Originally posted by Data
dino:
finally get some good performance out of the d5 and the d3, after 3 weeks of bad luck. it was really bad in the morning, both engines would falme out without even completing one single lap. tried everything and nothing seems to work. finally i put a #5 plug in the engines and they run great. is that true that the d series engines like hotter plugs, or it is just mine ?
the modified d3 perform better than i expected (geoff can attest to that 
), thank you for the mod tips. now let see how durable these engines are. the d5 still need some work, but i think it has everything to do with the pipe, got to find the right pipe for the d5. any suggestion ?
data
That shows the igniting timing a bit too late. Try less head shims and colder plug.
