evilbada1

You will have to push the **** out of the little trust turbo to reach 350whp.
And even if that's possible, why would you want to maximize the turbo or even more?
Pushing it that hard will shorten the life of the turbo... ever thought about that Greddyturbo1?

Broke_Apex_Seal

here is a nice pic of a blown engine hahahahah

Greddyturbo1

Evilbada1, I don't understand the logic in your statement, You say pushing the turbo will shorten its life... Everything we do in life that we push hard will shorten it. Why would you want a turbo or Supercharger and run 2psi boost..What's the point in spending that kind of money, if your not going to push it, at least once in awhile.

I guess what I'am really saying is

1. we really don't know what's the max boost the engine can handle ,be it a turbo or SC
but rumors are that 350whp-375whp is fine for this engine..

2. The reason I would push the Greddy turbo is
A. the turbo is not expensive
B. I like the fact that , Because of the size of the Greddy Turbo, even when tweaking the turbo it will still give better Bottom end than going to a larger size Turbo.

3. And finally, I'am not telling you to buy a Turbo or SC, or what to do with it when you get it, I'am just saying , what I have and what I'am doing with it, you don't have to like it but that does'nt mean it wrong..... Thanks for listenning

Gerael

wow... that a renesis? howd it happeN?

Manuel

the greddy turbo can't flow enough air (cfm) to make much more than 300HP. At high boost (I run it near 16 psi) it turns into a giant heater.
The 400HP rated on the greddy turbo applies for piston engines.....................
For a rotary engine is different.

Gerael,

how much boost can the renesis handle?

It depens on the turbo that you're goin to use,
14 psi from a GT35R is not the same as 14 psi from a T3
for example.

We feel save runing at 14 psi using GT35R, we runed 19 psi but we don't
feel save.................................

Manuel

Greddyturbo1

Manuel, I'am talking about a modified Greddy Turbo...

RX8PR

I know...........................

The best you can do is bore and install a bigger wheel (propeller)
this is not expensive this job here in PR probably cost $250, but how many more
cfm (lb/min) you would get........................
you would need to run higher boost to make more HP, but the only way to know how much HP you can make is doin it. So just go for it.

On one point I was thinking on doin that but at the end I prefered to use a GT35R
that can supply 65 lb/min. I can make higher HP gains with less boost.

I have a friend that damage his renesis engine runing 30 psi of boost.


Manuel

Fanman

Damn ! You crazy Puerto Ricans !

rkostolni

There are many Mitsubishi guys with TD06 housings that are making quite a bit of power from them.

Fanman

Read RG's explanation on why/how generating hp from a turbo on a rotary engine vs. a traditional piston engine are very different. You can not get the same hp from the same turbo on a rotary vs. piston engine.

golde4u

the turbo in the Greddy kit is rated for 400hp. Its an 18g turbo, the same one they use in the EVO'S. The reason the boost falls of has nothing to do with the turbo itself. Give a call to Altered Atomoshere or Vivid Racing. They both have tuned the Greddy kit. As with any turbo setup, it takes tuning. Dont expect people without true Rotary experience to extract good results. A couple of my friends were running 550-600hp at the wheels on thier RX 7's, but they had a wealth of knowledge. The Renesis engine is new so its gonna take some time for tuners to adjust to it. And frankly most tuners just dont have the know how. But for now there are several Japanese tuner shops that you can go to for FI, Like Blizt, Knight Sports, Pheonixs and more. Pick up a copy of HypeRev and get busy.

adrian-1

The Greddy RX8 turbo is a T618Z. I've heard it's hard to find and I highly doubt it's the same one the EVO's use.
Vivid racing did a write up on their pepsi RX8 and how they fixed it all up and installed the Greddy turbo kit. They dynoed it but didn't release results... my guess is the results weren't what they were expecting.

