Good day, just found something on the web about vortech (water cooler) supercharger s2000

it use water cooler instend of intercooler

and the FD engine space should have enough to fit that in, just similar to s2000 need take the stock air box out

Do you guys think it a good idea to do that?

what is in my opinion:
1. short pipe less turbo lag or even NO lag
2. less weight
3. radiator for water cooler is samll (assume that enought to cool water down)...
4. more compact componentin the engine space......look cool

 

no, how is that more compact?

 

Turbo= free horsepower

 

Pro's and con's to both setups.

 

The model shown is a centrifugal type, not positive displacement. I would choose a turbo over that any day.

 

Most supercharger setups would require a lot of custom work for the rx7 since there isn't much of a supercharger market for them. Not too big of a deal if you're good with things like that or have the money to have someone else do it. But i do think for a performance street car its a great idea. Turbo's aren't truely free power because they add a restriction to the exhaust. But they do typically make more peak power. One thing about a supercharger is you wouldn't have an exhaust restriction so it should help lower egt's and make for a little bit cooler running engine. The power delivery would be different. More power down low and linear rather then coming on all at once by a particular rpm. If i ever get another fd i would love to experiment with a supercharger setup. It hasn't really been messed with much so you're more on your own with getting it all to work right and matching the supercharger size to the engine.

 

with a centrifugal supercharger you wont make "instant boost"

 

how about the twin charger (turbo + supercharger)

would the car run smooth in high rmp,low rmp and hight gear low gear

coz i saw a twin charger S15 on XXXtube <-- don't know if i allow to post it out, but people should know what it is

and it runs like a plane....

 

It could work, but it would be expensive and complicated. Would be more difficult to figure out what sized chargers you would need, But i would guess you would want to go with a larger turbo and smaller supercharger. This way you have boost sooner and would help spool the larger turbo which would generate more peak power.

Piping it would be a bit complicated too, but I guess you would just have the turbocharger feeding directly into the supercharger. Now whether the s-charger would be a restriction once the turbo is out flowing it is another question that comes to mind.

 

Rotaries generate quite a bit of flow so you might as well take advantage of it. Centrifugal are similar to turbos but more linear in the power curve since it's all regulated by RPM. I would be interested if someone else made it for a reasonable price but then I think about the exhaust noise.

 

I suppose actually the supercharger could feed into the turbo inlet, since the turbo would ultimately have more flow this would probably be a bettert way to do it.

EDIT: thinking more about this, either way the supercharger would be a restriction limiting the amount of air the turbo can push or pull... though maybe this isn't really a big deal. I suppose some sort of valve could be put in to bypass the supercharger once the turbo is spooled. And maybe even an electromagnetic clutch to disengage the supercharger to gain back some lost energy.

 

i was thinking the intercooler outlet should feed into supercharger watercooler inlet

coz supercharger run well in low rmp, so i guess all the short pipe is for that and it drive by engine so it run effective in low rmp

turbo require higher engine rev to run

when the car in low rmp, got supercharger to speed it
once it hit on high rmp the turbo get involved

than i think put a supercharger kit in,
make the pipe in between charger and watercooler to be -- Y pipe --
turbo intercooler outlet into -- Y pipe --

Air from: charger + turbo intercooler outlet into --->watercooler into ---> engine

 

btw why so many people make v-mount for rx7?

 

There's no sense in compound turbocharging with a centrifugal, go roots or twin screw. There's not enough space for an effective A:A and A:W cooler because an effective long term A:W requires a radiator. Rx-7's make a lot of heat, FMIC's block the radiator, that's why vmounts are so popular. That would be the best bet for your application.

Centrifugal only if you're going to replace the turbos and want a more linear powerband.
Roots if you want boost down low to support the turbo at the top end.
Twin screw if you've got money to blow because it's better than both of the above.

 

so is this Centrifugal or Roots (i guess is Root), just need someone confirm--> http://www.vortechsuperchargers.com/...=SUPERCHARGERS

therefore i could possible Root supercharger with turbo charger together to have some boost while a low and high rpm, is it right?

twin screw..... quite sure have to cut hole in bonnet and make a scope for that,
on the web it say will have boost anytime, sound awesome
http://www.whipplesuperchargers.com/...sp?ProdID=1162

 

Centrifugal.

It's much more complicated than you think.

 

The first one is centrifugal.

Yes, in theory.

Neither a roots nor a twin screw require a compressor scoop. The twin screw design is more efficient than both of the other supercharger designs. I think Gordon (gmonsen) is going with a centrifugal because he doesn't want the instantaneous boost down low that a twin screw would deliver. I'm not aware of any company that makes a kit for the rotary with a twinscrew so some fabrication and probably a great deal of tuning would be required. Atkins/Camden Superchargers do make roots kits for the 13b.

 

Thats a centrifugal supercharger...

Here is some info that will help you out click here

 

Gordon, as he stated above, is working on a Whipple charged 20b (twin screw).

http://www.whipplesuperchargers.com/

-Jim

 

I was under the impression that he was going with the Whipple-type twin screw setup.

 

Okay, got it.

 

Yeah i'm pretty sure gordon is going with a positive displacement type not centrifigul

 

ok , got the idea now

so centrifugal supercharger and turbocharger are similar when come to response,
both need high rpm to run, but has not much power during low rpm.

twin-charger will have power at low and high, but the amount of airflow is the same at anytime.

So if i want a high boost at high rpm i need turbocharger,

how about high boost at both low and high rpm............?
which mean i want to speed to real quick at any rpm.

 

Hi Gordon, so the whipple supercharger speed up the car faster than turbocharger at the beginning, once hit on the high rpm the turbocharger accelerate faster.
am i correct at this?

 

I had that exact kit on my 350z and that rocked upper end. Full boost on these unit are typically around max rpm but you get great launches out the hole. I had another 100hp added to my engine when i installed the kit alone..I would love to see someone put one on a rotary but use a FMIC instead of that water cooler.