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Old Oct 23, 2009 | 04:37 PM
  #21  
Chris@NitroDaves
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Originally Posted by TA1364
So pull 6 degree total?

After looking at the graph I might be able to go to the 100F. I'll get the graph up on here a little bit and see what you think.

Correct you will be pulling 6* of timing. Also one way to help do away with the lean spike would be to shorten the fuel hose up at least 4-6in. Also we like to see the AFR around 11.8
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Old Oct 23, 2009 | 05:21 PM
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Originally Posted by john563
the heads aren't the greatest,but it does have a few pluses on its side..
Please explain.
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Old Oct 23, 2009 | 05:22 PM
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Originally Posted by Chris@NitroDaves
Correct you will be pulling 6* of timing. Also one way to help do away with the lean spike would be to shorten the fuel hose up at least 4-6in. Also we like to see the AFR around 11.8
I don't know **** about nitrous and timing...but 6 degrees seems like alot for only a 100 shot doesn't it? I had a 150 shot wet kit and I'm pretty sure we only had 2 degress pulled for mine and had no issues with detonation. I could be wrong tho lol
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Old Oct 23, 2009 | 06:16 PM
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Originally Posted by squale iii
I don't know **** about nitrous and timing...but 6 degrees seems like alot for only a 100 shot doesn't it? I had a 150 shot wet kit and I'm pretty sure we only had 2 degress pulled for mine and had no issues with detonation. I could be wrong tho lol
I was thinking the same thing..I thought rule of thumb was 2 deg for every 50rwhp,so wouldn't 4 deg be enough.. I'm thinking of adding a 100 shot and thought 4deg would be enough,but I guess not..
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Old Oct 23, 2009 | 06:59 PM
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You're better off pulling more timing to be safe. That's common sense. You guys are gonna blow your **** up.
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Old Oct 23, 2009 | 09:42 PM
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I really dont think the knock sensors were reading real knock. They do this off the bottle and on my old car too which was n/a. I think its just a 98 problem.
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Old Oct 24, 2009 | 12:00 PM
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Added graph on first post
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Old Oct 24, 2009 | 01:11 PM
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I had some knock on mine..Replaced the knock sensors and all was good
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Old Oct 24, 2009 | 06:19 PM
  #29  
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I replaced the knock sensors from a different year and sealed them well too. FYI I sprayed my car with a 150 hit today twice and it was sick. Autolite 103's and a lot of timing taken out.

Honestly, I haven't heard one benefit of having a '98 LS1. Apparently the heads aren't as good (who cares) the rod bolts are weak, the PCM isn't as user friendly for tuning, and the oil passages on the '97-98 blocks aren't as efficient as later years. Plus it obviously doesn't come with a LS6 from the factory.
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Old Oct 26, 2009 | 10:24 AM
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So....should I put the 100f in or leave it alone?
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Old Oct 26, 2009 | 02:57 PM
  #31  
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yes, mid-high 11's afr is ideal. if your a little rich then go ahead and run the slightly smaller fuel jet. you could just put the 125N jet in
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Old Oct 26, 2009 | 03:09 PM
  #32  
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Originally Posted by LT1 Trash
yes, mid-high 11's afr is ideal.
I disagree but maybe thats why my **** is so slow.
We run it around 13:0 A/F

But we check every plug every pass and have different jets in most holes, different timing in most holes and different fueling in most holes. Hell I dont think we have 2 Cyl.'s that are the same.
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Old Oct 26, 2009 | 04:13 PM
  #33  
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My car is way slower than yours and a much different setup.
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Old Oct 26, 2009 | 04:37 PM
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Originally Posted by TA1364
My car is way slower than yours and a much different setup.
I agree and was just disagreeing with your "Ideal" A/F ratio.
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Old Oct 26, 2009 | 07:34 PM
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So how much is being left on the table with the 125f jet in?
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Old Oct 26, 2009 | 07:53 PM
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Originally Posted by ATVracr
I disagree but maybe thats why my **** is so slow.
We run it around 13:0 A/F

But we check every plug every pass and have different jets in most holes, different timing in most holes and different fueling in most holes. Hell I dont think we have 2 Cyl.'s that are the same.
hahahaha. gotta love this forum. Suprised more **** doesnt get blown up.
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Old Oct 27, 2009 | 10:15 PM
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Originally Posted by TA1364
So how much is being left on the table with the 125f jet in?
I would say a good 10-15 hp. Youre fattening it up top. You want it to be clean and clear but not on the ragged edge. Put the 100f pill in and take 2* out. Youll be golden boss. We were jacking around with the pills in my dads car and ended up going too fat. You guys all know what happens next
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Old Oct 28, 2009 | 11:47 AM
  #38  
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just clean up the KR issue and pop in that 100 Fuel jet or quit dicking around and give your car the 150 jets it deserves. I use to spray my vette in first gear and usually could get traction.
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Old Oct 28, 2009 | 03:25 PM
  #39  
Chris@NitroDaves
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Originally Posted by squale iii
I don't know **** about nitrous and timing...but 6 degrees seems like alot for only a 100 shot doesn't it? I had a 150 shot wet kit and I'm pretty sure we only had 2 degress pulled for mine and had no issues with detonation. I could be wrong tho lol
Originally Posted by john563
I was thinking the same thing..I thought rule of thumb was 2 deg for every 50rwhp,so wouldn't 4 deg be enough.. I'm thinking of adding a 100 shot and thought 4deg would be enough,but I guess not..
You are correct 6* is a little much to be pulling for timing on most vehicles for a 100hp shot. In this case with the KR doing what it was it would have been benificial for this individual to pull 6* of timing to help get rid of the KR.

If the car has stock timing on most applications for a 100hp shot you might not have to pull any timing but on the other hand some cars you might have to pull up to 4*. It differs from vehicle to vehicle.
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Old Oct 29, 2009 | 10:59 PM
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How about 4 degrees pulled on a 125 shot? Im thinking about either going to 125 nitrous jet or 100 fuel jet. Maybe get a few more mph.
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