connecting rod difference...

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1976spyd
Posts: 16
Joined: Sun Sep 24, 2023 1:05 pm
Your car is a: 1976 fiat 124 spider

connecting rod difference...

Post by 1976spyd »

why can I not use a 1980 rod in a 1976 engine ? I'm doing a rebuild and I noticed they say the newer rods don't fit...
18Fiatsandcounting
Posts: 3798
Joined: Fri Mar 15, 2019 11:23 pm
Your car is a: 1969 and 1971 124 spiders
Location: San Francisco Bay Area

Re: connecting rod difference...

Post by 18Fiatsandcounting »

The rods are different lengths. The 1980 engine would be a 2 liter block, which has a 145mm center to center distance on the rods. A 1976 engine would have the 1.8L block whose rods are 136mm center to center. Both big end and small end diameters are the same though.

Different strokes for different, errr, engine sizes....

-Bryan
1976spyd
Posts: 16
Joined: Sun Sep 24, 2023 1:05 pm
Your car is a: 1976 fiat 124 spider

Re: connecting rod difference...

Post by 1976spyd »

thank you for clearing that up for me.
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