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I am about to assemble my crankshaft,the connecting rod has an oil slot on one face that touches the crankshaft journal.Does this go to the front or the back of the engine.Mark,I hope you or someone else can help me.

I am about to assemble my engine.Can I fit the rear seal (for flywheel) before heating the engine case to 100 degrees centigrade and fitting the crankshaft ? It looks as if it will be easier to fit the seal first as there is no lip to stop the seal going in crooked or too deep and if it does I can a...

I am restoring an R25/3 from 2 bikes.What is the production date of frame & engine no 328442 also frame no. 301550 & engine no. 328805.Both engines have 4 rings per piston and are size 68.5. One has 'Sp006'on it.What ring set do I need.Iam useing carby.Bing 1/22/50 what model is it from, whe...