Port Cylinder Head

40×35
2_New_1600_Dual_Port_Cylinder_Heads_for_VW_Volkswagen_90_5_92_bore_40x35_Valves_01_cq

2 New 1600 Dual Port Cylinder Heads for VW Volkswagen 90.5/92 bore 40×35 Valves

A 12mm 3/4 reach spark plug is far superior when dissipating heat. There is more surface area on a long reach spark plug to dissipate the heat. 12mm 3/4 spark plug also has much less chance of stripping the spark plug hole threads because the threads are 3/4 inch long instead of only 1/2 inch. 12mm spark plug holes are further away from the valve seats and reduce the chance of cracking from the spark plug to the valve. Stock combustion cambers have square corners around spark plug hole. Having a sharp corner creates more heat from the plug to the valve seat and increase the chance of cracking. True…
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2_New_1600_Dual_Port_Cylinder_Heads_for_VW_Volkswagen_94_bore_40x35_Valves_DHRSP_01_sr

2 New 1600 Dual Port Cylinder Heads for VW Volkswagen 94 bore 40×35 Valves DHRSP

2 New 1600 Dual Port Performance Cylinder Heads for VW Volkswagen cut to 94 bore with 40x35 Big Valves and Dual High Rev Springs for 1914cc pistons and cylinders. Don't be fooled by cylinder heads with stock 14mm 1/2 reach spark plug holes and stock combustion chambers. A 12mm 3/4 reach spark plug is far superior when dissipating heat. There is more surface area on a long reach spark plug to dissipate the heat. 12mm 3/4 spark plug also has much less chance of stripping the spark plug hole threads because the threads are 3/4 inch long instead of only 1/2 inch. 12mm spark plug holes are further away from…
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2_New_1600_Dual_Port_Cylinder_Heads_for_VW_Volkswagen_85_5_bore_40x35_Big_Valves_01_ip

2 New 1600 Dual Port Cylinder Heads for VW Volkswagen 85.5 bore 40×35 Big Valves

A 12mm 3/4 reach spark plug is far superior when dissipating heat. There is more surface area on a long reach spark plug to dissipate the heat. 12mm 3/4 spark plug also has much less chance of stripping the spark plug hole threads because the threads are 3/4 inch long instead of only 1/2 inch. 12mm spark plug holes are further away from the valve seats and reduce the chance of cracking from the spark plug to the valve. Stock combustion cambers have square corners around spark plug hole. Having a sharp corner creates more heat from the plug to the valve seat and increase the chance of cracking. True…
Read More
2_New_1600_Dual_Port_Cylinder_Heads_for_VW_Volkswagen_90_5_92_bore_40x35_Valves_01_oe

2 New 1600 Dual Port Cylinder Heads for VW Volkswagen 90.5/92 bore 40×35 Valves

A 12mm 3/4 reach spark plug is far superior when dissipating heat. There is more surface area on a long reach spark plug to dissipate the heat. 12mm 3/4 spark plug also has much less chance of stripping the spark plug hole threads because the threads are 3/4 inch long instead of only 1/2 inch. 12mm spark plug holes are further away from the valve seats and reduce the chance of cracking from the spark plug to the valve. Stock combustion cambers have square corners around spark plug hole. Having a sharp corner creates more heat from the plug to the valve seat and increase the chance of cracking. True…
Read More