We’ve just completed a Triumph TR2 historic race engine. The original block was stripped down and acid dipped. A new set of 83mm liners were sourced along with a custom made set of forged aluminium racing pistons with a custom intruder on the top. The compression ratio is a little over 11:1. The bottom end is all steel and balanced to within 0.5 grams. The cylinder head is one of our own which is flowed and ported with bigger valves, bronze guides and competition double valve springs. We’ve fitted a 320 degree camshaft. We will see what power it makes on the rolling road once the engine goes in the car. If you wish to discuss a historic race engine please email.
Hi Daniel,
What is an intruder? Thanks.
Chris
Hello Chris,
Hope you are well. An intruder, sometimes referred to as a dome is a raised top to the piston which will fit inside the combustion chamber.