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Discussion Starter · #1 ·
Went to Shadyside this evening. After making a motor pass of 5.449 at 126.45 we loaded the bottle and tried a NOS pass. At 5.5 PSI fuel and 950 on the bottle we ran a 5.185 at 134.07 MPH with a 1.169 sixty ft and a 3.389 three thirty time. Car actually shifted at 7600 RPMs even with a 7000 chip in the shifter and went thru the traps at 7550 RPMs. I forgot the darn downloader so I couldn't download or print any of the info, had to replay back the tach. I changed the shifter to a 6800 chip and made another pass and it shifted at about 30 ft when the car got up on the converter. It shifted with the front end in the air and it just unloaded the tires so I lifted. Everything went OK so now I got to decide what to do next. I think I'll change the tune up to a smaller set up and run at Greer Sat with that. Maybe try a 100 HP set up and see what that does. The Z Max race is next Sat so I need a workable 5.30 tune up to race with. At least the NOS worked this time.......LOL.
 

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Sound's good to me. So how did that first pass feel? Stronger or about the same? I would assume you could tell it was least a X.30 et.
 

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Discussion Starter · #5 ·
Nice pass. You said you gonna try 100 shot next time, how much were sprayin this pass?
I was running a SpeedTech difuser plate with 73 jets at both ends. They say that is about a 200 HP set up. I have gone down to a 65 jet now which they say is about a 150 HP set up. There was still alot more power in the 73 set up but I didn't want to waste time tuning on it. That run was fast but it was fat as heck. I'll work on this smaller set up and try and tune it to run at it's true potential. RM
 

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Nice going Joe. Remember Wayne Moten with the Bad Company camaro. He ran the juice on a timer to get just a few tenths. You'll figure out the combo for 5.30's. And you'll always have the button for the top end. Good luck. Dave
 

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Discussion Starter · #7 ·
Remember Motens car? I built it......LOL. He brought me a stock Camaro with slapper bars. I did the ladderbar coil over back half and cage, narrowed the rearend and tubbed it in my little garage at home......LOL. I did all the NOS work on it as well as designing the timing system. I even got to building my own NOS plates. That was in 1978 and alot has changed since then......LOL. Here's a pic of that old rag sitting in my driveway about 1980. Remember the Dragons on all my cars back then? You can see my old logo on the roof above the quarter panels. Dragon with balls race cars.......LOL. RM
 

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Those old Centerlines look mighty good to me. It's hard to believe how fast time goes by.

You may have more experience with nitrous than I do but a few thoughts. I have found it hard to pick up a precise amount with nitrous like you need to do. I have run 53 jets all the way up to 78 jets in plate systems- foggers and the difference is not as much as one would think. I have run engine off the line and then activated the nitrous in high gear, I have run nitrous off the line and then shut it off in high gear. Needless to say the gains are much greater when the nitrous is used off the line.

Looking back, a window switch for activation-shut off was probably the easiest to tune for a specific amount of et. Put in a rpm module for activation and another rpm module to shut it off. I always shut it off about 400 rpm before the shift so it wouldn't drive through the converter. I never did try a progressive controller so I cannot comment on how they would work in this situation. I ran Q8 dragsters and I had mine to come all in 400 rpm above my two step chip. I ran a fogger and it came in much smoother than the plates. With the plates sometimes the car stuck and sometimes it blew the tires off. Traction was much better with the fogger.

Just some thoughts, hopefully helpful, from previous experience. With different weather conditions you will have to find different tunes cause what works now will not work in the middle of August. Best of luck, I enjoy reading your posts. When I raced I had to do it all myself, like you. I had money for groceries or racing, my family put eating first.

One thing has been bothering me about the head work you had done. The car should not be slower or even the same. I hold RFD in the highest of regard, I think that is who did the work? I cannot figure out why you did not have a little gain at least. The only thing I can think of is valve job we did a few years ago. I changed a 45 degee seat to a 50 once and the car slowed down even though the flow bench showed gains. The 60 ft. was slowed and the lag at gear change was worse. We changed it back and the car came back to the old times. Your does not make any sense. Not being critical just trying to figure out why it didn't pick up even a small amount. Again, if this is not appropriate PM me and I will delete.

Billy
 

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Discussion Starter · #9 ·
Thanks for the thoughts Billy, they are appreciated. I ran the bottle with Motens car because he read about the stuff and that was all he could afford to try and run Pro Gas as it was called back then. We were banned from every NHRA track in the nation and got death threats for being sorry dog cheating SOBs for running it too. I called NOS every Monday it seemed like asking questions and telling them what we did that past W/E......LOL. I have no experience with it since then and am dumb as a rock to what goes on today........LOL, Learning fast though. I am attempting to turn it on at .010 after the brake releases then shut it off down track. I am afraid trying it coming on after the initial hit will just blow the tires off. I tested again yesterday with a 65 jet turn up and at 1.2 to 1.3 into the run the thing just blows the tires off, RPMs jump up to 8000 or so, it shifts during that time then just runs down the track mostly on the converter.......LOL. Going to work on my wheelie bars now and try to help that issue. Hope to test again Thursday because the Z Max race is Saturday. If testing Thurday still results in blowing the tires off I will try turning it on downtrack though. Thanks again. RM
 

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If you nitrous solenoid is located at the plate you might try putting about a 3 ft line between the solenoid and plate to soften the hit. The fuel solenoid is fine attached to the plate. The only reason I can figure out why the fogger hit so much softer is that all the lines have to be filled first, leads to a little delay in distribution. Best of luck. Billy
 

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Discussion Starter · #11 ·
I'll keep the longer line in mind. That could come in handy. On the heads I am with you. I did the homeowrk and Curtis is the man. I checked his numbers on our flow bench and they matched up perfect so they do flow better. I plan to call him and ask what he thinks about it but haven't yet. I have added jet, took jet away, played with the timing and the car is a solid 3 to 4 MPH slower than it was and all that was done is porting the heads and whatever grind he put in them. I had a 50 degree intake and 45 exhaust but don't know what he used. He did say he sunk the valves a little and wanted to know if I wanted the heads milled to maintain the compression. I passed because I was pressed for time and he was a couple weeks overdue already. I'll totally freshen the motor after this year so whatever I find I don't like, I'll correct. RM
 

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A lot of good memories back then. Trying to make some now that I can rmrember later. That is, if I have a memory. hehehehehe Dave
 
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