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turbo 4.8 on dyno again

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Old Oct 17, 2014 | 12:55 PM
  #11  
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I have a gauge for that
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I cant see the graph, but will look later.

When you see torque peak hard then fall but power stay the same the turbo is out of breath (too far right on its compressor map). A bigger turbo would simply shift the torque curve to the right. More torque at higher rpm is more power.

When you increase boost and dont see any more power, the turbine is choked.
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Old Oct 17, 2014 | 01:12 PM
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What's you cam specs?
Lunati 221/221 .558exh/int. 112 lsa
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Old Oct 17, 2014 | 03:42 PM
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Originally Posted by Atomic
I cant see the graph, but will look later.

When you see torque peak hard then fall but power stay the same the turbo is out of breath (too far right on its compressor map). A bigger turbo would simply shift the torque curve to the right. More torque at higher rpm is more power.

When you increase boost and dont see any more power, the turbine is choked.
Good info!

Originally Posted by black4.8
Lunati 221/221 .558exh/int. 112 lsa
That's a healthy cam for a 4.8!
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Old Oct 18, 2014 | 05:55 PM
  #14  
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Get a bigger turbo on that thing, and let it eat.
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Old Oct 18, 2014 | 06:05 PM
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Get a bigger turbo on that thing, and let it eat.
Brian already gave orders to have more fuel and turbo before he see's it again. the way it sits that's all its got. maybe some winter time projects.
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Old Oct 18, 2014 | 08:30 PM
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One of those 76/75 turbos would be nasty on that!
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Old Oct 19, 2014 | 08:31 AM
  #17  
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Maybe mine will be together in the spring, and we could meet up somewhere. There is usually a spring dyno day at Brians, or maybe at a track somewhere. I didn't really get to talk to you last time we were at the dyno day at the same time. There aren't any truck guys around here, everyone has mustangs and it sucks.
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Old Oct 19, 2014 | 05:00 PM
  #18  
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Maybe mine will be together in the spring, and we could meet up somewhere. There is usually a spring dyno day at Brians, or maybe at a track somewhere. I didn't really get to talk to you last time we were at the dyno day at the same time. There aren't any truck guys around here, everyone has mustangs and it sucks.
sounds good Brent, I plan on going to the spring dyno days. just got back from National Trails. that track is horrible. traction seems hard to come by there. Kil kare is a far better surface.
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Old Oct 19, 2014 | 05:05 PM
  #19  
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btw, ran a 11.09 @ 129mph spinning and bouncing down the track. only made two passes. didn't want to put it in the wall.
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Old Oct 19, 2014 | 07:35 PM
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Originally Posted by brent1976
There aren't any truck guys around here, everyone has mustangs and it sucks.
are you from the norwalk area? i have a couple friends with mustangs in that area and couldnt help but laugh at your statement..
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