Valve shims

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Gaelicguy
Posts: 109
Joined: Thu Feb 04, 2021 5:50 pm
Dino: Fiat Dino 2.0 Spider
Location: NE Washington, USA

Valve shims

Post by Gaelicguy »

I have a box of the 30mm valves shims.
But my engine is an early one and uses the under cup shims.
I have many different sizes of these but for other engines, mostly Japanese motorbikes. Can anyone tell me the diameter of the smaller shims.
Thanks
Michael
Too many motos and cars, not enough life left! :D
bhiggins2
Posts: 140
Joined: Wed Jun 24, 2020 5:54 pm
Dino: Fiat Dino 2.0 Coupe

Re: Valve shims

Post by bhiggins2 »

8 mm. Alfa Romeo 750 series also used 8 mm but I don't have any 750 series cars anymore to compare Alfa to Fiat/Ferrari shims to see if they are identical. I wish the Dino used 9 mm shims, as I have plenty of those and Alfas to go with them.
Ben.
Gaelicguy
Posts: 109
Joined: Thu Feb 04, 2021 5:50 pm
Dino: Fiat Dino 2.0 Spider
Location: NE Washington, USA

Re: Valve shims

Post by Gaelicguy »

Wow, thanks for the info. That would barely cover the valve stem. The smallest I have is 10 mm
M
Too many motos and cars, not enough life left! :D
bhiggins2
Posts: 140
Joined: Wed Jun 24, 2020 5:54 pm
Dino: Fiat Dino 2.0 Coupe

Re: Valve shims

Post by bhiggins2 »

8.04 mm inside diameter, same as the diameter as the 8 mm valve shaft. It is a snug fit. It is a cap, not a flat shim. External diameter is 10.2 to 10.6 mm on what I have in spares.
Ben.
Gaelicguy
Posts: 109
Joined: Thu Feb 04, 2021 5:50 pm
Dino: Fiat Dino 2.0 Spider
Location: NE Washington, USA

Re: Valve shims

Post by Gaelicguy »

Thanks Ben
Exactly what I needed to know. I am used to flat shims like the later engines used.
Michael
Too many motos and cars, not enough life left! :D
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