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GT40 Engine Start and Transaxle Details

14:15
37:19
756.2K views

At 14:15 in

Holman Moody is Building The LAST Original Ford GT40 MKII Chassis In The World! (Insane History)

What happens here

Paul then refuels the GT40 engine (using a specific fuel for racing) and starts it up, allowing viewers to hear its distinctive sound. He also highlights the magnesium-cased transaxle, a unique top-loader four-speed gearbox with quick-change gears. He explains how changing these gears allows for rapid adjustments for different track conditions, such as short vs. long tracks, crucial for achieving speeds of 200 mph. The display underscores the sophisticated engineering behind the GT40's powertrain.

Goal: Demonstrate the GT40 engine running and explain the quick-change transaxle.

Tools and materials

  • Ford GT40 — Showcasing the running engine and transaxle components
  • Magnesium-Cased Transaxle — Highlighting the specialized quick-change gearbox
  • High-Octane Racing Fuel — Powering the GT40 engine for demonstration

What they say

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like old-school vibe in here i would not want to do spark plugs in this thing your hands wouldn't fit in there no it would not have to do with it so are these equal length primaries um they're not going to be per se equal length they're very very close so you can fudge a little on equal length and be okay but the trick is they call it the bundle of snakes they're um 180 headers so they're two from each side that cross over to the other side and they're tuned to help each other so to speak they like scavenge to help it scavenge the exhaust out and most people say it's the characteristic sound of the gt40 when you hear them howling but hearing them run like an idol is one thing hearing them that full song is a whole nother thing hope you witnessed that someday yeah it's incredible to hear them at speed so what this basically does is it takes the the way the pulses are in the firing order and exchanges them into the proper bank so that they all come out in a perfect line well well it's like a give and take so you got one firing and the other one is not there's a balance there yeah and the 180s are pairing them so that they're balanced most evenly to help each other and that's what creates the high-pitched sound it creates the sound the unique sound and uh tends to make power because you get that the signature v8 kind of ripping noise is from the exhaust pulses colliding with each other because they're not they're not organized and what these do is for lack of a better explanation organizes the exhaust pulses to be smoother that's a good explanation actually like merging on a highway with people who know how to drive versus ones that don't yeah and you know what you call these merge collectors these are these are specialized merge collectors much like on a nascar and if you see the internals and how they're made it's very efficient wow that's cool that is very different everybody smiles when i hear that yeah you got to be careful bro i'm just a carburetor's worth is all i really got for that oh it smells good did you fire that up on straight lacquer thinner or just use the container okay i was like you know it's high octane fuel i just use that for i'll be gonna say he's connecting a can of lacquer through this thing hey man back when i was a kid we had a go a mini bike and it ran on like a thinner straight pipe about that long ran on like a thinner and shoot a blue flame out about that long that was how i learned to ride a motorcycle right there wow so this…

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