Hi
Just found this thread and I find myself in a similar situation.
I have just "refreshed " my engine. It was a mechanically noisy. On strip down the little ends were shot. Its a pressure fed crank with R4 pistons and rods. Through this forum, thanks. I acquired a new set of pistons and rings. Bores showed little wear so were glaze busted. The engineering firm that did the work felt the valve guides were Ok so re cut and lapped existing valves. New set of big end shells and back together. On start up its still mechanically noisy, Its done about 5 miles, noise is too much and its puffing blue smoke although it also has a compression test at 110psi. I decided to take the engine out and strip it , however having taken off the manifolds. I have found the inlet ports are very wet with very black engine oil. Sump oil is still fairly clean Straight SAE 30 running in oil. Any ideas how the oil is getting in to the inlet ports.
Sorry forgot to add, Tappet chest looked if anything a little dry.
Just found this thread and I find myself in a similar situation.
I have just "refreshed " my engine. It was a mechanically noisy. On strip down the little ends were shot. Its a pressure fed crank with R4 pistons and rods. Through this forum, thanks. I acquired a new set of pistons and rings. Bores showed little wear so were glaze busted. The engineering firm that did the work felt the valve guides were Ok so re cut and lapped existing valves. New set of big end shells and back together. On start up its still mechanically noisy, Its done about 5 miles, noise is too much and its puffing blue smoke although it also has a compression test at 110psi. I decided to take the engine out and strip it , however having taken off the manifolds. I have found the inlet ports are very wet with very black engine oil. Sump oil is still fairly clean Straight SAE 30 running in oil. Any ideas how the oil is getting in to the inlet ports.
Sorry forgot to add, Tappet chest looked if anything a little dry.