Specs of the 1971 Fiat 850 Sport Spider

1971 Fiat 850 ID Plate

I checked the cylinders today and the Marvel’s Mystery Oil had seeped it’s way past the pistons in 1,2 and 4. That is good news. The number 3 though still had the penetrating oil in it. It must be pretty stuck. I soaked up the penetrating oil and replaced it with the Marvel’s. It is a long shot, I know. I will check the other engine to see if it will turn over tomorrow. If it turns without much effort I will likely end up using it instead. Or, at least the block and pistons.

The photo above is the ID plate from the car.

  • Chassis Type: 100GBS1
  • Chassis Number: 0093967
  • Engine Type: 100GBS.040
  • Spares Number: 0386994
  • Paint Number: Body:120 Top:120

I added a documents page to keep track of things I find about this car. The first thing in there is a Fiat color chart from the correct time period. I knew it was originally red and now I know exactly which red.

The Fiat 850 was produced from 1964-1973 with about 2.3 million produced in the various forms worldwide. Around 140,000 were Spiders. Originally the 850 had an 843cc engine producing 49hp and a top speed of 145 km/h (90 m/h), then in 1968 Fiat introduced the 903cc (55.104 cu in) with it’s improved performance to the Spider and Coupé. The 903cc inline 4 (S4) is bored at 65mm and strokes at 68mm with a output of the engine is 52hp and I think with a hotter cam and maybe a bigger carb you could get 70 hp out of it. As it is

The styling of the Spider was designed by Bertone. Bertone is an Italian car company specializing in styling and coachwork. They have styled cars for Abarth, Alfa Romeo, Citroen, Ferrari, Fiat, Lancia, Lamborghini, Mercedes Benz, Volvo and others. One of the more recognizable Bertone styles was the Lamborghini Countach. Incidentally, Fiat now owns Bertone, as well as Ferrari, Alfa, Chrysler … There is an old 850 Spider Brochure on the brochures page.

The Carb is a Weber 30 DICA. There is a diagram and parts list on the documents page.

Here are some great books I have found.

Click here for the Misc Photos page.