poping
poping on the 75 pills it pops/breaks up on n20, pulling 4 degrees
100 pills it pops/breaks up pulling 5 degrees, but i stayed in it for about 3 seconds the other night and a huge explosion happened, no1 behind me but im pretty sure it fireballed out of the exhaust, so it had raw fuel correct? does thie mean i need more bottle pressure or im blowing out the spark?
the plugs appear to be a little rich, timing marks look good bottle pressure was probably near 800, and the more i spray it doesnt get any worse, and im sure the bottle pressure is dropping some...am i right up to here?
its most likely the spark? i just cant believe im running out of spark with that small of a shot, i have a msd coil, mallory 685 ignition box, new stock 7mm ac delco plug wires, and brand new ngk tr6 gapped to .030
lmk what yall think,
for other supporting mods i have a walbrough intank pump, the popping is steady from 3000-6800, i know the retard is working, and it still did it with 100 shot n20 and 125 fuel pill
100 pills it pops/breaks up pulling 5 degrees, but i stayed in it for about 3 seconds the other night and a huge explosion happened, no1 behind me but im pretty sure it fireballed out of the exhaust, so it had raw fuel correct? does thie mean i need more bottle pressure or im blowing out the spark?
the plugs appear to be a little rich, timing marks look good bottle pressure was probably near 800, and the more i spray it doesnt get any worse, and im sure the bottle pressure is dropping some...am i right up to here?
its most likely the spark? i just cant believe im running out of spark with that small of a shot, i have a msd coil, mallory 685 ignition box, new stock 7mm ac delco plug wires, and brand new ngk tr6 gapped to .030
lmk what yall think,
for other supporting mods i have a walbrough intank pump, the popping is steady from 3000-6800, i know the retard is working, and it still did it with 100 shot n20 and 125 fuel pill
Does this only happen on n2o and runs fine when not on?
Have you checked your O2 sensor? If bad, (or just hanging out) your comp. will think it is running lean and compensate by adding more fuel. Which is why I asked the first question.
Have you checked your O2 sensor? If bad, (or just hanging out) your comp. will think it is running lean and compensate by adding more fuel. Which is why I asked the first question.
on motor it runs phenominally, 11.9 cam only lt1...
no my opti is great, since i installed it about 3 months ago, its a brand new ac delco, ive had the best luck with it after 9 others.......
fuel filter and pump were changed at the same time about 5 months ago, always use premium shell gas...
i was told to gap them closer to see if it was spark related but it seems to not gotten any better, actually seems a little worse then when they were at .37
no my opti is great, since i installed it about 3 months ago, its a brand new ac delco, ive had the best luck with it after 9 others.......
fuel filter and pump were changed at the same time about 5 months ago, always use premium shell gas...
i was told to gap them closer to see if it was spark related but it seems to not gotten any better, actually seems a little worse then when they were at .37
if that's happening (blowing out the spark) I'd say it's a pretty weak spark. Which also holds if opening the gap made it worse. Any way of checking the MSD and 685 box? Usually the ignition boxes go out, not down but the MSDs can go down since it's voltage induced electronics.
no, i went from .037 to .030 and it seems to have gotten a little worse.....
the msd been on there for about 5 months, the 685 was added wit the n20, it has the priginal coil wores run into it and new ones to the coil, so it has to work fine, ive undone the solanoids and checked that its pulling timing, and it is, and the window switch option is working also.
the msd been on there for about 5 months, the 685 was added wit the n20, it has the priginal coil wores run into it and new ones to the coil, so it has to work fine, ive undone the solanoids and checked that its pulling timing, and it is, and the window switch option is working also.
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Verdad Gallardo Ive got the TNT F2 kit.......Big cam and supporting bolt-ons, racetronix intank fuel pump, FAST 36# injectors, taylor 10mm wires, tr6 plugs @ .035, 3800 fuddle 2.2 STR, 3.42's.....runs 11.8's all night on motor....but the nitrous just goes crazy everytime i try it. I cant seem to get a clean pass on the juice!
is it braking up like i said mine is? or is your cutting in and out? how big of a shot? have you stayed in it a whole run? and is it doing this from the beginning to the end or just half way through the run?
ive got the 150 pills in it right now.....its doing both. Ive never stayed in it the whole run for fear of something blowing up lol. IT happens right after the launch.....in/out and then throws fire out the exhaust
IMO, the only thing either of you can do is start back at the basics. Look at the air/fuel mixture and fuel pressure. One of them is off.
Daniel, I didn't see anything about injectors on yours but either way, they may be over their duty cycle limits. The a/f will tell you whats going on.
Both of you have some pretty impressive numbers on motor.
Daniel, I didn't see anything about injectors on yours but either way, they may be over their duty cycle limits. The a/f will tell you whats going on.
Both of you have some pretty impressive numbers on motor.
thanks also...
i agree, i have stock injectors but they shouldent be above 80-85%, its cam only, stock heads only making about 330 or so, they are 28's from the factory
also it seems that when i run it at the track it doesnt break up as bad, but out on the street when the stall flashes to 5500 6000 it breaks up bad....hmmm
also HSW is according to 950psi from what i hear? on the book it says 1050, eitherway, it should just be a little rich, not popping...
if i had access to a fuel pressure gauge it check it, with work i never have time and no1 is open sundays...last time i checked it at idle it was perfect lt1 pressure 42 vac. on, with the vac line off 47....didnt get to check under a load, and have no idea how to check it on the n20....
i agree, i have stock injectors but they shouldent be above 80-85%, its cam only, stock heads only making about 330 or so, they are 28's from the factory
also it seems that when i run it at the track it doesnt break up as bad, but out on the street when the stall flashes to 5500 6000 it breaks up bad....hmmm
also HSW is according to 950psi from what i hear? on the book it says 1050, eitherway, it should just be a little rich, not popping...
if i had access to a fuel pressure gauge it check it, with work i never have time and no1 is open sundays...last time i checked it at idle it was perfect lt1 pressure 42 vac. on, with the vac line off 47....didnt get to check under a load, and have no idea how to check it on the n20....
Launching!
Joined: May 2006
Posts: 217
Likes: 0
From: Huntington Beach CA
Generally popping in the exhaust is a rich condition, with 800psi of bottle pressure this is a good possibility. Try getting the bottle pressure up some and if it is still doing it see if you can get it on a dyno to get an AF ratio. If that is not possible make a run and shut the car off and pull the plugs. If you idle or drive on the plugs you can't get a good reading.
done it, they look rich but not terrible...
http://s21.photobucket.com/albums/b2...gAnch=imgAnch6
http://s21.photobucket.com/albums/b2...gAnch=imgAnch8
http://s21.photobucket.com/albums/b2...gAnch=imgAnch6
http://s21.photobucket.com/albums/b2...gAnch=imgAnch8