y0,

so im getting a boost controller put in and im ordering the Turboxs exhaust. I got a little trick up my sleeve that im planning on doing, but i wanted to run it by you guys 1st to see what you think.

my buddy has an Evo, which he just did a turbo urgrade to.
My thoughts are to drop his old turbo in my car and replace my GReddy one with it.

My 1st thought was: It probably wont fit.

but im sure my mechanic can do it.

What are your guy's thoughts on this?

Id be able to push a lot more PSI safley this way.

Its from an Evo 8

 

Initial thought: No way that bad boy is gonna fit. Then again, what the heck do I know... I'm sure with enough fabricating it might be possible but then you gotta ask yourself....is it worth it??
Have you thought about upgrading your Greddy kit with some parts from Mazsport?

 

what kind of upgrading?
piping? hoses? plugs?

(im getting new plugs this week also)

 

Search and u'll find the upgrades.

ITs not that hard to do. right ?

 

no, not very hard at all....

... is it hard being you?

 

Romeo: think this might be money well spent.... https://www.rx8club.com/mazsport-104/greddy-turbo-upgrade-103803/ (turbo upgrade)

 

bleh. This sounds more for like "maintaining a turbo" Yeah, sounds like a good little helper, but this wont really allow me to use more PSI.

and thats $900 that i can use in other mods.

 

thanks anyway, Jedi.

May the Force be with US.

 

Not to mention the EVO unit is a dual scroll turbo.

 

yeah, im a n00b. I just pay my mechanic to do miracles. lol

what does that mean?
it cant be done?
or its gonna be hard to do?

 

This statement best sums up dual scroll turbocharging

"Dual scroll turbo is one which has the exhaust housing and/or turbine manufactured to provide the affect of having different two different "trims". So it can spool fast and make power"

It could be done but I think you would need some other parts to make it work which would make it not worth it. I'm not sure what manifold you would use or if one would have to be custom fabbed.

 

Not entirely so my young Padawan learner. As taken from another forum member:
Basically, upgrading the internals of the greddy will make it much more stable at higher PSI...which is what you're looking for, right?

 

Just remember that it takes that stock EVO turbo somewhere around 19 psi to flow enough air on a piston engine to make somewhere around 275 hp or so. I don't remember what the exact number is and I suspect that power went up a little bit fairly recently but it's not far enough off of this to make a difference. Since a rotary uses air less efficiently we need to subtract about 30% off of this power number to see what it would make on a rotary at that boost level. That's somewhere around only a lowly 200 hp! That turbo is WAY too small for a rotary. It's not even in the ballpark. You'd need 2 of them. That turbo makes the Greddy unit look like a flow monster. Get rid of that idea. It's worthless.

 

The BSFC of the Renesis is, at its worst, only 10% less than a piston motor - 60% vs. 70% or so - which is only a 14% deficiency.
Since we are all so quick to point out that flow is a more substantial measurement of power potential and the Renesis can flow substantially more air than a similarly-sized piston engine, the above comparison becomes moot.

 

rotarygod, makes a good point that I did'nt think of.

 

Yeah think it through. Besides the fact that you can't just 'push more psi' The turbo does have to be capable, but think of the fuel necessary. I don't think even with if the greddy could handle more, your fuel system probably wouldn't handle much more without upgrade also.
________
Adelyn

 

yeah, if that was the case, i would upgrade my fuel injectors (infact, im doing that anyway) but after reading what you guys have said, It seems completley retarded to think of doing it. Im glad I ran it by you guys.

and Yeah, that Greddy Upgrade from...... Mazspeed was it? sounds like a good idea now.

Thanks again.

/RoMeO got PW3D!

 

mazspeed? is that a mazsport/mazdaspeed hybrid?

 

you mean you havent heard of it?

 

dude... that would rock!

on a seriouse note, the only reason you want to run higher PSI im assuming is because you want more power right? well, the g618z on the renesis loses efficiency and HP after about 12 psi (if i remember correctly) because of the heat generated.

by replacing that turbo with a smaller turbo from the EVO doesnt make any sence at all. psi doesnt make HP, flow does. just because the evo runs that turbo at 20-30psi for max efficincy, it doesnt mean thats what will will happen on the 8 if you bolt it on. upgrade your turbo with a gt28/30/35 or something depending on the amount of power and the powerband you want. ive heard there is a gt35 with a 28 twinscroll hot side now. that would make an awsome turbo for the 8 if going twin scroll wasnt such a pain in the ***.

also remember that our motor is a fairly high compression motor. it demends on the tuning and spark settup but in general, you wont be running very high psi compared to most other cars. your HP will be less for now too. a gt35r will put out 500 or so WHP on an evo. the most ive seen on a renesis was about 400.