Mike, I realise that i will not get as good results as some one with a flow bench and other equipment, I trained as a mechanical engineer during my apprenticeship and am quite hands on. I've done turning, milling, grinding and welding etc in the past.
My head has a water leak from the gasket thats why the heads are coming off, as standard the engine should have 137bhp with the carbs it has 148bhp and charactor
its not a race car just a great cheap raw entertaining car for the weekend to have fun with. When I last removed the exhaust manifold I could see the exhaust valves and noticed a build up of crud on the exhaust valves, the engine has never been apart so a decoke shoud'nt do any harm.
Regarding the porting I was thinking of blending the bowl area slightly. the combustion chambers volumed and equalised using a home made device and measuring jug. Regarding the valves, do you think polishing the exhaust valves and lapping the valves would surfice as its not down on power? Your opinion on the latter and any other helpful suggestions would be welcomed.
Cheers Lee