Dear Kiran (moralfibre) - of course it's a piece of cake but not eatable though (just kidding) - these are sections of the cylinder head. The drawings of any cylinder head look like this only.
FIAT - PART NUMBERING SYSTEM:
I am giving here the original FIAT part numbering system which we used for our engineering documentation etc. I believe that it is being used for today's Palio by FIAT INDIA also and is still used by FIAT worldwide.
Any original FIAT part number would be in 2 parts - the letter F followed by a 7 digit number, then a slash (/) and then a location indicator called a "matricola" in Italian (matrix in English).
A typical part number would read like this - F4095671/5.10.010
F = FIAT (S = SEAT of spain)
7 digits = part number
Matricola details were first number (5 above) would indicate as - 0 = engine, 1 = chassis, 5 = body. That means this is a body part. the next two numbers (10 above) would indicate the body group to which this part number belongs 01 = full body layout, 10 = external panels, 11 = internal panels. The last 3 numbers would indicate the breakup location, (000 would mean full assembly, 050, 100, 150 etc would lead to parts. The dimensions would be indicated accordingly. Assembly drawings would carry reference assembly dimensions only (so easy to refer). I was able to pull out any drawing within minutes (and there were no computers then).
All drawings were stored in a section known as COD (Custodians of Documents) in the R&D building in Kurla. I have seen original FIAT drawings made in 1953 (before I was born), drawn with tee squares and set squares. Even the holes made in the papers whenever a compass was used could be seen. The deawings carried complete details including toleranced dimensions as well as notes for surface finish, surface treatment etc. A typical note would read ("yellow passivation as per fiat standard 5.57405", test for salt spray as per fiat standard so-and-so), which were also available in COD for our references.
Amazing clarity, no confusion at all. A beautifully engineered product with perfect engineering documentation. I am proud to say that as an engineer, however hard I tried (and I actually tried very hard), I was not able to find a single design fault in the FIAT designs.
Best regards,
Behram Dhabhar |