I came across this post on the C4 for sale forum. Its an interesting idea.

http://lasvegas.craigslist.org/pts/1539968890.html

Could someone pull out their A/C compressor and find a way to bolt something like this in it? I'm guessing that you can pick up a cheap M90(They are $100 on ebay) and spin the crap out of it to feed a 350ci for a few pounds. The hardest thing would be to get an output port that changes the manifold output to a tube output, but that wouldn't be that hard to make. Then just the mounting bracket.

Its a very interesting idea that someone could explore for a few hundred bucks and some time this winter. Who's up for it?


interesting M90 info from an ebay seller

http://cgi.ebay.com/ebaymotors/3-8-G...item27ae3a3d7c

 

Brian, I know several years ago, Alvin at pcmforless put one on a LT1 F body that he had. There used to be some pictures of it on the internet. Not sure they are still there though.

 

I thought about remote driving one like that as well.

If I go roots, that's probably how I'd to it.

I've got the pics on the one mounted via cutting to top off, I'll post them up later.

 

Was that the one that was top mounted like you normally see them? If so I seem to recall those pics.

I really like the idea of side mounting the blower, you can keep your normal intake even the throttle body. You would just have to figure out the bypass valve which shouldn't be a problem. Set it up just like a centrifical blower but you get instant boost. You can even put an intercooler on it.

 

It seems to me he cut a LT1 intake down to mount it on top. Said it cleared the f body hood, but had no idea if it would clear the c4 hood. So yes, I believe it was top mounted.
BTW, good to see you back on here posting ideas, etc!!

 

Man that is an awesome write up.
I thought about those on my other car years ago, because they were so cheap and so many on ebay.

I never thought it was so possible though.

Thanks for that posting

 

here' the F-body with an eaton blown LT1

http://www.corneltechweb.com/superchargerweb.htm

and the thread about it

http://forums.corvetteforum.com/c4-f...er-on-lt1.html

 

BrianCunningham is always on top of these positive displacement blower threads.

I even suggested the idea of a side mount blower several months ago, but my threads dont seem to envoke too much excitement! lol...

The 90 will be too small, and would heat soak like crazy if driven too hard.

The miata guys are using an MP62, and even those guys are interested in trying out the Mp90 head units for radical builds. Spinning the mp62 in those small applications leads to serious heat soak. The discharge air-temp is extremely high on these roots-blowers.

I would be more interested in seeing a positive displacement twin-screw (whipple, kenne-bell) head unit used in a project like this.

I spoke with Cornell a few times over email in a duration of 6-months waiting to hear about the latest information on an intake manifold that he was developing (as a side project). Haven't heard anything from him lately though.

He used a supercharger head unit pulled off a production jaguar, in which case he felt had a restricted intake and outlet.

My concept of the side mount unit would allow the end user to intigrate a form of intercooler (be it air-to-air OR air-to-water), on top of the now popular water injection examples. I think I even asked to see if there would be interested parties for me to try and tackle the project myself (i.e. employ the talents of the local CAD-design, Casting facilities, and appropriate fluid-dynamic's engineers). Of course, nothing really came of it either.

*edit*

My placement of the supercharger head-unit would be similar to the placement of the intercoolers of the Callaway cars (directly over the exhaust manifolds)>

keep in mind, the throttle body will have to be placed in-front of the supercharger (so the blowers intake track). Of course, this isn't the only way to do it.

 

Maybe you should be looking into an Eaton M112. They will handle the over spin of added boost for a very long time upwards of 100k miles. They will also support the larger displacement motor without cavitation. The eaton m112 is only going for about 300 to 500 dollars so it is also cost effective. Stegmeier is a company that does blower builds and porting. It is an interesting build you guys are thinking of and would make a mean street car. If you are going to use a Ford factory eaton blower it will need a steel coupler in the front drive assembly because the plastic one will go bad quickly when over spun secondly it will need to have the rotors stripped because the teflon coating they have on them will begin to flake off third it will help airflow to port the case. you might also look into putting a phenolic spacer between the blower and whatever metal it will be touching (bolted to) it will not stop the heat soak but will drastically slow it down since phenolic resin insulates well. The blowers aren't what heat soaks the motor the motor heat soaks the blower through conduction. Anyone needing an m112 may also note that they come in a top and side feed design. I have a lot of info on these blowers and blown motors in general if I can help in any way let me know.

