mike11_11

I know if I would look into it a little more I would be able to find the answer but im feelin pretty lazy right now. Im looking at picking up a Greddy kit but dont want to keep the small turbo.

Can anyone tell me what exhaust flange is used on the Greddy turbo kit (t3, t3/t4, t25) so I can check my turbo options?

Thanks for any help you can offer.

J.Cab

iTrader: (1)

look at this thread...I have the turbo and it kicks ***!!! and it bolts right up to the greddy manifold.

https://www.rx8club.com/series-i-major-horsepower-upgrades-93/newest-100%25-bolt-greddy-hybrid-turbocharger-168286/

Bryan@BNR

Actually the Greddy turbocharger isn't a bad platform. The bad thing is the small compressor wheel. The 10cm2 turbine housing isn't too too small. TD06H turbine is a great turbine wheel and the compressor housing will flow 375 RWHP. It is a T2 flange. I don't honestly think you will do much better than a hybrid Greddy for the amount of room you have down there...

mike11_11

This is actually my girlfriends car. I cant stand driving in this car because it's to slow. I drive an srt-4 that made 509whp on pump gas on the old setup so obviously 260whp in the rx8 isn't gonna be enough to make me smile. Im looking for something that will make at least 300whp without a lot of lag and that will hold boost til redline. Maybe something along the lines of the gt28rs?

Bryan@BNR

you must remember you are talking rotary HP. It take 20% more air flow to generate a HP vs. a piston engine. The GT28RS will not make but around 250 RWHP on a wankel. T2small :D. 50 trim minimum.

mike11_11

Do they make a 50 trim with the correct turbo flange? I saw somewhere that someone was making a 3071r work but didn't see what modifications were needed.

Bryan@BNR

I can fit a 50 trim to the greddy unit. Water cooling the center housing also can be arranged. It will extend the life of the greddy drastically. It is bolt up, no fab required except a source for coolant. i did 2 syclone/typhoon 50 trims last week which are very similar to the greddy.

mike11_11

The only thing that discourages me when it comes to modding a turbo is I can sell the included turbo and use the money to help purchase something better. Or I can keep it and just buy an upgrade for lets say 1300 bucks. It would probably cost me $1000 to modify this one.

PhantomRX-8

iTrader: (1)

Id go Bryans route if you want the turbo now. Theres about a year waiting list for the 3071R. 14 day turn around Bryans route, that is if he doesnt forget to ship it and put it in his inventory room!! Lol!! (had to Bryan!)

Bryan@BNR

Well if you do by chance do some other turbocharger, it will be a hell of a lot more than a grand. Being that a custom down pipe has to be made, along with different oil feed and return lines and intake duct. I would love to tell you it will be easy, but there isn't much room for even fingers down there...

mike11_11

Where can I find specs or pics of the 3071r kit?

mike11_11

**** I'll even make a custom manifold if I have to. Just cant handle not making power or spending 1k to polish a turd. I'm in no way trying to knock your services i'm just a bigger is better kind of guy. With my srt-4 I went from stock to ported stocker to 50 trim to 35r to borg s366 and a now getting ready to try out a custom 37r. I don't know why but I have a hard time deciding what really makes me happy.

Bryan@BNR

35R on a piston motor will make 600 whp. if you are running max boost and making 506 maybe you have a restriction somewhere that needs to be addressed.

BTW I have subaru customers with a 7cm2 exhaust housing with the same type of turbo making 520 AWHP with a polished turd. By god the turd is so shiny it doesn't stink any more.

mike11_11

Sorry to disappoint you bud with the 35r I made 509whp on 22psi and pump gas tuning with only a fuel controller. That thing was barely even breathing at that boost. "I admit I don't know much about rotary motor but please don't try to make it out like im stupid."

I think you are missing my point. Why take a $1200 turbo (just throwing out a number, dont know how much it actually costs) and put another $1000 into it. **** for that much I can buy a 35r, make a new manifold and all the needed piping and never have to worry about not having power.

Back on the main topic though.

What "other turbo" options do I have that will work with the greddy manifold?

Mawnee

Thats kinda the problem with the Greddy manifold, there arent many options that easily fit in that location. Clearances down there are really tight. Thats why after a ton of research the guys here on the forums have concluded the 3071r and upgrading the greddy are the best route for the greddy kit.
This is exactly why I didnt bother buying the greddy kit for a bunch of parts I'd have to throw out eventually to reach my goals. Slap together a custom front mount manifold and you can bolt whatever turbo you want on it

Psychofox

IMO greddy turbo kit is not for you...

mike11_11

Im starting to think this is the rout I will end up taking. The more I think about it most of the parts from the Greddy kit will be useless anyway.

PhantomRX-8

iTrader: (1)

Comparing a modified SRT4 to a turbo RX8 is apples to oranges. Thats great that your car makes 509hp, you WILL NOT see that on an RX8. The most we have seen so far (that is proven) is 414 with Esmeril kit. They are to the point right now where they are having to replace clutches, trannies, and rear ends. If this is your girlfriends car, I dont get why you want it to be such a power house. You would be surprised what 330whp feels like in an RX8.

swoope

iTrader: (5)

all this for your girlfriends car.. huummmmkkkyyy..

beers

blackenedwings

You should consider one of the other turbo kits with a different mounting location. The low mount location of the GReddy kit is so tight the largest turbo you can really fit down there is the 3071R. Consider the Esmeril kit (which is being upgraded to include a better turbo option and new external wastegate) and possibly the PTP kit. Neither of those kits will work with the AccessPORT which is far and away the best tuning available for the RX-8 right now, but Esmeril is supposedly running a 500 whp car on the stock motor, but with a heap of other modifications. They have a dyno and videos of a 414 whp car with only an ignition upgrade. Also, you might be very surprised with what a 300 whp RX-8 feels like compared to your 500 whp Neon.

Bryan@BNR

nah, I am not trying to make you look stupid. I just wanted to let you know that its not a bad turbocharger after putting all the goods in it. You can do whatever you want to your wifes RX8. I am just here giving you advise. If your application is for something bigger, I will advise you differently. I am here b/c I see lots of people need my help, not to sell a product.