Power range of "hot" engine
I have a beautiful 62 MKII (BN7) Tricarb centershift, which I wanted to give a little more power. For this purpose, I added a few features, that one normally would chose to improve performance. Those are, amongst other modifications:
• DWR Alloy Head, ports polished
• tubular manifold and “open” exhaust system
• replaced (3) HS4 with (3) HD6 carbs, piston springs and jets according to recommendations of UK Healey Club website (see attachment HD6 Tricarb setup )
• Cosworth pistons, compression ratio is approx. 10.5 to 1
• DWR 8 “hot street” 278 degree cam
• adjustable cam sprocket
• oil cooler
• Mallory ignition
• uprated cooling system
When I had the car dymo tested, it only gave a bit more than 150 HP, with torque approx 235 Nm (174 lb/ft). CO readings were fine the entire range, so it seems the carb settings are correct. Ignition is also set well, as far as I know.
My questions: What power and more importantly torque could I expect to get from an engine set up as described? And where can I start looking for the missing power?
Leo
I have a beautiful 62 MKII (BN7) Tricarb centershift, which I wanted to give a little more power. For this purpose, I added a few features, that one normally would chose to improve performance. Those are, amongst other modifications:
• DWR Alloy Head, ports polished
• tubular manifold and “open” exhaust system
• replaced (3) HS4 with (3) HD6 carbs, piston springs and jets according to recommendations of UK Healey Club website (see attachment HD6 Tricarb setup )
• Cosworth pistons, compression ratio is approx. 10.5 to 1
• DWR 8 “hot street” 278 degree cam
• adjustable cam sprocket
• oil cooler
• Mallory ignition
• uprated cooling system
When I had the car dymo tested, it only gave a bit more than 150 HP, with torque approx 235 Nm (174 lb/ft). CO readings were fine the entire range, so it seems the carb settings are correct. Ignition is also set well, as far as I know.
My questions: What power and more importantly torque could I expect to get from an engine set up as described? And where can I start looking for the missing power?
Leo