my n/a supercharging project complete
 

I dont have much time right now but ill give you a short overview.
Well i didnt really want to spend $3800 on atkin's efi supercharging kit and i didnt really feel like swaping in a turbo engine in considering my engine runs very strong. Plus everybody has a turbocharged rotary, not many have a supercharged one. I figured that i could try and supercharge it as a project and if it didnt work out or if the engine died i could put a low compression engine in.
I bought an eaton m90 off of ebay for $150, that is very nice and tight, $50 for a machined v-belt pulley for the supercharger, $40 for all the piping, and $50 for a bypass valve and a blowoff valve, My total expence for this entire project was $290:D . The bracket i fabbed is very very strong and very impressive, the bracket is welded to the engine mounting pad. It is as one with the engine in its movements. I piped the s/c just like a turbo, with a bypass valve and a blow off valve, in line between the s/c and the throttle body.
I tried to calculate the pulley size i would need to have 6psi and it was 3.5". I ended up with 7-8psi, and the supercharger is only running at 70% of its full capacity.
Lets put it this way i have 6psi by 1500 rpm. I didnt really have to worry about predetination because i have a safc, I havnt felt or heard one ping and i am running 89octane, and i only have the fuel truned up slightly.
It is now a frieking beast off the line, and pulls like hell compared to n/a. Here are some pics of everthing as of two weeks ago, I dont have any of the finished product. Ill get some pics of it all done on here tomorrow. Let me know what you all think

cool man...I'm still waiting for that Atkins kit that's supposed to be coming out soon for n/a's...hope I won't have to sell one of my kids to pay for it!...

another

:eek: fuckin ay!

Nice, care to post specs/pictures on those brackets?

are you running a intercooler?? what did you fab the bracket out of??

any dyno #'s?
even butt dyno
are you runnin an s4 or s5?
does the boost hold to redline?

another

Now don't flame me, I don't know shit abotu superchargers.

I'm assuming the hole at the top is the outlet (i.e. supercharged air) If you connect it straight to the TB (w/o intercooler) how do you fit the AFM?

As others have asked...are you running an intercooler? Pics with pipe laid out?

I am now very strongly considering this as a project! How the hell did you land a supercharger that cheap!?

-Jon

He has a S5. Easy way to tell: look at the TPS. S5 has narrow and fullrange TPS sensors.

looks pretty sweet so far.

These pics arent very up to date at all, you cant tell much from them, I ll get some good ones up tomorrow of everything finished.

I should have taken a picture of the bracket by itself but the camera was at my highschool and i wanted to get it on the car. The plate the s/c sits on is 1/4' steel, that plate then sits on two supporting towers that are made from 2" square tubing, one in front one in back. those towers are then welded to a piece of 3/8" steel in the form of like a z, it is really hard to expalain i just found it at my place, ( i live on a large farm and we have tons of steel) that peice is then welded to the round engine pad. I really should have taken a picture of it out of the car so you guys could see how well it is made. it is very very rigid. I am a pertty damn good welder, so i MIG welded everthing, I didnt intercool it because i dont think i need it with the low boost level. You would all be impressed with how frieking hard it pulls , especially down low. I live in the boonies of ND so there are no local dynos, But i am going to have it dyno tuned within 6 months. Ill post the noumbers when i have them. but i would say i would have to be running at least 180 rwhp. 7psi on high compression dont you think i should be perty close to that

the plates i made for the supercharger ports are made from 1/4" steel with 2" pipe studs welded in.

wow, how did u pull that off?

The date is april 1.

Except for the pics... hmm... dunno.

Nice!

If someone really did pull this off for $290 they are my new hero.

We should meet up someday, where in ND?

wicked. i wonder what the powergain is like.
heya. isnt that the same supercharger that are on thuderbird SC's?

i was looking at getting a sc before i got my fc :) they hall pertty good too :)

sc and fc. HAa aa! .... erm.

yes, you are my new hero as well. and to get a supercharger that cheap, sure makes me want to find one and supercharge my N/A. don't have the dough for a turbo at the moment but could probably muster up 700-1000 bucks within the next 4 months.

mad props on your success man. first with icemark's s5 manifold on the s4 block then a cheaper way to make the rotary faster (s/c). although i have an s4, shouldn't be that much different.

Eaton superchargers are used on fords, especially the TBs

EDIT: btw, eatons go super cheap on ebay... $202 right now @ 13 hours left: http://cgi.ebay.com/ebaymotors/ws/eB...tem=2469973894

EDIT2: $211 @ 20 hours: http://cgi.ebay.com/ebaymotors/ws/eB...tem=2470460564

Edit3: $83 @ 23 hours http://cgi.ebay.com/ebaymotors/ws/eB...tem=2470078136

88IntegraLS we think alike...but I still have my fingers crossed. It's just so crazy it's believable...let us pray.

