Turbo all the way!!! Way better!!!!

leave the superchargers for the domestic cars

 

after all the tech talk... i run a camden 7" sc kit on my gen one car. i have a mild port t2 block and low compresion rotors. this is cause i want to run nitrous as well, but... the point i want to make is. if the power levels you want to make are moderate, the sc is a excelent and very unique option. my car dyno'ed in at around 220hp at the wheels and ran 13.5 with street tires. true not super fast but the cool thing is that from 1250 rpm and up this this pulls like a v8. pulls hard to 8000. if a guy were to run the charger on a tt block with some big ports and some higher comp rotors i would garrenty you could easily see 260 rwhp. and still have gobs of torque at low rpm. and there is something to be said about the wine of a supercharger coming from under the hood..... good luck in your decision

 

ive read somewhere about sc mr2 guys that it is possible to run a sc and turbos. wouldnt it be the best of the two world ? even if it would cost alot. would it be doable ?

 

One of the ways to run SC in conjunction with TC is to run the SC with a magnetic clutch type pulley that disengages at a fixed rpm and let the TC takeover. I seem to remember this was done back in late 80s.

 

see turbodyne.com

'dynacharger' included elec motor in turbo centersection to help with spool up. the 'turbopac' was a motor driven compressor, pulled a rew hundered amps to get 4-5 psi for short bursts. honeywell/garrett were alleged to be interested in buying them ... but apparently a bogus company ... interesting read:

http://home.arcor.de/hildst/AsenSST1e.html

 

the thing with superchargers is, In my opinion, they are robbing power to make power, turbos are free power./ If you'd ever wanna do big HP on turbos, you can have 800+ Horses (with enough money) and have a drivable car that isn't only drag, I dorve my friends rustang with a charger that is pushing 420hp and it drives horrible in the city, its a drag ONLY car. The rx7 is to pretty to be drag only.

 

I love this statement

Where are you going to get this magical electric motor that requires no power to run? No draw on the engine?

Oh, and one more thing... it's spelled SURE! As in S-U-R-E!

 

I hate threads like this. Makes me think this forum is fulla idiots.

Superchargers have their advantages and disadvantages. Turbochargers have their advantages and disadvantages.

Like most things in life, you need to ....
A) Understand the technology.
B) Pick what works best for your application.
C) Use a spell checker.

 

Ahh.... love this place.


Anyway, back to the subject.

http://www.rotrex.eu.com/

These guys have been around the european auto scene for a few years now, and they do build some quility superchargers that are geared to spin in excess of 100,000rpm. Depending on the application, there chargers are geared for a max engine speed of 10,500rpm which equates to an sc geared speed of 120,000rpm.

I'm a big fan of these superchargers for most applications, however, the standard sequential setup on the RX-7 means that the lag is not sufficient enough to make a sc beneficial on the fd imo.

To the gentleman's original questions. If you want to do it, then do it. It's entirely up to you, as long as you understand what it is you will be gaining and losing from the conversion.

 

the exhaust port on a rotary engine provides a straight, open hole from the combustion chamber to the exhaust. The opening and closing characteristics of the port are very sudden. The sharp, strong pressure waves from this exhaust port add up to a very loud and unpleasant exhaust note. Placing a turbocharger on the exhaust quiets the rotary's voice significantly by breaking up the exhaust pulses--just as it does in a piston engine--but the side-exhaust-port rortary shines as a naturally aspirated powerplant.
SC rubs power from the engine to operate. the best answer will be "find one that suits your application."

 

NA RX-01 has the same power you making, no SC and TC needed. the engine is same one in the rx8

 

 

yes some exhaust and velocity energy is cleanly used to drive turbine, but bulk of compressor shaft work comes from a high pressure in the exh manifold ... not exactually wha u want to suck exh out from the ports. Turbos require less hp than sc's to drive em, but not by much.

 

I was just thinking the same damn thing about 89turbo944, just didnt want to be the first.


But about the sc subject, I was thinking of posting this question just the other day.
What if heat and engine mess wasn't an issue and somebody was looking to got MAXIMUM hp disregarding the enormous stress on the engine by putting a supercharger and single turbo on their fd... or any rx7 for that matter. Could it work???

 

Yes, You would just have to work out the plumbing.