| 505 Turbo 1989, Head
Replacement with Danielson 230 Trophé Head Kit |
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Danielson head Modified spark plug location, a lot more centralized in combustion chamber and less recessed. Compare with photo below. The plug installed is a NGK CR9EK with 2 ground electrodes. The valves are stock OE. Available NGK 10 mm plugs (hottest to coldest): C7E, C8E, C9E, CR10E(resist). Suffix: K= 2 ground electrode. |
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Stock head. Standard combustion chamber with Bosch W7DTC, note how recessed and far away from exhaust valve (on right) the plug sits. |
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stock Bosch W7DTC (R) and NGK CR9EK(L) for Danielson head. |
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With head off, sealing area around all cylinders is evident except for cyl #1 at firewall. site of leaking gasket. |
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Stock head. No cracks, nice even color between cylinders. |
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Area of head gasket leak. This is the stock gasket, the Danielson kit comes with a reinfiorced gasket that has more metal in the area between the cylinders on both sides of the gasket. Unfortunately the gasket is not available separately from Danielson. Before installing it I should have had it copied. |