22/12/2025
Early Christmas present for Eric.
Engine rebuild by Brett Sims and a massive rewire by Ian Collings and team ready for a programmable ECU to be fitted and mapped by Mike Longman..
You can see the results from the dyno runs as a before and after comparing the engine from earlier this year to this. Power is up from 138.7 BHP at the wheels (170 at the flywheel) to 145.2 BHP (180 at the flywheel), so a good increase in power. What's more impressive is the increase in torque through the mid range which will help us pulling out of slower corners.
All of this from a full 'works spec' GPA 1.9 engine.
We have also been tinkering with fuels and have tested and mapped the engine with both 99 RON pump fuel and Sustain Racing C50 race fuel which is 102 RON. A slight increase in power and torque from the Sustain fuel, but quite a big reduction in fuel consumption and of course, it's a sustainable fuel.
Great work team!
Retro, Race & Rally
Brett Sims Motorsport
Longman Racing
Sustain Fuels