so is there a better blower option out there (direct replacement) mayb

 

from google search on Eaton roots supercharger

"... most positive displacement schemes compress the air simply by shoving it into the intake manifold. As a chamber of not-yet-pressurized air is opened to a manifold of already-pressurized air, air first rushes from the manifold into the chamber, before being shoved back out into the manifold. Thus, much of the air is pumped twice, and it goes past the edges of the supercharger exit three times. The resulting turbulence heats the air, reducing compressor efficiency. As one might suspect, streamlining of compressor inlets and outlets becomes very important."

 

JLM, AWESOME quote....thanks :smile:. So, it is correct to think that opening up/reducing resistance to flow out should be pursued too, right? I love my M7 blower and believe that it's quite the piece, simply because it opens up the output side. It actually SOUNDS like it breathes easier when spooling. I remember noting that the first time I drove with it... it sounded breathless and _smooth_. It's hard to quantify that... but just wait til you hear a ported blower, it sounds sweet :smile:!

 

I don't know anything but I bet on M7 to come up something different/better

 

My interpretation is that the text below agrees with what I suggested above about the triangle's intent is to seal the outlet so that only one volume of air is passing through at a time. The way the other blower is ported is allowing compressed air to escape back into the volume in queue, as the blower's edge is no longer sealing that volume from the intake manifold.

 

at the risk of chewing cabbage twice...a too large output can re-circulate already pressurized manifold air; not a good thing. the little triangular holes do the same thing.

 

so....bottom line do these mods work or not? if so what are the gains? please

 

Speaking of the little side openings. How in the world do they allow for quieter operation? It seems a little counter intuitive to me.

If an aural sensation is indicative of the SC doing its job; the Endyn version has certainly clocked in for the day.

 

The little side ports allow some pressure to leak backwards into the volume of air up next to push through the triangular discharge port. The pre pressurized air then gets pumped through the triangle at a pressure thats closer to the manifold pressure vs the big pressure difference a well sealed, well timed blower with the ports sealed off can see.

The slots alllow a gentler (quieter) transition at the expense of doing work twice.

 

=0)

 

reading material:

http://www.capa.com.au/library_vortech_testing.htm

 

.

 

I do too .

 

You have PM!

 

havn't gotten anything...

 

wuz ur box full mayb....

 

Re-sent but still in my "sent-items" list!

 

found this bit on mini2: one user got 19psi with the stock blower but boost dropped to 13.4 with the M7; put the stock back on and 19psi again 19% pullies all cases.) Now before you get twisted, there is the argument that it is the amount of O2 that matters, not the psi, although they mey be related, depending on temp. my rig has seen 19% with the Endyn blower, but I do have high IAT.

http://www.mini2.com/forum/showthrea...=102066&page=3

 

i've been doing a little more research, and i've seen a few pictures of factory m45 and m62 supercharger with an outlet port very similar to the M7 setup. Maybe thats where they got the idea? I'll try to find some good pictures.

 

where did u spot this?

 

deltas for a ported SC on a Ford V8...

http://www.modularfords.com/forums/2...=Ported+Blower

FWIW
Matt