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The Beast of Turin – The Rebirth of a 1729 Cubic Inch S.76 Fiat – Assembly of the Engine

  • S761
  • Test fit of the 7.50-inch diameter pistons

The Goodwood Festival of Speed is being held next week in the UK on June 26-29, and Duncan Pittaway and his helpers Bruce and Tucker are working very hard to get the S.76 Fiat ready and there on time. Stefan Marjoram was at Duncan’s shop on the weekend of June 8-9th and took this set of photos showing the installation of the intake valves, connecting rods, pistons, the block and the s.o.h.c. assembly.

The huge four cylinder engine has a 7.5-inch bore x 9.843-inch stroke with a 1729 c.i.d. (28 liters) and it produces 300-h.p; each cylinder displaces 432 c.i. Many thanks to Duncan and Stefan for sharing the rare sight of the engine internals with us.

The Old Motor has been following this project for the last three-plus years and you can take a look back here at eight posts on the S.76 Fiat; there you can see many more of Stefan’s images and art, period photographs and as much information about the cars as can be found.

As of yesterday they were still on target, but have lots of plumbing and last minute details to attend to. Take a moment to visit with Stefan Marjoram and also learn all about The Festival of Speed. Stay tuned for a follow up.

  • S762      S763      S764
  • The crankcase, crankshaft, flywheel and connecting rods
  • S765      S766      S768
  • Installing the caged single intake valves, test fit of the block and pistons
  • S769
  • Installing the three camshaft bearing towers
  • 14435710892_684d036802_o      14433691601_a5e81bce12_o      S7611
  • Installing the s.o.h.c and the shaft and gear assembly
  • S7612      S7613      S7614
  • The oil pump – transmission-differential – cam bearing towers
  • S7615A period photo of one of the two S.76 Fiats

11 responses to “The Beast of Turin – The Rebirth of a 1729 Cubic Inch S.76 Fiat – Assembly of the Engine

  1. I like the wearing of the tie whilst working on an engine.
    A little dangerous but veddy British
    And make sure Ralph Lauren doesn’t see this these pics

  2. Thanks for the great photos. I noticed in the first photo that the mating surface on the crankcase looks like it was hand scraped? That is hard work and a real skill.

  3. Good to know there is an Autosaurus Rex somewhere on the planet being brought back to life. The “Beast of Turin” is an apt name.

  4. Where on earth can you have pistons made that size? I would expect
    the gentleman giving life to the creation to wear a stethoscope, as he
    obviously must have to have a doctor’s degree to be in the same room
    where the giant is being birthed.

    • These pistons can be made in any machine shop by a machinist. A machinist is a engineers BEST FRIEND!!! GOOGLE MACHINIST.I have made pistons that fit into a cylinder that I could stetch my arms out and not touch the cylinder walls.

  5. Congrats to Duncan Pittaway and crew for keeping Automotive History Alive!!!! Barney Oldfield, Master Driver of the World and America’s Legendary Speed King ran a Fiat Cyclone against Lincoln Beachey’s Gnome Byplane, 300 mile Santa Monica Road race, 409 mile Milwaukee Grand Prize, 203 mile Imperial Valley Road race and these are just a few. The Fiat Racers were hardy vehicles that were a force to be reckoned with on the track. Congratulations again on your accomplishment.

    Best regards,
    Wayne Carroll Petersen
    Barney Oldfield, Master Driver of the World and America’s Legendary Speed King Great Great Nephew

  6. Fabulous job to see this running on the vimeo clip, how amazing is that, can’t wait to see another posted of it running, brilliant work.

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