Nostalgia Dragster Rebuild

[Preen59]

Is the Piston and rod the same material ?

If not wouldnt it be better to take a fracton more just in case there is a different rate of expansion with heat ?

Correct-a-mundo mate. They currently "fit" but are too tight. So another 50 thou should fix that.

And yes, these engines have crazy thermal expansion rates. For instance, it has 14 thou (0.355mm) piston to bore clearance. I'll post some more of the specs at a later date..

Oh and it will be running STRAIGHT 60w oil.. At 90PSI oil pressure.

EDIT: Sorry i should have pointed out for people that don't know.. The rods are BROOKS forged aluminium.