 

I know ware this is. If anyone wants to buy...

 

Idealy the M112 would be much better than the M90. But I guess for the proof of concept and what not I thought cheaper was better. But if your going to do it, doing it once is definately the best approach.

I'm not sure the phenolic spacers are needed. If the blow is not mounted to the top of the engine and off of the accessory brackets some how the heat transfer will be fairly minimal from conduction.

Finding the right placement and mounting it are going to be the big challanges. Does anybody have any ideas on this. The normal blowers are bolted to the intake but an outlet plate would have to be used there for the outlet air. Any easy ideas on how to mount the unit, and where around the engine. Perhaps using the longer bolts around the snout and putting a mounting bracket between the bolts and the shout and some thing on the other side for the TB end.




Here's a honda guy that did it with an M62. Scroll about half way down for the good pictures.
http://www.honda-tech.com/showthread...997913&page=17

And here's some good M90 vs M112 data
http://www.lextreme.com/m112.html

 

buddy of mine has a really nice m112 off of his 04 cobra I can maybe chew him down to the 300-400 dollar range. It has already been rebuilt, ported, and had the rotors stripped...

 

I believe it's called an MP112... not that it's important. the older blowers (less efficent) are the m60, m90, etc... the newer generation had the "p" in the designation.

Anyway, the cobra supercharger off of an 03'-04' will not work for this application. That particular supercharger (along will all other superchargers with a specified casting-jaguars, GM's, etc) are intended for a specialized application. the 03'-04' cobra has the outlet facing straight down with a lip that mounts to the surface, in what would be the housing for the heat-exchanger.

this is why most aftermarket vendors use a universal version of a given supercharger... mp62, mp90, mp112, TVS-series units... It allows the vendor to more-easily design a kit around a universal head-unit.

 

Is there any reason why it wouldn't work? I could see where vendors wouldn't want to because they would want to use the generic mass produced version. But for a 1 off application why not. You would have to custom build the outlet piece anyways. Its just a different bolt pattern for the flange.

That is unless they make outlet ports for these that can be found easily and cheaply, but I guess I haven't really seen those.

 

actually the mp and the m112 are the same thing. if you get onto Eatons website there are no mp part numbers... An mp would be a magnum powers blower, it is an eaton design but much improved airflow. Or a Magnuson AKA Magnacharger model 112. http://www.eaton.com/EatonCom/Produc...M112/CT_127056 However there are different submodels of the m112.

 

here is how i was gona do mine. changed my mind now im gona go with 383 stroker.

 

for the idea of mounting off the side, I saw this done years ago with 2 of them. I think and F-body guy did it a few years after this one.



few more pics here
http://www.streetfire.net/photo/351W...RS_1614681.htm

here is a malibu with tpi I dug up

 

it amazes me....EVERY TIME...

I even think of something and pop...there she goes. When I began looking at seriously buying a Corvette last year, this was my plan. I know RMCDaniels, and posted in his development thread many times (the honda guy above that did it). I had several supercharged Civics and had spare Jackson units. I'd always considered using Eatons from GM cars, but they spun the opposite direction from Honda motors of that era. When I considered buying a Corvette, I immediately decided to go this route.

So, my plan is a little exposed, but I'm not going to detail what I'm going to do any further. Just wanted to say, coming in here this is what I planned on doing...guess someone read my mind here. Not sure if anyone is serious about moving forward, but I certainly am.

 

keep us posted!

 

I intend to do a build thread, but this was my little secret...lol. Like I said, I'm not spelling out exactly what the plan is yet, but winter will be go time. I want to enjoy the car over the summer.