Carby came straight from TD Hatrick & co- is a VM38 Mikuni. Rang and told him wot it was for and he sent it all rejetted. Banged it straight on and never touched it.
Piston I used is an White Bros XR400 from Ballards.
Still run points, (but looking at an electronic option) total loss battery (Nicad pack from Battery world) - & 6 volt coil.
Cam timing changed slightly - have it written down in the shed but aint going there as its too cold and ill get wet getting there. Have an adjustable cam sprocket if your chasing one.
Change clutch springs to a set of heavier Barnett ones (MT-7-4) Dont know what they are out off. But need to slightly machine out clutch plate where the springs sit.
If Im not on the sidecar Ill definatelly take it to wandering. Have changed gearbox to XL250 ratios so would like to see how that goes.
Head gasket..... Nearly forgot. Made a copper one but that started to let go. I have been meaning to Ring Ron Chandler as I believe he is making up a 420 kit and hopefully has head gaskets to suit. (std size misses by a bit ---- well a lot actually)
RU going to Clackline??
You have probably read that the head should be modified to take roller bearings on the cam journals rather than the std bushes. .... Recommended.
My cam has been reground to a "Sports XR75 Webb profile" grind by camshaft engineering in Osborne Park.
Cant think of anything else done to the engine.
Would love to see one in a Maico
Steven