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Peter Bell's Achievements

Wheely good builder! (4/6)
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Hi Peter, I saw you the other day in Pollhill ave. I was in the red Hood. I couldn't stop as the car was running very rough. I've been trying to sort it out. Its running 2.1 standard crank, cosworth rods, wossner pistons, 10.9 compression, Burton stage2 head, 45mm inlet valves, 36mm exhaust, uprated valve springs, 10.57mm lift, Newman PH3 300 duration camshaft, twin 45DCOE webers with long bellmouths and an ashley exhaust manifold. The timing is to say the least, troublesum. I'm at the moment running max advance it 34 degs, base timing is currently 16 degs. Right this is where it gets very interesting. It pinks very slightly just over idle speed, I retarded the timing 2degs it pinks violently! The more it advances the less it pinks. I'm going to try a fraction more advance to see if it still pinks. I think that the engine is pre detonating the fuel because the temp is too high in the cylinder igniting the fuel too early. I was thinking that it was preignition, so I retarded the ignition this makes worse. The more I advance it the better it runs.
Kind regards Mick ( GIG7004 )