Re: Resurrecting the Rambler
Test session #2 is complete now at the Coles County 8th mile. Had ideal weather conditions, even a slight tailwind of 5-10 mph when I started out. What a change from last time with the massive headwinds.
Leaving the shift points at 4500, the only change I elected to make from the last session was to set the timing different and adjust the fuel mixture. I actually retarded the timing a little because I was told it might be too far advanced where I had it. OK, we'll try it out.
Run1: Right at 70 degrees outside, car water temp was at 165, a little sluggish off the line and since it was a single pass, I thought I heard the tires scrunch some on the leave.
Remember that I'd already found out the engine needs to be fairly hot to do well, being in it's factory stock state, so I drove it around some in the pits to get things flowing before going up to the line, but it wasn't quite up to it's good old operating temps.
11.05 @ 63.21 60'= 2.44
Already way ahead of the best run it had made before by 2 tenths. What would some of you give to gain 2 tenths ? Lucky for me, it cost nothing. I'm sure that will change from now on.
Run 2: 68 degrees out, car temp up to 180. No changes to anything else.
10.98 @ 63.37 60' = 2.44
Ye-haw! We've cracked the 10's now! The sobering fact is that there's only 1.94 seconds of improvement needed to hit the 8th mile index for T/SA.
Run 3: 67 degrees, sun going down now. Wind calming. Practically hot-lapped the car, only gave it about a 10 minute rest before heading back up. Really felt like I had a good burnout this time, and it bears out on the time slip.
10.98 @ 63.36 60' = 2.39 Definitely a little harder leave, I could feel it in the seat of the pants. I don't think there was any spin at all on this one.
Run 4: 64 degrees, twilight, car at the usual 180 temp. No other changes at all.
The main thing I noticed being different during these runs was that it seemed to be pulling harder in high gear than the previous test session. Weather conditions? Timing change before this session?
10.97 @ 63.36 60' = 2.43
Best ET so far. We'll build from that.
Man, this thing is a real consistent bracket beast if you throw out the first run every time you go to the track! MPH stays the same, and it's within 1 hundredth on three straight runs. Reminds me of the old glory days with one of my other deadly consistent AMC cars.
I'd like to get this AMX to the 1/4 mile now at St. Louis or Indy and get some real-world data from that, but it will have to wait for a couple weeks. Stay tuned.
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Brian Saunders Lerna IL
'79 AMX T/SA 3790 currently being resurrected
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