Big shot help
10-25-2008, 11:03 PM
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Big shot help Ok i'm looking for some big shot help or opinions.
My setup is a progressive direct port jetted with boxed 40 jets with a stand alone with 116 octane, the motor is on 93 octane.
I have been running a direct port for years and have always had to spread my jets to get my AFR up. example my 300 shot i ran 32f and 36n and 6psi on the standalone when my motor tune was good.
Right now i have it boxed at 40 and am down to 4.5 psi on the fuel and even takin fuel from my motor tune and i just cant get the AFR to move off of 10.1.
I was thinking i would keep pulling fuel from my motor tune (injectors) untill i have my desired AFR, My thoughts on this is i would end up with more 116 octane than 93 witch should be a good thing. or should i just spread the jets? If I was to spread the jets i was thinking 40f 42n.
If anyone here has ran a direct port jetted at 400+ i would love to here about it.
My setup is a progressive direct port jetted with boxed 40 jets with a stand alone with 116 octane, the motor is on 93 octane.
I have been running a direct port for years and have always had to spread my jets to get my AFR up. example my 300 shot i ran 32f and 36n and 6psi on the standalone when my motor tune was good.
Right now i have it boxed at 40 and am down to 4.5 psi on the fuel and even takin fuel from my motor tune and i just cant get the AFR to move off of 10.1.
I was thinking i would keep pulling fuel from my motor tune (injectors) untill i have my desired AFR, My thoughts on this is i would end up with more 116 octane than 93 witch should be a good thing. or should i just spread the jets? If I was to spread the jets i was thinking 40f 42n.
If anyone here has ran a direct port jetted at 400+ i would love to here about it.
10-25-2008, 11:53 PM
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Why are you running 93? I personally would have it 116 in both tanks.
I liked running my squared (40/40) and pulling from the low pressure side like you are doing. Have you been checking your plugs to make sure it matches what your w/b says?
If that's a match, then I would go a 42 jet, up the low psi and start working back down again. Of course, I'd only start leaning it out with good fuel in the tank. I would leave the motor tune alone if it's dead on.
I liked running my squared (40/40) and pulling from the low pressure side like you are doing. Have you been checking your plugs to make sure it matches what your w/b says?
If that's a match, then I would go a 42 jet, up the low psi and start working back down again. Of course, I'd only start leaning it out with good fuel in the tank. I would leave the motor tune alone if it's dead on.
10-26-2008, 07:49 AM
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Why are you running 93? I personally would have it 116 in both tanks.
I liked running my squared (40/40) and pulling from the low pressure side like you are doing. Have you been checking your plugs to make sure it matches what your w/b says?
If that's a match, then I would go a 42 jet, up the low psi and start working back down again. Of course, I'd only start leaning it out with good fuel in the tank. I would leave the motor tune alone if it's dead on.
I liked running my squared (40/40) and pulling from the low pressure side like you are doing. Have you been checking your plugs to make sure it matches what your w/b says?
If that's a match, then I would go a 42 jet, up the low psi and start working back down again. Of course, I'd only start leaning it out with good fuel in the tank. I would leave the motor tune alone if it's dead on.
I will add 116 in the main tank as well to help keep it on the safe side if there is such a thing lol
10-26-2008, 08:06 AM
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He had some similar issues with my car. Come to find out the nitrous silinoid wasn't working correctly. The noid was getting stuck shut after the initail hit. Thank god it was stuck closed not open. What kind of noid are you using?
10-26-2008, 09:03 PM
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You will only need to make a 330' hit and the kill the motor and coast out the back to get a read on what the tune is doing. After you get it dialed there then you can make some full passes and recheck.
One of my favorite passes was on a test hit with a 38 jet. Shut it down at the 1/8th and still ran a 10 second 1/4 mile.
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10-27-2008, 02:07 PM
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Also This is the first time i have used a progressive and i havent yet ran the noids at 100% so my question is how good are the controllers when we are pulsing the noids? Can the controller keep the AFR close when not at 100%?
During all the runs so far we have only brought the controller upto 50% of the 400.
During all the runs so far we have only brought the controller upto 50% of the 400.
10-27-2008, 06:59 PM
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The next time i run it a plan on a tune up like this
40/42 at 5.5 psi flowing pressure
#10 plug
12* of timming
25% of the shot ramp to 60% in 2.5 sec
Maybe this will get the AFR above 10.1
EDIT... This is Chevpower
10-27-2008, 07:19 PM
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Also This is the first time i have used a progressive and i havent yet ran the noids at 100% so my question is how good are the controllers when we are pulsing the noids? Can the controller keep the AFR close when not at 100%?
During all the runs so far we have only brought the controller upto 50% of the 400.
During all the runs so far we have only brought the controller upto 50% of the 400.
You should just change jets if you are only wanting 50%. That's a lot of risk I would think pulsing the entire track.
10-27-2008, 07:29 PM
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I have about 20 passes where the front end was in the air when the power came in and it blew them off. I have been working with the car everyweek and so far 25% ramp in about 2.0 sec seems to be the only way to get it down the track.
We have ran at BMP, OSW and LMP allthree tracks same results. I am thinking or hoping that its just a hot track and radial thing and cooler weather will fix this lol
10-27-2008, 07:33 PM
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It is about a 2hour job to change the jets witch is why i wanted to jet it at 400 and pull it back with the controller while Paula was driving but if its going to be an issue i'll jet it back. Cant have her spraying a 400 every pass lol