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car doesn't like 100 shot

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Old Jul 31, 2006 | 04:19 PM
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From: K.C.
Default car doesn't like 100 shot

single fogger, n.o.s. wet kit, 52n 28f jetting.
stock fuel pressure
stock plugs {lil uridium things}
ls4 motor
the car runs just fine on a 65-70 shot {whatever a 46n and a 24f is}
but once it gets jetting up to the 100 shot, it doesn't pull like it should, traps the same mph as the smaller shot.

i don't have a way to log the car to watch knock or fuel to see what it's doing.

just figured id throw this out there to see if anyone has had similar problems. being that there is only a few people spraying the ls4's i don't expect a world of responses.
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Old Jul 31, 2006 | 04:21 PM
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i am pretty sure you need to get a colder plug. you are probably getting detonation with the stock plugs.
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Old Jul 31, 2006 | 05:32 PM
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From: K.C.
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Originally Posted by SMAX
i am pretty sure you need to get a colder plug. you are probably getting detonation with the stock plugs.

thats what i was kinda thinking too. i just wanted to get a second opinion from people, or third opinion.

i really don't feel like spending 2 hours to do plugs on this thing
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Old Jul 31, 2006 | 05:37 PM
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I bet ur running out of fuel
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Old Jul 31, 2006 | 06:05 PM
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What are your plugs gapped at? I tried running mine at .40 to get a little better on the moter, but when I bumped up to the bigger jets they were blowing the spark out. Get a colder plug and bring the gap to where it needs to be would be my first guess.
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Old Jul 31, 2006 | 06:13 PM
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From: K.C.
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Originally Posted by Gimp98TNT
I bet ur running out of fuel

hmmmm, could be it, but i have run the 28 jet before and never had a problem with it.

i don't think it's running out of fuel. i think it might have to do with the plugs.

being that it's the same injectors and pump from an ls1/2 car, i don't see it falling over on a 100 shot, i see it nosing over on a 125. dunno i could be wrong
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Old Jul 31, 2006 | 07:36 PM
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might need to pull some timing
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Old Jul 31, 2006 | 07:52 PM
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What's your bottle pressure?
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Old Jul 31, 2006 | 08:06 PM
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From: K.C.
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im leaning more towards plugs then anything else
gap is stock {stupid i know} pressure is 95-1000 when i make bottle runs.
timing i have no clue actually. it has an agressive all motor tune it, but the timing is well below 30 degrees total advance
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Old Jul 31, 2006 | 08:51 PM
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If it dont like 100, go 150! You'll see if it plugs, gap, advance, fuel or combination
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Old Jul 31, 2006 | 08:54 PM
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Originally Posted by CAT3
If it dont like 100, go 150! You'll see if it plugs, gap, advance, fuel or combination
I think he's running the stock plug's.
If he up's it to a 150 shot won't he pretty much ruin his engine?
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Old Jul 31, 2006 | 09:06 PM
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From: K.C.
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Originally Posted by dannyz
I think he's running the stock plug's.
If he up's it to a 150 shot won't he pretty much ruin his engine?

um yepo!

i seriously i dubt i will evre see anything over 100 shot anyways
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Old Jul 31, 2006 | 09:52 PM
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By the way area 47, how are you getting away with using stock plug's at all?
I was under the impression that with any size shot, even say a 50, that you needed to run colder plug's.
Is this not the case?
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Old Aug 1, 2006 | 09:55 AM
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From: K.C.
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Originally Posted by dannyz
By the way area 47, how are you getting away with using stock plug's at all?
I was under the impression that with any size shot, even say a 50, that you needed to run colder plug's.
Is this not the case?

wrong impression. this is the first car i have had, that i have ever gone above a 50 shot. im not new to nitrous by any means. {7 bottle cars in the past} but i am new to the whole going over a 50 on a v8 car {past cars were imports}
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Old Aug 1, 2006 | 07:38 PM
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Sometimes if the computer sees knock it'll pull timing, netting you the same sort of power with the 100 compared to the 75
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Old Aug 1, 2006 | 07:41 PM
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Change plugs to colder plugs and try again!
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Old Aug 1, 2006 | 09:11 PM
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From: K.C.
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Originally Posted by 02 BLK WS6
Change plugs to colder plugs and try again!

i plan on doing that this weekend
the problem being, I CAN'T SEE THE BACK SIDE PLUGS!!!!!

damn sideways v8.

oh well, 2 hour plug change here i come
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Old Aug 8, 2006 | 12:16 PM
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From: K.C.
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stock plugs were gapped to 36, well the one of them i checked was

put the tr6's in gapped to 32, it works now!

thanks for the help
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Old Aug 8, 2006 | 01:44 PM
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Did you modify the Tr6s gap or did you jsut throw them in? j/w
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Old Aug 8, 2006 | 02:25 PM
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From: K.C.
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Originally Posted by Camaro94SS
Did you modify the Tr6s gap or did you jsut throw them in? j/w

i gapped them all, they were all different gaps. plus a lil bit of antiseize.

the back plugs were a bitch, but done, none the less.


::shrugs::
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