t24todd

iTrader: (7)

my engine is being rebuilt at banzai racing and am getting a large street port on my 13bt engine...question is then dont i have to upgrade my secondaries to the 720cc? i have a walboro 255 fuel pump alredy and rewired to make sure fuel delivery is constant. what other precautions should i do...? im not going standalone or anything that route also...thanks for any inputs

J-Rat

iTrader: (2)

So how do you intend to control those 720s? SAFC?

t24todd

iTrader: (7)

i kno fuel is gonna need to be upgraded soon but running the streetported engine.... would i need to upgrade the secondaries or will the 550 still hold up??

J-Rat

iTrader: (2)

there is alot more to the equation that you seem to not understand..

You WILL need more fuel, depending on the size of turbo/boost levels you intend to run on that street port, however just putting in 720s wont do anything but make the car run poorly. The ECU wont adapt for the difference in injectors.

Do some research, make some HP goals, and decide what you want to do. Then come ask some questions...

phoenix7

wouldn't it be better to ask Banzai racing?

J-Rat

iTrader: (2)

Not even Banzai can control what mods/boost levels/supporting mods the motor is subjected to once the engine has left the shop.

FYI, with a stock turbo, and stock boost levels, the ported motor will be fine..

phoenix7

I think you addressed his question in the last line.

Banzai racing should KNOW whether or not he'll need to replace his injectors if the only mod was a Street-port with more confidence though. After all they BUILD MOTORS.

J-Rat

iTrader: (2)

*sigh*...

Usually, when you have a builder such as Banzai build a motor, you have addressed the goals and aspirations of the engine before building ever starts -OR- you just ordered an off the shelf engine with a standard port that the builder stamps out for the average customer..

Unless the poster has discussed HP levels, boost levels, turbo type, and the myriad of other things that goes into building a higher HP rotary, its fruitless to speculate on the fuel requirements of the engine.

My sponsor BUILDS motors, because he knows how, but he cant TUNE one. Does that make him a poor engine builder?

phoenix7

^^^^ok, good to know that if I send a motor to AZRR they won't know whether i'll need more fuel or adjust the timing. Great heads up.


OP: call banzai. They should be able to tell you if you need to upgrade fuel if the only thing you've modified is the motor ports. SInce nothing else changed except the MOTOR THEY BUILT they should be able to tell you IF a modification like porting will require more fuel or not.

TehMonkay

iTrader: (-1)

I think phoenix 7 is having his period or something.

FWIW I know my friend ran 100% injector duty on accident on a kahren streetport at 12psi on a stock turbo, normally ran it at 10psi though.

phoenix7

lol. That or you're all too sensitive. the guy above posted **** that has nothing to do with it. who gives a **** if his engine builder can't tune? the builder should KNOW whether his product will NEED MORE FUEL. Am I being too demanding when I ask that the man that modifies a key part of my car KNOW what is necessary for the motor to run safely??

BlueTII

We do know, BUT nobody has asked us. The key to getting an answer is ASKING the question.


If the car is pushing stock boost with a stock turbo with all emmissions intact then the stock injectors are fine. If the intake and exhaust have been upgraded then the boost is higher than stock and upgrading the fuel pump and secondary injectors should be considered even on a stock ported engine.

J-Rat

iTrader: (2)

Yeah, because people that build motors understand that flow benches/testing/etc are one skillset, tuning is another. Since the builder apprenticed under Paul Yaw, and my numbers seem to stand for themselves, I feel pretty confident in my builders ability. You dont want a motor built by him, thats fine, he has plenty of other customers.

J-Rat

iTrader: (2)

Wouldnt it stand to reason that if you PURCHASED a new ported motor you might have already FIGURED OUT you needed more fuel? If you are going to chase high HP numbers, you would probably have SEARCHED (you should be familiar with that term), and determined what types of fuel systems would have WORKED. A PORT is only a small part of the equation, which is precisely what you fail to understand. Have you personally been involved in the buildup and tuning of anything over say... 400hp?

I've checked out your posts, great stuff! Nothing but "search noob", and a bunch of random flaming. You are a credit to the 7club..

NJGreenBudd

iTrader: (1)

To the OP:

Maybe look into getting some sort of fuel controller (safc) or even an rtek 2.0 to control those 720's if you get them. The rtek can control your fuel injectors and has presets for 720's so you don't have to tune from the ground up.

But like J-rat said, it depends a lot on your plans for boost, more than stock air flow requires more than stock fuel supply.

Phoenix had implied that it's better to ask the engine builder, in this BlueTII replied on his own, must be a good guy. But the entire point of this forum is to make info available to those who need to know. If everyone just directed posters back to the manufacturer or builder this would be a lame forum.

