So I'm going forced induction on my GSL-SE, and I'm pretty sure I want to supercharge instead of turbo, but I'd like to get some feedback from people who have it done. I know there's a kit out there that allows you to keep the EFI too. Thoughts?

from my limited knowlege of blowers, i'd say that a turbo would be a much better application than a supercharger.....



dunno why... can't explain... it's just the way it is?? something to do with supercharger eficiency being 0 - Somenumber??RPM where as a turbo is from That number+up and up... and being a rotary engine it shouldn't sit anywhere below 5grand if you're driving right https://www.nopistons.com/forums/pub...IR#>/smile.png



as you can see i'm an expert https://www.nopistons.com/forums/pub...#>/biggrin.png







Cheers,

ben

Well my personal theory goes that the supercharger will give you the option to drive at lower rpm's and still have some guts (which is the reason we all run the Rotary at high rpm's in the first place...cuz there's no bottom end torque..that and well just because you can). Also, there's a smoother power curve instead of the spike when the turbo spools...so say your going around a turn at near the traction limit and get into the boost...this is bad. Just thoughts....I wanna hear what people with a blower have to say about it. I've heard that a drwback is that you get almost too much bottom end and spin a lot. This is why I'm posting! https://www.nopistons.com/forums/pub...DIR#>/cool.png

Does it have to be Rx7's. Here's Peter Demetre Rx3 one of the Pac Performance Boy's running a supercharger. His happy with it and he say's it's a great street car too.



Here's some info.



Owner : Peter Demetre

Engine : Supercharged 13B

Transmission : Supra 5 speed

Differential : Ford 9 inch PAC special

Supercharger : 371 blower

Engine Management : Microtech - MTX8

Engine HP : 500 HP

Engine Oil : ROYAL PURPLE

Transmission Oil : ROYAL PURPLE

Rolling stock : Simmons FR18

Rear 225, 35, 18 Front 215, 35,18

Awards : Glo Show 2000

Promoters Choice – Four & Rotary Nationals 2000

Sorry, I forgot to post the picture. Here you go.

NICE!! You don't happen to have any contact info for that guy or know where he had the work done do you? His particular application looks to be a bit more muscle than I would want, but the general 13B/supercharged with engine management is what I want info about. Thanks!!!

Sure, go to www.pacperformance.com.au and you can send an e-mail to either Rocky or George and they'll get back in contact with you with your answers.

Stateside there is Atkins rotary/Camden superchargers. They sell kits for the 13B and 12A. I don't think they have an efi setup though, all of their kits use Holley carbs.

1988 SC GTU



If you contact this guy please do not tell him you found this posted on NoPistons. I found him through a yahoo search. He is a local here in Central KY and I am trying to get him to post here and share his knowledge. So I would appreciate it if for now you don't mention his info being posted on NP. Thanx https://www.nopistons.com/forums/pub...IR#>/smile.png





Squeezed is nice but Blown is better, IMO.



If I were to do a forced induction project on a rotary it would be a supercharger also. Turbos are nice cause they do not have the parasitic drain that SC's have. However, the low end torque of a SC is nice even if you sacrifice 20-30 HP to get it. I have seen dyno and qrtr mile stats and they are my kind of nice. Plus I have driven several "blown" piston vehicles and I dig the low end power.



Check out Paul Yaw's SC RX-8 Renesis 13bsome time if you get a chance. This guy is building a Renesis 13b SC from hell. Paul might even field some questions for you.



Keep us posted here if you decide to SC a seven.

See, I would think that supercharging a non-20B rotary would pose problems because it would rob HP down low, where the rotary doesn't have any anyway. Obviously, this is wrong...please explain.

i was planning on eventually supercharging mine too. probably atkins style. two questions though, where can i get a larger than stock fuel pump? and does it have to have an intercooler?

Walbro makes good stuff but if you go atkins/camden SC and use the Holley avenger carb set up you need less psi from the fuel pump and high volume.



You would not HAVE to run an IC. But you still get 1% HP for every 10-11 degrees you can drop your intake temperature.

i just looked at the holley avenger real fast and it says it has an electric choke, that will get rid of the badly working knob sticking out of my dash?

I like my knob. https://www.nopistons.com/forums/pub...1047683785.gif



Atkins may be done testing their FC fuel injected supercharger project by now. It's similar to your GSL-SE EGI job. Give 'em a call.



No one is paying me for my endorsement of my dash knob. https://www.nopistons.com/forums/pub...IR#>/boink.gif

Thanks everyone for the input...very helpful and I promise I won't tell that guy about his info being here on Nopistons. Thanks again! https://www.nopistons.com/forums/pub...1047683329.gif

If you guys really want the "power down low", and don't care about the "high" end (like a supercharger).



Then get a small Turbo. It will spool up almost instantly, have No parasitic drag, and perform better across the board.



Have any of you guys driven/ridden in a stock twin Turbo RX-7? Why do you think they are so responsive (i.e. Instant Boost)?



Small Turbo's that spool up instantly. Why do the Big Power RX-7's have more Turbo Lag?



Big Turbos that take a little more effort to get them spinning.



Even a DRAW-THROUGH Turbo design would perform better on a Rotary

than some non-intercooled, Roots type, Supercharger.

What about the cost? Also, what types of carbs can you use? Last question; can I run a half bridgeport engine? Please say yes to the last question. https://www.nopistons.com/forums/pub...#>/biggrin.png

I'm going to start porting my 13B today. I need an answer soon.



To half bridgeport or not to? So far, I'm thinking no bridgeport this time. It's for an REPU so it needs good low RPM power.



If I just do a mild port it'll be ok NA or with a supercharger. If I do a half bridgeport, it'll be pretty good NA from mid to high RPM. However, SC and low RPM may not be as good. Not the best combo for a truck.



Blah! I'm calling Atkins! https://www.nopistons.com/forums/pub...IR#>/smile.png

Ok they don't recommend bridgeporting and their superchargers. I'm going to call a little later when Dave gets back.

Did they say why?

The guy there said they are geared to spin up to 8000 RPM. I'm going to call back later to find out more.

OK and BPs don't peak out until 8,000+

Yep. I'll need to mention that I'm interested in a half bridgeport, but chances are that he's an old schooler and only knows about full bridgeports.

It's best to simply streetport. Also, Dave said that you've got to match the washers in both oil pressure regulators. I didn't know that you were supposed do the front cover spring.

my god, that is the most beautiful rx3 ive ever seen. https://www.nopistons.com/forums/pub...IR#>/smile.png *cries*



i want one soooo bad... but they are so expensive over here, even for shitty ones. :(

do u have sites where u get tha supercharges