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Super Moderator
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And where is "RO" that you have a Manta B?

Anyway, if the thermostat for the '79 2.0 is the same as the '75 1.9 with Bosch L-Jetronic (which was the last year, and only year, imported to North America with fuel injection), here is a couple of photos. The thermostat is different than all other earlier CIH engines, which use the same stat as the Chevy Small BLock. I believe it is shared with various VW engines of the same era, and has a dual flow path. The length from the upper disc to the lower disc is almost exactly 30 mm, or 1.18 inches. Here is a photo if it helps. I think the numbers shown on the packaging are from Canadian Tire, which probably won't help you much.

The upper disc has a diameter of 52 mm (2.05 inches), while the lower disc is 34 mm (1.34 inches).

I will also move this thread to the "Parts Substitutes" forum


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