Jeff Stich
True Classic
I do not see any pictures of the thermostat side. That might help a little as i know there are many T-stat styles out here.
All Fiat 128, X1/9 & Strada (& Yugo) SOHC cylinder heads have the same 3-bolt pattern for the thermostat housing mounting flange, regardless of the style of the thermostat unit (ie: hose port configuration & 1-piece vs. 2-piece).
For example, this is what the thermostat housing mounting flange on my Euro 1500 X1/9 head looks like:
USA 1500 FI 14-bolt X1/9 (3 thermostat mounting bolts seen at far right):
USA 1500 FI X1/9-Strada:
USA 1500 Carb X1/9-Strada:
USA 1300 128-X1/9 (& Yugo 1300):
USA/Euro 1100 128 (& Yugo 1100):
The next-generation Fiat SOHC derivative engines (Tipo, Punto, etc.) are the ones with a modified (2-bolt) thermostat mounting flange.
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