Volvo Owners Club Forum - View Single Post - Amazon:

Burdekin · Dec 13th, 2023, 12:10

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.

Dec 13th, 2023, 12:10	#7
Burdekin Chief Bodger Last Online: May 7th, 2024 21:01 Join Date: Oct 2009 Location: Aberdeen	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. __________________ One day I will get rid of all of the rust. Last edited by Burdekin; Dec 13th, 2023 at 12:55.