical, then done on a cnc.

As I said elsewhere, "it's not some back shelf dremel job"