One thing led to another. Build thread.

jasonc said:
What's the max boost your seeing, (s488?), also in the pic I saw it looked like a
T6 housing? If you don't want to say understood. Congrats on the 8sec pass, yall are making it look easy.
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Boost (green) vs drive (red)

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jlibert said:
Spun, got out of the groove, spinning went to hopping, but I stayed in it and we got a decent number. Single turbo, fuel only, 1500us. The weather was good today, so that was a plus. Cory is already working on solutions to keep the chassis working as we add power.

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How does it steer or feel with the manual rack after that pass?
 
jasonc said:
How does it steer or feel with the manual rack after that pass?
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It never felt out of control. It responded well to steering input, but you arent going to steer it with one hand. When it hooks, it takes very little input. But anything with 1000+ hp that is spinning that far out is going to be a handful.
 
1st pass I loaded a tune that was limited to 4500 rpm. My shifter was set to shift at 4700 rpm so it never shifted out of 1st. Les was not home, no way to get another tune until later.

second pass we backed down shift points from 4700 to 4200 and ran again just to make some passes with the rpm limited tune. Went 5.55@ 125 8.78 at 148 out of rpm on the top end. Had a pretty good bounce at lockup that we need to work on. 1.28 60'

3rd pass we softened up the compression 4 clicks and tightened the extension 2 clicks and turned on 1 stage of nitrous (80 jet) at 1.3 seconds with a 1 second ramp from 30% to 100%. The bounce got better with this adjustment, but the converter was acting weird like it was a low stall converter. It locked up late and the lockup and 2nd gear shift happened at the same time and drug to motor down to 2000 rpm. Our converter unlock parameter was set at 2500 so it unlocked and re locked again. Half pass. 1.29 60'

Last pass loaded a new tune with more rpm that Les emailed us. went 4 clicks looser again on compression, added second stage (70 jet) at 2.3 seconds. Converter still acting tight. Stuck hard, but drove right. Wouldnt shift into 3rd for some reason. So nitrous only came on for 3/10 of a second before it was over our max rpm setting for nitrous. Let off before 1/8 mi. 1.29 60'. Here's a video of that pass.

Pass 4 sonoma. - YouTube

We're putting a new valve body in on wednesday and going back to the track wednesday night to see what we can figure out.
 
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We went back to the track after swapping valve bodies and coming up with a new plan for commanding shifts. We played with suspension a bit and cory made 3 of his licensing passes in my truck. It was a fun night. Mostly street cars, and a slick track.

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HALESTORM55 said:
Going to have to run screws

Sent from my SM-G900R4 using Tapatalk
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Mickey Thompson makes it very clear that you should never run screws with their radial tires. You can either glue the tire to the wheel, or run beadlocks. I'm not worried about 1/4" of movement after 3 runs, but I might glue them at some point.
 
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