Moostafa29

From what I've heard is that the T618z uses the 18g compressor, and is rated for 400hp...with pistons. Since we have rotary engines, and higher rpms, its not going to give us the same power. I believe RG has written several posts about this.

golde4u

18g is 18g. Greddy just uses different trims and such. The setup they use is thier setup and they will not release the maps because they dont want to be copied. Greddy uses Mitsu based turbos and HKS uses Garrett, etc. etc. Mazda has done some special things with this engine to insure its longevity because of what happened with the RX7, they purposely kept away from FI. Thats why all of these company's are having a hard time with thier kits, they cant get past the factory cpu. If the greddy kit didnt have potential then RE Amemiya would'nt use it, and they have some of the best rotaries out.

golde4u

I spoke to the guy who worked on and dynoed the car and he said he loved it. he also told me the reason the turbo was'nt holding boost was engine related, not the turbo. I also spoke with AAM and they confirmed that its not the turbo either. But just for the record, anyone can talk trash about the greddy kit, but go one step better and build and market one yourself. Dont point at so and so and say the have a kit coming out thats making such and such at the wheels. Thats all speculation. Get out the math and tools and make a better kit yourself, then show me you have bragging rights, cause you did it.

RX8PR

golde4,

Again,

the greddy turbo can't flow enough air (cfm) to make much more than 300HP. At high boost (I run it near 16 psi) it turns into a giant heater.
The 400HP rated on the greddy turbo applies for piston engines.....................
For a rotary engine is different.

Manuel

golde4u

If its flowing 260-270 at the wheels its flowing 300 hp already. If Mazsport was running 291 at the wheels at 12.5 psi, its flowing more than 300hp, again. And at 16 psi what are you dynoing?

adrian-1

Any idea what the dyno numbers were?
I myself have the Greddy turbo setup and do like it, EXCEPT for their EMS, blue emanage blows.
Did Vivid or AAM mention anything about tuning the emanage?

golde4u

no but he did say he liked the Mazsport setup though. I personally want to see if Apexi will make a Power FC for it.

swoope

iTrader: (5)

a friend of my brothers sisters uncle said. o wait the latest greddy map that worked before the latest flash greddy got from a member from this site.

after that no help, guess they are waiting for the problems to be fixed from this forum so they can help everyone.

beers

Fanman

I believe it was 309 whp. If you look at Mazsport's video he was not getting any more hp from 12.5 psi than he did at 12 psi. They claim that it is all turbo sizing limitation that is causing the boost to drop down to 5.5 psi at high revs. They will soon have a modification on the turbo (porting & polishing), that will allow it to flow more on the top end. This turbo (stock) hits it's limit at around 300 whp. The notion that it can go to 400 hp,about 330-340 whp, (let alone 400 whp) is unrealistic unless it is modified. The limitation is all about the small size of the turbo. They are currently running T04 & GT35r turbos on this car that are getting far higher hp figures (350+ whp). Has nothing to do with a limitation of the engine.

RX8PR

With the greddy the maximum that I maked was 305-308HP at the wheel with 14-16 psi..........We don't find any big difference on HP increasing 2 psi of boost.

With the GT35R I'm runing 328-335 HP at the wheel at 14 psi of boost. I'm thinking that
to hit the 350 HP I would need to install a bigger intercooler than the sparco that I'm using now. I'm goin to keep studing how we can find a few xtra ponies. The next step probably is the "pineo" to be sure that the the engine doesn't move..............
But moving from 273HP to 328HP is a lot better.............

Manuel

golde4u

Sounds like your doing your home work.what are your HP/TQ curves like with that setup? do you have dyno print outs to show the difference? If you can find a turbo that has down low midrange and runs to redline without running high boost I would be very much interested. Are you still using the E Man, or have you gone to a stand alone?

RX8PR

Home work?
We have a lot of experience with rotary engines and from 6 moths ago we have complete control of fuel and timing of our engines. You can check my thread to see all the changes that I maked to my car.
The search button is your best friend!

Manuel