Man thats incredible. If u have time..how about a write up? :D

for some reason, reminds me, hows the paint job and front end ever finish out?

A guy in my club is responsible for this...

http://members.aol.com/ageofglow/aaronssc.jpg

I still haven't gotten a good look at it, and it's still got some bugs. Unfortunately he used the M42 instead of an M90, so his motor will be... choked.

Thats REALLY awesome man, id love more information on how you did it. Write up write up! Nice work.

sc after the tb... interesting. Is it mounted directly to the UIM?

keep this alive
 

I hope this isn't an april fools joke. Please if this isn't a joke zbrown follow up. You could be the pioneer of a small revolution.

I agree with chris 100%, a legion of SUPER NA'S

I don't know if this is a joke but if it isn't PLEASE give us a write up. I've been wanting to do this for a while but I just haven't had the time. I'll have time this summer and that is exactly the kind of setup I'd like to be running. Everyone has been telling me it'll be trouble but it's because everyone who has trouble tries to run high boost and I don't want that, this sounds like exactly what I've been trying to do. Let me know how it goes.

EDIT: I AM a little skeptical from those pictures though, what kind of piping do you have to get it into the TB?

thats a shit load of atv dude.

they arent NA's anymore :)

this better not be a joke, you just might be a legend. if thats the case and there is a write up then you can bet there will be a hell of alot of us NA guys doing this for the 300 bux......

cool beans dude, but the outlet piping is way small... same goes for the inlet.. you could see a decrease in power loss if you increase both inlet and outlet piping diameter.

its taking a lot of power to move that much air through a soda straw...


good job! i like it!

:bigthumb: :beerchug: :rock:

I would really like to see the mounting bracket. What's the "engine pad"?

This is just a guess but Probably the engine mount on the engine side not the subframe. The engine moves when you drive so you want the blower mounted solid to the engine otherwise you pulley will not stay aligned and off comes the belt.

what about that electric super charger that lasts a mere 15 secconds?

That thing cost signifigantly more :O

dont know much about a sc but dont you need oil lines to feed into the sc? cause correct me if i'm wrong isnt there a turbine of some sort inside the sc to make it forced induction?

You're looking at a vane (or roots) type oil-less compressor.

I heard somewhere that pre-mix fuel will extend it's life. (something to think about)

Nice work - It must be a blast to drive..

Sureshot, why would premix extend it's life? I don't understand that one since the oil is injected further down the air stream.

Zbrown, I'm asuming you mean, when you say you piped it like a turbo that you have the AFM in the original place and the same curve under pipe that the turbo has, but from that picture it looks to me like the pipe would be sticking out the charger right into the wall. Can you get us some better pics?

You genious little bastard! You're in highschool!? Bravo man...I can't wait for a writeup.

-Joe

its a great idea, but in my opinion, its a waist of space. cyntrifigal would be the way to go. its lighter, smaller, and easier to mount where it needs to be...on the right side of the motor. they also last longer than roots type superchargers. its got the cool side of a turbo and a small gear box where the hot side would be.

Ummm... the cintrifugal doesn't hit full boost till MUCH later in the range, and if you don't want high boost, this seems like a better choice, moderate boost through the whole RPM range. If you're going for higher boost I'd say yes, but this would seem like a better choice for this application.

Duh, I forgot for a minute, I'm a little slow, and retarded

so were we all the victims of a cruel, cruel April Fool's joke, or is this for real? Because if it is, I know how I'm going to spend my weekends for the next month...

Oh, and will the tranny hold up to the extra power OK?

Wow guys thanks for all of the complements, Also that is some funny crap about it being an April fools joke, but this is the real deal. Now before you look at these pictures i have 1 stipulation
1. I dont want to hear any shit about my awesome idler, or my kick ass hose clamps, i have a new idler and some more nice t-bolt clamps on the way.

I picked the roots type because i wanted instant boost and more power down low, and trust me i got what i wanted, Not to mention that i still have the 3.90 rear end form the 5speed swap that doesnt help matters. Everybody has their own opinion but this is what i wanted to do.

I wanted to use 2.5" piping for the s/c suction but the 2" pipe was a perfect fit for the intake port of the s/c(2.5" was to big) All i had to do was squeeze the pipe with a vice slightly and it was perfect, i think that 2" has enough flow anyway

As you can see in the pics i dont have my blowoff valve on yet, it is on its way. I am planning on putting it opposite of the bypass valve on the pipe between the s/c and the throttle body. I need the blowoff valve because at high rpm shifts the bypass valve cant vent the pressurized air fast enough and i have slight belt slippage. With the blow off valve it will blow off only at the high rpm shifts . Do you all understand what i am saying?

Study hall is about over so i am going to start posting pics, Ill write more tonight after school. Keep the comments and questions coming, Any ideas for making it better

zac

damn wrong pic(that is my car)

another

You're right, I just noticed he said the compressor is upstream of the TB & injectors (turbo style).
My bad..