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.