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Detailed Internal Component Analysis

31:17
47:33
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At 31:17 in

Lake Speed's Ford C3 NASCAR Engine: Time Capsule of 90s Technology! (Dyno & Full Teardown)

What happens here

The inspection reveals that the engine is built with good quality components, including an H-beam connecting rod and CP (CP-Carrillo) pistons, and a Hank the Crank crankshaft, indicating solid internals. However, the piston tops show evidence of being 'reverse dish,' meaning they are designed to lower the compression ratio to approximately 9:1. This significantly reduced compression (compared to a typical 13:1 for a NASCAR engine) is identified as the primary reason for the engine's low horsepower output. Further inspection using a profilometer reveals that the cylinder walls have very low valley depth (24.43), indicating a very smooth surface finish that may not retain enough oil for optimal piston ring sealing, potentially contributing to the high blow-by observed during dyno testing.

Goal: Identify specific components and measure critical engine parameters.

Tools and materials

  • Calipers — Measuring piston dimensions
  • CP Pistons CP-Carrillo — Internal component, identified as reverse dish
  • H-Beam Connecting Rods — Internal component, noted for strength
  • Hank the Crank Crankshaft Hank the Crank — Internal component, identified as a premium racing crankshaft
  • Profilometer Mitutoyo — Measuring cylinder wall surface roughness (Ra) and valley depth (Rvk)

What they say

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it's time to take the heads off he says dude i'm gonna say the war according to tom whether you like it or not okay ready ready for liftoff no nothing's broken but there's definitely like some crud on the wall here what does the chamber look like yup that's a cylinder head not all i can tell you there are people who have better eyes more more experienced eyes than i on on that valves are kind of different colors back two or brighter than the front two don't know if that means anything let's feel a distribution right on an intake with like a throttle body in the front that would make sense because more air always ends up in the back but i oh it definitely happens on these things i thought they were designed to not do that oh you try to minimize it but you don't fix it huh you can do uh in cylinder pressure transducers on every cylinder and on a common plenum uh carburetor do you like that or even throttle body it's gonna be different all eight cylinders that's one of the tricks people were doing was they would actually have different cam lobes for each cylinder to try to maximize each cylinder because the v8 engine is really eight single cylinder engines with a common plenum so can we find out what the if it's tiny or not it's kind of too antsy and get the other head off like it's already unbolted we could just lift it off well we need to know well you can see where it where it's been sitting right so that's where it's set because you got a little bit of rust and stuff in there or discoloration yeah because that's where the fist that's where the ring pack was sitting so top to bottom that's where the probably oil ring was sitting all right it's got good parts in it htc hank the creek in it yeah yep how about that yeah yep we can keep those oh yeah i hate the crank yeah that's cool yeah what's that uh he was really he had his uh he was kind of the premier crank builder back back in the day what era is that from well it's from the 90s but but he was uh at the tail end of what he was doing in the 90s and for me the 80s i don't know before that he was the he was the guy maybe yeah this isn't some giant heavy crank this is a good good crank then yeah we can keep this crank so there's still no like major problem there's no reason to make sense we still don't know why no it was verified this is not a tiny engine it's in the 350 something range yep we have no good reason for its lack of horsepower yeah it's called what it is i mean you got seat beat pistons in it…

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