Oh well..... experimenting is my middle name
- A Novarossi piston and rod will fit in a Mega (1st model)
- A Basic N21-3T set will work very good in a JP R1 crankcase with the JP crankshaft (just raised and widened the exhaust port)
- currently I am busy to fit a GRP P/S set into a NR engine, that is more difficult. The piston pin is 4.2mm instead of 4mm. So I ordered a piston pin and have to drill up the NR conrod. When it works it saves me 150 euro for rebuilding a good engine!