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🔧 RA100E-V805 — The Final V10 Engine Raced by Ayrton Senna | Full Disassembly

Get ready to dive into Formula 1 history.

In this video, we take you inside the meticulous disassembly of the RA100E-V805 — the very last Honda V10 Formula 1 engine ever raced by the legendary Ayrton Senna. This exact unit powered Senna’s McLaren MP4/5B during two key Grand Prix weekends in 1990: the dramatic Japanese GP at Suzuka and the season finale in Australia.

Frozen in time and untouched for over three decades, this engine wasn’t just preserved — it was hidden, waiting to be rediscovered. Now, it’s been carefully taken apart by experts at Honda Racing Corporation and presented in a custom-built display case… just before going under the hammer during Monterey Car Week.

At the very end of the video, we’ve added the unmistakable sound of this V10 masterpiece — as driven by Senna himself. Turn up your speakers for that.

00:00 Introduction
00:29 Cylinder head disassembly
19:02 Dismantling auxiliaries and oil sump
31:54 Dismantling pistons and connecting rods
43:23 Dismantling crankshaft
47:35 RA100E-V805 Engine Sound

🏁 Why This Engine Matters

RA100E-V805 is the final V10 engine ever raced by Senna in Formula 1.
It powered the McLaren MP4/5B during:
Suzuka 1990 (Japanese GP warm-up)
Adelaide 1990 (Australian GP race)
After the 1990 season, Honda transitioned to V12 engines — making this the last of its kind.
Most Honda F1 engines from that era were disassembled and scrapped after analysis. This one survived.
It's being auctioned by Bonhams at the Quail Auction in Carmel, California on August 15, 2025.

This is not just a mechanical artifact. It’s a piece of racing legacy — a snapshot of a golden era where engineering met raw talent on the track.

⚙️ Engine Specifications – Honda RA100E-V805

Engine type: Naturally aspirated V10
Displacement: 3.5 liters
Maximum power: Approx. 690 hp @ 13,500 rpm
Weight: ~160 kg
Usage:
Japanese GP 1990 (warm-up) – 29.3 km
Australian GP 1990 (race) – 302.4 km
Chassis used: McLaren Honda MP4/5B
Driver: Ayrton Senna

🔊 BONUS: McLaren Honda MP4/5B V10 Sound
At the end of the video, listen closely — that's the RA100E-V805 screaming down the straights, just as it did under Senna’s right foot in 1990.

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