Engine age emissions question

[UncleFista]

I "think" it's pre-95 that there's no "cat" emmisions test. Engines made before this date are available. Check later Escorts 1.6/1.8 (The "Zeta" engine is just a Zetec before Lancia threatened legal action over the name)

If I were in your shoes, I'd fit the Sierra engine and get the SVA passed using that. It'll have to meet the emmissions regs for that year of engine.

After SVA I'd fit a newer engine, like a Zetec as a Winter project.

In fact, that's (basically) what I did with my Locost.

It got it on the road that bit quicker/cheaper and forevermore has only to pass a "visible smoke test" as the engine it passed the SVA with was built in 1980.

It's now got a Zetec fitted but still only has to pass the visible smoke test.