Hey Guys was wondering if one of Monte's N.O.S classes was comimg to the Seattle, WA area? If not is possible to purchase a class on dvd? Interested in the topic of no E.T. gain with increased N.O.S jets and greyish color on the plug ground strap area. Thanks Matt

Yes, we are going to be going to Seattle.......probably sometime in March.........Send me an email and I'll keep you up to date........ afxplymouth@sbcglobal.net

Yes all the fuel filters were just changed in both fuel systems.Run 2 seperate systems for N.O.S and engine. Fuel P.S.I for nos is 6 psi, bottle psi is 950 psi. The car ran 10.77@122 on motor and 10.23@128.48 on nos. 1st ran 150 shot to get 10.23 and then bump up to 200 shot and still ran 10.23. My plugs come out that greyish color all over the end of the plug.Looking forward to attending Monte nos class. Thanks Matt

Did you set the feul pressure flowing or dead headed? Did you readjust when you switched your jets?Makes a big difference.What system are you useing?

No I did not reset the fuel pressure, It's a NitruosWorks up to 200 H.P. kit. I Will recheck the fuel psi. Thanks Matt

There is not near enough info in this post to help you at all. I would need to know something about the motor. What plug you run, what fuel you run, the jets you had before, the jets you have now, your base timing, how much you retarded the timing etc. And not what "HP" jets you had in there, that means nothing to me. I would need the actual jet numbers.

Monte

Sorry, Motor is 383/496, .060 12.20/1, 0 deck height with a .039 felpro head gasket. Fully ported Stage VI 2.14/1.81 not max wedge,Hughes cam solid lifter int 0.610/exh 0.619, int 268@.050/exh,272@.050, 105 degree centerline. Cam is degreeded in at 2 degree's retarded to 105. Pistons are forged Keith Black pistons with.025 top and.019 second ring end gaps. Ported Edelbrock single plane victor intake. Msd digital 6 box with 6 degree's retard when n.o.s is on, Timing Locked down at 34 degree's all the time.Pro-systems 1000cfm 4150 style carb with 84 pri and 92 sec. Was using champion c61yc plugs gapped at .035. Fuel is VP110. Nitrous Works plate system with 5.5 psi of fuel for nos 150 shot, nos jet was 73 and 63 fuel jet car ran 10.23. 200 shot nos jet 81 and 78 fuel jet still ran 10.23. Car is a 70 Dart weighing 3400 pounds with me in it, 727 10" 3800 Turbo Action converter,83/4 with a 4.56 35 spline, moser axles and richmond spool,30.0x13.5 MT ET street tires, 10 point Chris Alston cage, double adjustable ladder bars with housing floaters on mopar 002/003 springs and frame connectors.Engine fuel psi is 8 pounds at W.O.T. Mallory 250 pump and matching regulator and filter all new. Nos fuel system is 140gph pump with matching regulator and filter.NOS bottle psi is 950 psi.This is with no air cleaner and 2" primary headers and open exhaust.ET was 10.23@128.48,1.41 60ft,6.45@106.78 1/8th on NOS , ran 10.77@121.83,1.50 60ft, 6.81@100.41 1/8th on motor...Thanks for your time Matt

Well, your first tune up had a 10 pill spread on the jetting. I don't have a lot of Nitrous Works numbers, but what I do have, shows that to have a N/F ratio of 4:78.1, extremely rich. You also had a little too much timing. 28* was too much for that amount of nitrous, but you got by with it, because the tune was rich. Now your second tune only had a 3 jet spread and the N/F on that was around the same ratio, but you don't say you pulled anymore timing and the plugs looked gray. I suspect it did not pick up with the second tune, because it was overtimed and detonating the motor. You should really be careful with this motor on spray. You have KB pistons with extremely tight ring gaps. If those are hypers, you are asking for trouble. If they are indeed forged, the gaps are still tight.

Monte

Monte, thanks for your help. Looking forward to attending your NOS class. Matt