now, i know that paxton use to make a kit for the 7 but don't anymore. and from what i have heard is that you just need to get the parts and fabricate the mounting brackets? recently i have been cruising around on ebay and i have seen a lot of used mustang paxton superchargers. i was wandering if it could be possible to fabricate the right kinds of parts nescesary to make it work? and when you add a supercharger to an n/a, is it a good idea to increase the size of injectors/fuel pump, as well as an S-AFC??

 

its probly a good idea to beef up the drivetrain.. it wont take a beating as well as the turbo drivetrain

 

you can get the kit from m2 it comes with every thing and it comes with a fuel pressure riser

 

Can you please post m2's website. Thank you.

 

the drivetrain would be somthing that i figured would also be necessary to upgrade. yeah, what is the m2 site, i dont know there prices are, but i just figured it might be cheaper to figure out how to use one of the paxtons from a mustang. if i could figure out the mounting, i don't see what else would be so hard. there is a paxton on ebay right now that is set for 9lbs boost. the other thing that i would need to do is get the right pulley set up so that it doesn't hit redline before 8000 rpm's.

 

I am really interrested in supercharging my car too. I just don't want to go carburated. Keep us posted Rotormax 4169 if you decide to go through with the supercharger. I would have a lot of questions.

 

well, i too have been giving some serious thought to this whole matter for far too long now. but from what i have seen, using the paxton setup, or any vortech for that matter, you do not have to go carburated, correct me if i am wrong. the only thing holding me back right now is that i am also looking for an everyday car to go to college with. ireally don't want to take the 7. but i couls also just go ahead anyway?

 

I didn't mean the paxton I meant the camden superchargers that Atkins sells (carburated). Thats the only kit that I have seen avaliable.
I guess I am lucky I have an '84 Corolla as my daily beater to college, and drive the rex on nice days. That corolla will never die!

 

SuperCharging is like Turbo just Instant boost, NO LAG!

It has less top end tho, and takes some horse to make some horse...

So you do need BIG injectors, Big Pump, S=AFC yes, Maybe even a new ECU to read boost so you ECU does't freak and cut fuel and detonate...
YOU DO NEED the turbo Driveshaft and rear subframe.
I have a friend who just did the NA->TII swap and he just snapped his driveshaft clean in half and killed his exhaust and tranny and the tunnel the shaft is in...Do you research!

 

I have been looking and playing with this for some time now. The biggest problem is going to be the brackets
I have seen the supercharger kits on rx-7 sites
where its running 5# boost and no psi relieve valve
normally when you run blower on efi cars
the air psi has to go some where when
you let of the gas(throttle body closes) at high rpms..
but guess it doesn't hurt at lower boost pressures..
running higher boost and pop-off valve will be a must
I think ..
not to mention fuel upgrade is a MUST...
I also located a v-belt pulley for my old paxton head
unit I have..might make life easier pulley wise since RX-7
has v-belt set up..............
just some thoughts here on this...

 

www.houston-rx7.net/forsale -- there is a guy selling a S/C'd FC like you are talking about.. maybe he can help you out..

good luck

 

my question is, if i can figure out the bracket setup, what do you do with lines coming off of the exhisting intake snorkel that can only be eliminated by removing the ac and the p/s. also, i'd have to come up with the elbow from the sc to the tb. i don't know if i would be able find one of those, or i guess i could have Aron Cake fabricate me one of his strawberrie adapters?

 

I want that car. Too bad its so expensive.

There was someone trying to spool up interest in a supercharger kit. But, I guess that there weren't enough people.

This might help:
http://www.geocities.com/boatseason/
http://home.earthlink.net/~burntoast/super.html

 

Can anyone tell me the advantage of SC over my turbo? instant boost? Just wondering why you dont see more for the down low power that the turbo lacks.

 

I think the only advantage in our case would be: one, I assume we all have N/A cars and its much easier for use to install them. Two, they provide excelent low and mid range power (no spool up).

