I am planing to build an engine for my PX 200. I would like to use either the polini 208 or the mallosi Long stroke. What I would like to know is how durable are the PX cases after welding and machining? I am going to be using the engine all day 5 days a week. Would I be better off just machining the cases?
A friend has pointed out that when the cases are manufactured they are cooled over a long period to maintain strength.
I plan on using this engine all day 5 days a week for months on end and putting 30 or 40000km on it.
Cast iron or aluminium?
Would I be better off using reed valve or keeping the standard oil injection.
Sorry I know a lot of Questions.
If you only answer one part, please the welding and machining against simply machining.