My turbo build
08-27-11, 10:13 PM
#26
Love your project! It's almost identical to what I'm cooking up. A lot of the same parts, except I'm using an FC turbo.
Since you're not using a double pumper carb, you need to lengthen the arm on the accelerator pump so that it continues to push extra fuel during the opening of your secondaries. That lean spike you're getting when they open is very dangerous and could destroy your motor in a hurry! You will probably also need to enlarge the jet in the accel pump nozzle for a stronger shot.
Since you're not using a double pumper carb, you need to lengthen the arm on the accelerator pump so that it continues to push extra fuel during the opening of your secondaries. That lean spike you're getting when they open is very dangerous and could destroy your motor in a hurry! You will probably also need to enlarge the jet in the accel pump nozzle for a stronger shot.
08-28-11, 12:08 PM
#27
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Love your project! It's almost identical to what I'm cooking up. A lot of the same parts, except I'm using an FC turbo.
Since you're not using a double pumper carb, you need to lengthen the arm on the accelerator pump so that it continues to push extra fuel during the opening of your secondaries. That lean spike you're getting when they open is very dangerous and could destroy your motor in a hurry! You will probably also need to enlarge the jet in the accel pump nozzle for a stronger shot.
Since you're not using a double pumper carb, you need to lengthen the arm on the accelerator pump so that it continues to push extra fuel during the opening of your secondaries. That lean spike you're getting when they open is very dangerous and could destroy your motor in a hurry! You will probably also need to enlarge the jet in the accel pump nozzle for a stronger shot.
08-29-11, 03:59 PM
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07-14-12, 12:03 PM
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hey guys so I need some help/ advice from the first gen gurus. I'm still having tons of problems when I try to go full throttle in my 7 currently it's set at 15 pound. in primary's it holds 15psi no problem. when I try to open the secondaries it starts sputtering and will not accelerate. when I try to use secondaries my AFR is 11.8 so that leads me to believe it isn't a fuel problem. Im at Wyotexh right now and talking to our hi performance instructor he says that my turbo is too close to the engine creating too much heat for the turbo to handle. which I don't believe. it makes a horrific shrieking noise when the secondaries open aswell can anyone help!!!
07-14-12, 12:51 PM
#31
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With the secondarys open what does your boost gauge do? I would check the waste gate for good tension and check your spark advance, And what is your fuel pressure at?.... just throwing ideas out there from similer issues.
Last edited by Redpro; 07-14-12 at 12:59 PM.
07-14-12, 01:04 PM
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redpro: when I go to secondaries the boost pressure remains the same. the fuel pressure at wide open at 15 psi is 21psi. I am going to put a video of what is happen up with in a few days it's been raining all week so the next nice day I'll take it out. I though about accelerator pump but if I try to ease into the secondaries it does the same as snapping them open. ooh and at full throttle its running full advance
07-14-12, 01:37 PM
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redpro: when I go to secondaries the boost pressure remains the same. the fuel pressure at wide open at 15 psi is 21psi. I am going to put a video of what is happen up with in a few days it's been raining all week so the next nice day I'll take it out. I though about accelerator pump but if I try to ease into the secondaries it does the same as snapping them open. ooh and at full throttle its running full advance
Originally Posted by Directfreak
I agree. Should be fine.
I think once you find out where the noise is coming from you will if you will fix the shutter... I can't help to think the two are related to the same thing ...very intressting oh love the build cant wait to do the same.
07-14-12, 02:40 PM
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thanks it was a pain but what rotary isn't. it's definitely worth it though. hopefully tomarro I'll have a video up ao u guys can see what I mean
07-14-12, 08:55 PM
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how did i miss that good point Directfreak if the timing is to fast it will cause that to... try half retarded timing and see how it acts your going to have to change your idle and air to fuel a bit .. i hope your not using the vacuum advance.
Last edited by Redpro; 07-14-12 at 09:01 PM.
07-14-12, 10:09 PM
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kk I'll try that. no I pulled the vacumn advance so it's fixed in full advance I'll try retarding it most of the way and put a video of what happens how far retarded should it be?
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