The Triumph 2000 / 2500 / 2·5 Register Forum

I am the proud new owner of a AMI built Topaz2000 Mk2.

It has had a transplanted 2500 engine, with a serial number of MM46649HE. Is this a TC or S engine?

The TC and S had the same engine from May75, so all S models have an MM engine number.
The give away is the long inlet manifold and SU HS6 carbs on the TC/S engine. Earlier TC engines had HS4 carbs and shorter manifold.

Colin