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Renesis
06-11-2004, 08:46 PM
okay i have a question to whomever wants to help:
I've got an rx8 sittin outside my garage, sorta new, already put ten thousand in two months on the odometer, yay. But I'm wondering...
Although it's a beautiful car with a beautiful engine, its got kind of sloppy acceleration. i've done some minor things to the rotory engine, increase intake and such. Small changes have added about 5 horses or so, i wouldnt know. But now I'm thinking, can I supercharge renesis? I dont think mazdaspeed has one available, but if they did, o man. I know I could turbocharge it, but I'm looking for excessive power on the lower rpm range.
If I could, should I turbocharge, or supercharge?

fpv_gtho
06-11-2004, 11:17 PM
if i was to supercharge it, i'd go with a centrifugal supercharger, i dont know whether the power gains on a roots type would be sufficient enough but they'd cure the low range response i suppose if it didnt hold back the engine too much

Niko_Fx
06-12-2004, 06:52 AM
Look back at the RX7, after all it is a turbocharged rotary engine and maybe you can get some ideas from it. Although the best way to get an answer for this question is just go to an specialist in cars/turbos and ask him what can be done. I saw in the cover of a magazine about 3-4 months ago a turbocharged RX8 that was hitting 800-900HP I believe it had a T80, but I'm not sure though.

I always think about how cool would it be if they come out with a turbocharged version for the RX8, hitting around 300HP.

Get some pics of your car and post it :)

And if you do this Turbo/Supercharger project PLEASE post pics and if possible a video :D

megotmea7
06-12-2004, 02:53 PM
if your looking for exesive power down low you might look at a different car than teh RX-8, hell the RX-7 has nothing amazing below 4krpm... with a redline of 9krpm take advantage, i dont know of any companies that have tried porting the renesis but you might look into that, on the 13b-t gains of 50-90hp were found with a simple port, and if you ask me a supercharger(even a centrifugal supercharger) would hinder the motor at higher rpm, if your looking for power out of that motor look into a turbo. but if you want a car that can just melt the wheels from idle you should go to your local chevy/ford dealership ;)

Renesis
06-16-2004, 03:32 PM
hey guys thanks for the feedback
as of now im still undecided about the whole thing, but i guess i could try supercharging it. But the thing is, i doubt i can find a company which could supply it, whether centrifugal or not. So far I've checked online and havent turned up anything. I've checked with Jackson racing and even skunk2 and they've said as of the moment there isnt an availible supercharger. Somehow I'm not surprised since the car is only about a year and a half old.
I've got some pics of the car (aptly named project renesis-- me and my engine :D ) but they wont be up for awhile, I'm thinking in about a month or two.

"Try to catch a butterfly and it will fly away, sit still and it will land on your shoulder" -poe

sandwich
06-16-2004, 03:59 PM
i'd advise towards turbocharging it....it's been done before, so somebody out there has probably already done it or has looked into it.

If I were you (and I'm not, I can't afford an rx8) I'd swap a 20b into it :D

Renesis
06-16-2004, 04:13 PM
yeah i know i can turbo it
but keeping the spirit of mazda, i kinda want to make this car as unique as possible. Supercharging... now that'd be fun to see. Also to drive too. The 8's got some lack of power in the lower range, i dont think turbo will help with that. It probably wont kick in until 6000 or so (thats a guestimate)

Renesis
06-16-2004, 04:13 PM
sandwhich-- where you live in boston?

sandwich
06-16-2004, 05:01 PM
mission hill...i go to northeastern, work in billerica, for the time being.

I see your point about low end rpm....rotaries are not known for their powerband...mostly their peak power, uniqueness, and scream.

If you're feeling saucy, what about a twin turbo setup? Linked sequentially, it would do the same thing. It would be a pain in the ass, but you may be able to pick something up from an older rx7 that somebody converted to single turbo.

Supercharging will be a pain in the ass for quite some time, i would imagine, as the renesis is so unique that fitting something would require some serious fabrication, rather than just slapping something on.

fpv_gtho
06-16-2004, 11:32 PM
yeah i know i can turbo it
but keeping the spirit of mazda, i kinda want to make this car as unique as possible. Supercharging... now that'd be fun to see. Also to drive too. The 8's got some lack of power in the lower range, i dont think turbo will help with that. It probably wont kick in until 6000 or so (thats a guestimate)


a company here recently came out with a turbo RX-8 kit. it was tested by a magazine and they commented the power came on well in a linear fashion and provided alot more oomph down low. i think only when you get over about 10psi that the turbo will make the engine more peaky etc