jetting and plugs
jetting and plugs Okay i went to a direct port i have the 24 pills for the nitrous and what size should i put in for the fuel i run 60 psi of fuel pressure. I have 14 size pills in the fuel side now. I pulled the plugs out and they were really white and a kinda gold color but wiped of some of the white. I run about 11.5.1 or 11.1 cp with a mix of 93 and 110. Runs like a beast. But i would like to know if i am running to lean cause of the color of the plug? I run about a 160 shot. What should my plugs be gapped at for this. Also is the ngk tr6 the best choice or should i go with a colder plug but still want to run good n/a. thanks for all the help
Last edited by flippincamaro; Aug 1, 2005 at 09:09 PM.
Well, not sure on DP Jetting but will see what I can find. The plugs sound normal, slight brown is ok. And as long as the white porcelain isnt powdery your not that lean. No speckles, is safe aslo. At over 160 I would say its safe to go to TR 7 plugs, gapped according to shot size, for 200, I go .030" and work from there. TR 6 for the current shot, at .032-35" should be fine, and still run killer NA.
*EDIT* With those jets I am coming up with 13 fuel jet for the 24 Nitrous. Placing you 26hp per cyl, and roughly 200 crank shot, 160 wheels, is that about right?
*EDIT* With those jets I am coming up with 13 fuel jet for the 24 Nitrous. Placing you 26hp per cyl, and roughly 200 crank shot, 160 wheels, is that about right?
Last edited by CAT3; Aug 1, 2005 at 10:56 PM.
according to the nos book the 24 pill is a 20per cyclinder (SP) Well the prob is is that it was powderie looking and rubbed off in my finger. There were a few speckles on the white part of the plug. I changed the fuel side to a 28 since that is all i had to see what it does. It didnt hit nearly as hard but i could see why cause how big the fuel side was. I am thinking i need a 18 or 20 for the fuel side with the 24 nitrous pill. Does this sound right? Also that is at the crank. So will the tr7 gapped at about .32 work well with the 160 shot and n/a and not lose power? Thanks man for the help i just dont want to ruin this engine YET. 
EDIT: Would the tr7 at the 160 shot gapped at .32 be my best bet or would you stay with the tr6s gapped at what for this shot thanks
EDIT: Would the tr7 at the 160 shot gapped at .32 be my best bet or would you stay with the tr6s gapped at what for this shot thanks Last edited by flippincamaro; Aug 2, 2005 at 12:22 AM. Reason: change
For that size shot its a coin toss, so I would stay 6's.
What fuel system are you running?
White powdery is lean. Speckling is detonation. If your fuel system isnt up to it, and it sounds like that may be an issue, the biggest fuel jet isnt going to help you out. Need to know type/model pump, running the DP off the rail/tank pump, or dedicated fuel system.
What fuel system are you running?
White powdery is lean. Speckling is detonation. If your fuel system isnt up to it, and it sounds like that may be an issue, the biggest fuel jet isnt going to help you out. Need to know type/model pump, running the DP off the rail/tank pump, or dedicated fuel system.
I have two inline walbro 255s running a aeromotive reg with a nitrous fuel port on it set at 62 psi. Why is it detnating? How can i fix this problem thanks man for all the help not to familiar with the whole spray deal.
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Holy ****, gapped at .045"! GD, that could very well be most your issues right there! Damn thats a huge gap for nitrous and for TR6. General rule of thumb, dont gap up or down more than .005 from factory setting which for a TR6 is .035" IIRC.
I run my TR6' on a 175 shot at .032" seemed best from my trial and error.
Fuel system sounds adequate.
Detonation: Too much Timing could be an issue, oil in the intake tract which LS1's are famous for, and running too lean.
Are you running a stock PCM? What are you tuning with? Any Widebanding done?
I run my TR6' on a 175 shot at .032" seemed best from my trial and error.
Fuel system sounds adequate.
Detonation: Too much Timing could be an issue, oil in the intake tract which LS1's are famous for, and running too lean.
Are you running a stock PCM? What are you tuning with? Any Widebanding done?
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I'd say it's the gap. But it could be the fuel jets also along with the timing. Too many things. What's ur timing set at? You could reduce your timing to not run so lean. Should help out alot. But gap your plugs to what cat said.
Reducing timing will not richen up the afr any appreciable amount. That fine tuning of ignition vs afr is very minute at best, on a more severe problematic setup sure it can make a big change, but thats just a bandaid for something not being addressed.
Flippin:
If you read through the above posts, and answer the questions we'll be able to help you a lot easier.
Flippin:
If you read through the above posts, and answer the questions we'll be able to help you a lot easier.
Thanks guys for all the help. I am not sure what the timing is set at i have a mail order tune done for the heads and cam i have. I didnt get it tuned for spray cause at that time i didnt have the spray on it. I will ask jesse the guy that did the tune what the timing is set at. I will gap my new tr6s at.33 i guess sounds good. I still have the stock computer but like i said it is mail order tuned. Also more than likly i need the 18 or 20 pills for the fuel right with the 24 nitrous pills correct? When i pulled the manifold off today putting new headers on the inside of the manifold was white. What does this mean? I know all my other cars the manifold was black. The white just rubbed off. Thanks guys for all the help
