JonEQuest

Am I crazy to think that I can't plumb in my throttle body (or another one that will work in it's place) to a supercharger like this new one for $400 lousy bucks. Make some custom brackets to hold it on and add some different pulleys to the car to run the belts and make a flat aluminum plate bolt to the bottom and blow it into the motor? It would be custom mounts but is it possible? It seems like you could get the same bang as the atkins kits for a fraction of the price if you fabbed some brackets and bought a common SC like the one for the gm 3800 or the ford 3.8 supercoupes that are a dime a dozen on e-bay already.

Well???.............Constructive responses only, I don't want to hear from the negative flamers or the over eager to prove they are a genius types.

John

Novacaine

Pulleys were one of my concerns cause almost all of the superchargers I have seen use serpentine belts not V but there is a place online that sells 6-rib for the crank, water pump, and alternator originally ment to not slip, but if you put a longer belt I am guessing you could tack a supercharger on that belt too. found it searching the forum for pulleys. only problem is the air pump but I guess they mention they are working on adding that part. or you could add something to fix that problem on the mounting plate you are making

http://www.revolutionrotary.com/pulleys.php

Novacaine

intercooling might be a good idea if you are planning on boosting it past like 6 psi cause one ping and you are toast. water injection seemed like a cool alternative to me and seemed to cost less and you could run it on the wiper fluid as long as it was methanol alcohol in it. more as a safety precaution so even if it dies you aren't definately gonna blow your engine.

I guess some colder spark plugs too have been suggested but I am not sure on that

Novacaine

again I haven't done any of this to my car so take them as suggestions. If I have said some **** that was totally wrong please correct me cause better to find out now than later

mazdaspeed7

John, what kind of mods do you have, and what are your goals, hp wise with this? Ive done a lot of research into the Eaton blowers, and found the M90(pic in your first post), to be barely adequate for a n/a with more than just some bolt ons. You might want to consider the M112 off a Lightning if you have any porting, or want to see more than 6-7 psi of boost with severly affecting the life of the SC by going past its rated redline.

BDoty311

Really? The Lightning blower is better suited for it?

I did some research on using the GTP blower, Im sure you could get it to work, but I simply dont have the time to fabricate it. And I dont think my n/a drivetrain would be able to hold up with the power I would plan on making.

mazdaspeed7

The blower off the 3.8L GM motors is a M90. Theres compressor maps at www.eatonautomotive.com as well as maps for the M112(and the M45 and M62, both of which are too small for a rotary).

If you take a rough guess at your VE(theres enough info to get relatively close with your mods), you can plug it into a formula to calculate how many cfm your motor is pulling at a given rpm.

(VE * displacement, 80 c.i. * rpm)/1728

(if I messed up that formula, please correct me, that was off the top of my head.)

Generally speaking, a stock port will have around 80-90% VE, and a street port will be a little higher (at the torque peak), and full bridge and PP motors can be 120-130%. All of this is depending on other mods, and is just a rough generalization. Also, the VE follows the torque curve, and peaks with the torque.

BDoty311

All bow down to Mazdaspeed7, with his numbers and formulas for everything.

ACTION RT

My friend Ian has already started on this exact project.

He is a machinest so he made all his custom pulleys, mounting brackets etc. Last time i spoke to him he was starting to mold a new intake manifold system.

I posted pics on the other supercharger thread

KiyoKix

I've thought of this also, but when I did I thought it would be much easier (not to say that it's gonna be easy, but it won't be the hardest thing in the world) if you use one of the centrifugal (a.k.a snail blowers) blowers. You could pipe it in like a turbo if you used that, of course you know there will be a difference if you use one. All things have their strenghts and the easiest way isn't always the best, but for me right now I'm think that's the best way to do it.

If I can help you out though I'd be MORE than happy .

V8kilr

dont know if this has been asked yet but, where would you put it?

mazdaspeed7

Centrifugal blowers are pathetic on motors with high redlines and wide powerbands. How about 10 hp gain at 2000 rpm and a 100 hp gain at the rev limiter? Put simply, they dont work well in the real world.