9K AP2
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From: Annapolis, MD
Originally Posted by DaveOnLI,Oct 10 2006, 06:36 AM
F22 has increased stroke and therefore has higher piston speeds. There are a few people that have AP2 engines running AP1 ECUs which take them to 9000 RPM. However the power does drop off somewhere after 8000 and does not continue to climb to 9000.
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From: North Richland Hills, TX
Originally Posted by bluegas68,Oct 10 2006, 09:24 AM
As in F1, im sure those engines are larger than 2.2 and they rev WAY HIGHER than 8K.
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From: Dry Branch
F1 motors displace 2,400 cc's and have 8 cylinders, so they have a stroke similar to a 1,200 cc I-4. IOW, the piston speeds are lower at 9k than an AP1, becaue the stroke is a LOT shorter. At 18k the piston speeds are similar to an AP1 at 9k.
Of course the valves still have to open and close twice as fast when the motor spins twice as fast, and the system they use to close the valves (it uses air pressure) only last two races (like the rest of the motor). Not great for a daily driver.
Of course the valves still have to open and close twice as fast when the motor spins twice as fast, and the system they use to close the valves (it uses air pressure) only last two races (like the rest of the motor). Not great for a daily driver.
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From: SIN CITY - Las Vegas
Originally Posted by RED MX5,Oct 10 2006, 07:47 PM
F1 motors displace 2,400 cc's and have 8 cylinders, so they have a stroke similar to a 1,200 cc I-4. IOW, the piston speeds are lower at 9k than an AP1, becaue the stroke is a LOT shorter. At 18k the piston speeds are similar to an AP1 at 9k.
Of course the valves still have to open and close twice as fast when the motor spins twice as fast, and the system they use to close the valves (it uses air pressure) only last two races (like the rest of the motor). Not great for a daily driver.
Of course the valves still have to open and close twice as fast when the motor spins twice as fast, and the system they use to close the valves (it uses air pressure) only last two races (like the rest of the motor). Not great for a daily driver.
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