Picture Of XR2 Cars

The next stage up starts with a rebore out to 1700cc (£70) and fitting Hepolite +90 thou' pistons (£165). A big valve head with 1.625 inch inlets, 1.4 inch exhausts (£440) may also need valve cut-outs to the pistons (£70) and a high pressure oil pump should be used to keep the juices flowing. A cam choice of Kent 234 or 244 (£200) will suffice and fuel needs to be supplied better by twin-40 or 45 sidedraft Webers. By now the engine will be kicking 145-plus bhp out, so everything else on the car should be upgraded too.

These performance figures are about as good as you're going to get from the cross-flow without spending the kind of money that would keep Zanzibar running. If more horses are required it's probably time to think about a CVH transplant - give the Fiesta Centre a bell for the in-depth (and lengthy) story on that one.