I have noticed that phoenix tends to have a "better than thou attitude", frankly I don't respect people with that kind of view. This is a place to share info and to support other RX7 owners, not just bash "nOObs".

Spectator

iTrader: (1)

Well, I think you people are a bit sensative. Phoenix helps out a lot of people, just like we all do. He just has higher expectations from poeple/builders/experts/noobs, that's it.

And I dont see how he bashes noobs unless they ask ''Ummm, yea, I want to go from N/A to TII, how do I do it?''

his answer will be to search....maybe said a little violently, but some people have less patience...And he doesn't have much patience. Bare in mind that posts are often misleading because you dont hear the voice expression behind the post.

Anyhow, as for the OP, 720cc are only necessary if you increase boost imo. Get a SAF too...

phoenix7

i'm mean. I don't believe I'm better than anyone, I just have more common sense and it irritates me when anyone asks a question that could have been answered if you just STOP, THINK ABOUT WHAT YOU WANT and then try it on your own first. I hope you never go to your parents and say: "mommy, Daddy, I have this girl upstairs and I don't know what to do, can you come show me?"


Thanks to BAnzai racing for coming in and settling this even though the OP should have done what I said in my first post.

My5ABaby

iTrader: (7)

The funny thing is, if you take out the whole social taboo thing and that fact that Americans see that as weird, that would be the smart thing to do.

Ignoring the whole sexual comment you made... why go at something blindly when you can get great advice from someone who knows a lot more about something than you do? Personally I'd rather learn from other people's mistakes than make them myself.

phoenix7

well take this thread as a perfect example. My first thought was: CALL BANZAI RACING. Look how Banzai responds. Common sense.

As far as the sexual comments: you survived the lounge after your initial "i'm here, I'm a girl with a 7" so I doubt what I say (which is nowhere near as fucked up as what the guys said to you back in the day) will offend. It's more likely going to AMUSE those that can understand WHAT i'm trying to say, NOT how i'm saying it.

My5ABaby

iTrader: (7)

I think it would be common sense to call Banzai too. But... that's why some people need a bit of help in life, common sense doesn't quite mesh well with them.


I'm not sure where my initial "i'm here, I'm a girl with a 7" was considering... well... I'm not a girl. I put the "ignoring the sexual comment" part to make clear I wasn't advocating having your parents help you with a girl.

phoenix7

I always do that!!! this is at least the 5th time!! well, ignore that part and my post still stands.

If you don't have common sense then you are in for a heap of trouble in life. Well, if I go by what the majority here believe then we should help the mediocre and stupid get by in life. So we no longer have natural predators, which in turn means more stupids procreating and on top of that we HELP them continue to infect the rest of the human race with stupidity and no common sense. That seems wrong to me. Why should I help someone that doesn't even bother to help him/herself??

My5ABaby

iTrader: (7)

I'm just really really bored at work.

t24todd

iTrader: (7)

wow my thread really went off...anyway im not stupid just trying to mesh my thoughts with others to come to a reasonable sensable utopia in the 7 world.i dont have the time nor money to play and learn from my mistakes..playing got me into the whole rebuild scenario anyway(blew front 2 apex seals having boost creep at 12psi).i talked to chris(bluet2) at banzai and have most of my questions awnsered..thanks though

J-Rat

iTrader: (2)

Umm.. AN SAFC or standalone is a must for 720s. Too bad an SAFC is a pissy little band-aid fix.

Well, then he needs to find another forum.. At 1000 posts he is too new to be impatient. Imagine how many times I have had to answer questions...

Well, here is where things get sticky.. No engine builder can take a motor, build it, but a turbo on it, and tell you EXACTLY how much fuel it will need. Things are different from motor to motor, and there are only RECOMMENDATIONS. Until the motor is broken in, the boost levels set, and the tune set will you know the true consumption of the motor. Were either one of you experienced in this area, you might know that.

I am not saying anything contrary to Banzai, but facts are facts. What if OP decides to put a GT4088 on the car and run it up.. Then the 720s become vastly inadequate. So what recommendation would you make then?

My recommendation is to set a horsepower goal, and then add 100 horsies to it. Then you have your fuel goals.

Sorry for all the information, maybe I should have simply said.. "Search"...?

phoenix7

or STFU. The OP only asked if he needed to upgrade his fuel after porting the motor. If he planned on changing turbos HE WOULD HAVE POSTED SUCH INFO, if he was planning on adding NITROUS, he would have said so. You're going off on variable he never brought up. If he only modified the motor then BAnzai should ( AND DID) know what fuel was required and THEN Iceblue also threw in the info on the exhaust and other things that might change the fuel requirements. Shut up already guy, you're not going to get your point across because it has nothing to do with the thread.