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Dyno Results Analysis and Comparison

9:13
43:59
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At 9:13 in

This NASCAR Engine Was Built 20 Years Ago and NEVER Used! How Much Power Has It Lost? (Ford C3)

What happens here

The host and dyno operator review the dyno sheets, comparing the current 722 HP with the 733 HP from 2004. They note that the current engine is pulling more vacuum (8 inches vs. 5 inches), indicating better ring seal, possibly due to the rust acting as an abrasive to seat the rings. The operator also confirms that despite being 20 years old, the rocker arms were not touched. The overall outcome is surprising, suggesting that sitting for 20 years with some rust did not degrade its power output as much as anticipated.

Goal: Compare current dyno results with historical data and discuss contributing factors.

Tools and materials

  • Dyno Control Console PME Engines — Viewing live and recorded data
  • Dyno Sheets — Historical reference for performance comparison

What they say

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seems to be really making less as it gets hotter yeah to me is Pistons are a little too tight because they're expand they're expanding to the point where they're fitting tighter in the cylinder that's the only thing that could cause more driving yourself can you lean it out a little bit like that it's going to make it a little bit hotter too right so they do that more probably why they ended up after 20 Dino pools they had it a little bit richer as well they probably saw the same things like okay it's just going to run better a little bit richer because they needed the fuel to cool it shows how critical those those little measurements are because if you can get that down to where you can run a leaner then you make more power by being leaner and not having that that resistance how was that fuel measured is that in the like the fuel pump system of the dyno counter right up there and see the water oh yeah instead of interesting to think about how that may have affected certain engine builders in their uh perceived skill level back in the time where people didn't really know how to measure this stuff to where some guy just thought oh well you make the piston this big in relation to the tolerance of the bore and if other people have different beliefs on that and whoever may have just been doing it a little bit looser than some other guy could have had better engines Without Really realizing what they were doing it depends a lot on the alloy because some of the Allies expand some of the Allies are soft and they're more forgiving so the skirts tend to like squish and on some of the hard Alloys the Piston is really rigid but depending upon the block and upon the home depends what it's going to do there's no telling once you find your combination stick with it if you were to Rockwell test Pistons from the 80s with the same part number come up with different numbers like from like the material differences if they're brand new they shouldn't interesting if they're used they're all going to come up different because lots a lot of the way we tune a lot of stuff it's by the Rockwell hardness on the Piston like all Chevys run number seven runs hot because of the length of the runners the way it's saturated so we always run a little bit more jet in that corner to compensate for it and we'll take the motor apart we measure the hardness on all the Pistons and we can tell if we're going in the right direction or not you can compensate so much in the manifold that you can…

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