usmcjsy

iTrader: (1)

I am looking at BNRs hybrid stage III Turbo and a Hybrid Stage II from MazdaRacing.com. Does anyone have either of these turbos? I was just wondering the usual questions. I was wondering about lag? How many pounds can they run without going bad and so on.
I just put on a full 3.15 in back RB complet TurboII exhaust. My Turbo was pushing between 10 and 12 psi and it just took a dump. I ran it for about a week. Now it makes a real hiddeous whining sound. It really sounds sick at idle. So I want a good solid Turbo upgrade. Not somthing that is gonna puke from 10 psi or somthing that runs outta breath in the higher RPM. I also do not want severe lag. Any input that is sincere, and not sarcastic will be appreciated.
Thank You,
Jeremy

Also any other suggestions on a hybrid turbo other than those 2 places is welome.

Scott 89t2

I hope you have some other mods?? fueling etc.

12psi on the stock turbo will kill your motor. 12psi on a hybrid will kill it even fast.

be glad your turbo went before your engine did.

the hybrids should be good till 15psi

usmcjsy

iTrader: (1)

Well I talked to Mazda Trix, they said the increased boost from that exhaust system should be fine with stock fuel system and intercooler. I also looked at RX7.com and they said the stock fuel pump is good for 300 HP and the injectors are good for about 425HP. That exhaust should only be giving me around 240 with the increased boost. I also bought the FCD with the exhaust.
Anyway I am looking for people with hybrid Turbos that can give me some good direction. I need a good solid turbo that can handle the higher boost. I am well aware of the need for fuel upgrades and the poor effiecency of the stock intercooler. Thanks for looking out for me just the same.

Ryde _Or_Die

Huh? How many stock injectors are we talking? Stock injectors are good for 183.9RWHP from rx7.com on my computer.

usmcjsy

iTrader: (1)

Well thats what they say on there website, I am not sure if they are talking RWHP or what. Anyhow this is getting way off the topic. I trust MazdaTrix with them saying the exhaust system is safe with the stock set up. Check out RX7.com under the fuel section click on the fuel pump and injectors there is a little narrative about the stock fuel pump anmd stock injectors.
I know the A/F meter is not a accurate tuning device but at 12 psi I was still int he green or rich section at full boost.
So what about those hybrids..? What is recommended as far as a TURBO IS CONCERNED? If I want fuel managment questions awnswered I will ask questions about it.
Thanks

usmcjsy

iTrader: (1)

By the way just checked and RX7.com says the stock injectors can support up to 420HP. Look under the second generation section and then under fuel upgrades. It does however say they are running at max duty cycle and that should not be done. So I think I am safe with my 240HP. Thanks for all the concern though gents.

1987RX7guy

iTrader: (3)

http://www.rx7.com/cgi-local/2ndgencalc.cgi

Use that. I put in 100% duty cycle and it gives out 317hp
I boubt that you can get that much safely.

Ryde _Or_Die

Well say that the stock injectors could support 420hp to the flywheel(even though their own fuel calculator says they will only support 317 to the flywheel at 100% duty cycle; it would take a duty cycle of 132.5% to get 420 flywheel HP). You can not just magically get the duty cycle up to 100% anyways. There are reasons we all do fuel mods, and its sure isn't something we want to have to do. Just trying to look out for you, but mod as you wish.

rx7_turbo2

Fine don't listen to anybody, blow your motor, your not the first and you won't be the last.

Now as far as hybrid turbo's go. It's a good option if your looking for moderate power. They spool quickly and can make 300rwhp+. They probably wont make much more than that the exhuast side is too much of a bottle neck. They are a good balance between power and expense but in no way the best option out there.

All of that is useless info because you will need ALOT more fuel to run one, you can't just bolt one in and turn the key.

usmcjsy

iTrader: (1)

Ok I never said I was not going to upgrade anything. I was told earlier in this thread I was lucky I did not blow my motor running 12 psi on the stock turbo. The only thing not stock on my car is the exhuast system. Which is a RB full turboII exhaust system. That is suppose to bump the HP on a S4 to around 240 HP. I was also told by MazdaTrix that the fuel system and intercooler are fine in stock form with the output gain from this exhaust. Then I was just quoting what I read from RX7.com. Anyway I plan on upgrading everything. Thanks for all the concern (sincerly) however please read the 1st question in this thread on the very 1st post. It asks does anyone have either of the 2 Turbos I mentioned. I see this all the time the thread starts out on one subject and before ya know it its all about somthing entirely diffrent. Also I am not worried about popping a motor. The cars motor was hatched when I bought it. These motors are not that difficult to switch. Granted its no picnic but I can live with it. If you race ya know motors pop its just part of the game. So if I make a tuning error and it pops oh well. If that was my biggest fear I would not mod or race.
So for all who read to deeply into the questions, Yes I plan on upgrading the fuel system, going to a FMIC, and running a FCON. (I suppose I will have to listen to how I should get a SAFC now). I read a lot of threads on here and they all end up with people bickering back and forth. I asked for fact and opinion basically on 2 hybrid turbos and got a schpeel on how to build my own car. Then I see people on here who want advice on how to build there whole car and they get told to get bent. I just do not understand it. Sorry but I had to let off a little steam. Please if you have no valid input on a thread just leave it alone. I am so tired of people on here calling someone stupid who has just entered the rotary or turbo scene. If we were all gods on here we would be running 9s and 10s but very few in here have even touched the 10s. We are all learning. The boys at MazdaTrix and RX7.com and the like are still learning. You think those guys have never popped a motor? So what if that is your worst fear sell you car and stop modding all together.

2a+RoN

There is somebody on here advertising upgrades in the for sale section for 410 i think. Includes upgraded compessor housing and wheel. I think a hybrid would be a great turbo for what you sound like you want out of your car. Now, the other members were not trying to flame you or anything, just trying to look out for a fellow rotorhead. I would definately not call full exhaust on stock fuel safe however. I hit fuel cut w/ just a 3'' exhaust from the turbo. The thing is, wouldn't you rather spend a few hundred on proper fuel than 1G or so everytime you blow your engine? We're not all out to tell people how to mod their car and call them stupid. I appologize for all those members that made you think so low of us.

usmcjsy

iTrader: (1)

Thanks

RETed

Stock fuel injectors and the stock fuel pump all run out of gas about the same time - about 250bhp at the FLYWHEEL.



-Ted