13:1 150 hit and pump gas
#4
9 Second Club
iTrader: (4)
Yeah I do. And honestly I'm pretty amazed that you didn't nip a plug on pump gas with that much timing and compression honestly. I know every setup is different but I can only get roughly 17* in my H/C/I Formula on a dry 175 shot with a 11:1 static compressoin ratio and pump gas. Anymore and the timing mark moves down the strap.
#5
Yeah I do. And honestly I'm pretty amazed that you didn't nip a plug on pump gas with that much timing and compression honestly. I know every setup is different but I can only get roughly 17* in my H/C/I Formula on a dry 175 shot with a 11:1 static compressoin ratio and pump gas. Anymore and the timing mark moves down the strap.
#7
Launching!
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1. are these brand new plugs?
2.were these pulled right after the pull?
3. how did you do the pull?
4.did you drive on these plugs before or after the pull
and you likely need to move to a num. 9 plug
2.were these pulled right after the pull?
3. how did you do the pull?
4.did you drive on these plugs before or after the pull
and you likely need to move to a num. 9 plug
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#9
Launching!
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lol i like your 3rd comment, but you cant pull any useful data from that plug. you need to put a fresh set in with as little idle time as possible do your burnout, make a full pull and shut the car down immediately otherwise like your plug above its just about useless.
#13
8 Second Club
iTrader: (16)
I'm 12.6:1... with a HUGE Cam(25x/27x @ .050)
on 93 octane pump gas
and a 350 shot
I use a #9 plug
and I run about 15* of timing(27 on motor)
Wideband see's around 12.8:1
no problems....
you probably need a colder plug...
you probably need to pull more timing.
30* is a lot on motor for an LS of any kind....
I would start around 26-28 on motor, dial out 4* for Nitrous to start, and see what the plug looks like
theres also no way to tell if your motor is knocking at all without seeing down into that plug...need to cut off the threads with a dremel and look for little metal sprinkles down on the lower section of the ceramic.
on 93 octane pump gas
and a 350 shot
I use a #9 plug
and I run about 15* of timing(27 on motor)
Wideband see's around 12.8:1
no problems....
you probably need a colder plug...
you probably need to pull more timing.
30* is a lot on motor for an LS of any kind....
I would start around 26-28 on motor, dial out 4* for Nitrous to start, and see what the plug looks like
theres also no way to tell if your motor is knocking at all without seeing down into that plug...need to cut off the threads with a dremel and look for little metal sprinkles down on the lower section of the ceramic.
#15
9 Second Club
iTrader: (4)
Also have to take into consideration that the MSD controlling the coils may result in a slightly different value in the interface to get the same result. In the end the timing in the box is just a number. Up/Down until the plug looks happy!
Altitude plays a huge role in this much timing advance also.... thin air doesn't burn as well!
Altitude plays a huge role in this much timing advance also.... thin air doesn't burn as well!