Quote:
Originally Posted by Burdekin
What B18 do you have? If it's a A engine then there's a good amount of added HP by going to the later B18B spec or even D cam with 10:1 CR with twin SUs. Tidying up the ports directly under the valves and removing the step on the valve stems is probably far enough for a nice street engine. Going oversize for the bottom end will help with torque but I think you need to be careful with the B18 as you might hit a water jacket due to the poor castings. Engine work isn't cheap.
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Thanks for getting back to me.
I already have a 123 ignition and upgraded from single zenith to twin su's with a custome made inlet/outlet and straight through stainless exhaust system so i went from 60 hp to 80 so big improvment. i only have a 4 speed so i went for mid when getting the downpipes designed so after that grunt rather thsn the top end. I have a good guy who restores and builds engines. Has done a lot of work for Boyd Coddington, so lucky to know him!