 

Corky Bell's "Supercharged!" book covers the different types of superchargers, how to design a system (including intake, exhaust, intercooler, pulleys, etc.), but unfortunately it does not specifically address rotary engines. Yes, you will need to upgrade your fuel system, and an aftermarket EMS would also be a good idea.
http://www.amazon.com/exec/obidos/ASIN/0837601681

http://www.m2performance.com/

You don't see too many superchargers on rotary engines because the rotary makes its power in the higher rpm's. If you are limited to higher rpm's, then you may as well just use a 75% efficient turbo as opposed to a 50% efficient roots blower. Your stock turbo already makes excellent low-rpm boost due to its twin-scroll design.

More supercharger info:
http://www.superchargersonline.com/techarticles.asp

 

Here is a site that makes a kit SPECIFICALLY for the 13b and the 12a.

They are a little spendy, but horsepower costs $$$$

Rat

http://www.camdensuperchargers.com/

 

actually, superchargedse was the one doing the supercharger bracketry help he was only getting the dimentions and such for everyone though you would have to have a local place or the place he was having fab. up the stuff you need. you don't see many superchargers on rotaries because of the price for what tit would cost for the supercharger kit you can go out and buy a turbo. camden has been bought out and no longer sell the sc kits only the original kits did you have to change to carb. mariah is the one who boutgh out adkins and caden design, they are still working out the details that were bad with the previous designs though. like a poorly constructed bracetry, and the sc over spin due to improperly sized pully. i don't know what happened to supercharged88se (can't remember exactly) but i haven't seen him around here lately i think the thread is still open in the rotary non specific section. wheww that was long

 

oh ya if you want the kit contact mariah it's going to be coming out soon i hope but it will be 3500

 

the problem is that i really don't want to go to the roots type sc offered by camden and atkins. i dont want to do the whole carb thing, and i know that atkins has some setup that will still use the injectors but the price is rediculous. all i want to do is put together my own setup for as cheap as possible and with as much advice as i can get. the paxton sc's i have been seeing on ebay lately out of mustangs are going cheap and i wanna make it work. sll i sm gonna need are some specific pointers, thanks

 

If you have the measurement of the mounting bracket. I would assume that any shop could use 1/2 or 1/4in steel and create a bracket. Next hardest step would be to find the modified thermostat piece so you can run the radiator hose. Other than that I think it would be pretty easy. I cant imagine a bracket would run you much. How much are the superchargers you are looking at? How much boost are you wanting to run? (Need larger pulley for the rotary) I guess to me it seems easier than I original thought after some research. It's not easy but it just all the little things you need.

 

well, so far i have seen the paxton's go for between 500-1000. which isn't too bad if that is the bulk of the cost. i am going to want to run anywhere from 5-10 lbs. boost and from what i have read, anything more than 7lbs. will require some sort of blow off valve setup. now, i wander if you can use one like you would in a turbo setup or if it would be different?

 

Just a few corrections to make for you. Atkins bought out Camden. Mariah Motorsports has nothing to do with either of them. Mariah did buy the rights to the kit that uses the Paxton. I'm not sure what company marketed it before them(Paxton maybe?) but the kit was overpriced for the under engineered parts in it. The brackets were prone to failure not to mention the wrong size pulley that would over spin the SC. Yes you can use fuel injection on the Atkins SC setup using the Camden SC. Check out this site.

www.rotarymiata.com

The engine is out of a TII with stockports. When he dynoed the distributor was installed one tooth gear to the retarded side and he still made 220 HP. He hasn't made anymore dyno runs since correcting the distributor alignment problem but it definetly makes more power. Probably around 240 HP to the rear tires and all that without an intercooler and below 7000 rpm.

 

BEWARE of the paxton. Im just passing along info I heard on the net from a guy running one. He said that you cant run very much boost, because you can tach out a rotary and blow the super charger. Just what ive heard. Actually it makes sense. A mustang,with what a 6k redline and revlimiter at maybe 7k. My 86 will rev and stay at 8k. Im not sure if a paxton will put out over 5 psi at that kinda speed. Especially if you have a kokui.

 

overspooling the sc is somthing that i think will definately happen if you do not change the size of the pulley. i think i read that it needs to be at least 3.75 inches in diameter to acount for the extra rpm range. as far as the boost goes, i really wouldn't want too much, but there is a paxton on ebay that is setup for 9 lbs, thats enough for me! thanks for the info though!!