Even better, this type of engine seems to be rather good, can be tuned easily, parts availability is good, and it’s easy to put some rather decent (rear wheel drive) gearboxes behind it. And last but certainly not least, they seem to be rather bomb proof on their standard internals (250 BHP easily available and a safe rev range to 7500 rpm). Also being all alloy it’s much lighter than the original Triumph “slant four”. So more than enough reasons to try and fit it in a TR7. Especially as parts supplies for the Sprint engine have been rather difficult so now and then.
First measurements showed that this engine was quite a bit higher than the Triumph “slant four” so I was a bit sceptical of it fitting under the bonnet. But it turned out to be no problem as it can be placed further back. This, combined with its lower weight, should be rather good for weight distribution. But probably the biggest problem is that there is so much room around the engine that making some decent front engine supports will be quite a challenge.