What kind of pushrod is used for dyno test?
The valvetrain for the test is comprised of a Crane camshaft with .624-inch lift, a duration split of 232/242 degrees at .050-inch with a 112-degree lobe separation angle. A COMP Cams standard-travel hydraulic-roller lifter was used along with hardened pushrods in all the tests.
Do you have to lock down the pushrod?
The pushrod must spin freely. with NO up and down movement. From this point you want to shorten one full turn, 6 flats. Lock down the pushrod and repeat for the rear cylinder. DO NOT TRY TO MAKE SHORTCUTS IN THIS PROCESS. Proper bleeding down of tappets, is critical for healthy running motors.
What’s the RPM of a 7.500 inch pushrod?
After installing the 7.500-inch pushrod, the graph showed distinct gains over both the 7.400- and 7.450-inch pushrods, starting at about 4,900 rpm with similar dips below that RPM as the 7.450-inch pushrods. “I even went as short as a 7.350-inch pushrod, and we saw a little bit of a loss up top, although it did pick up down low.
How big is a pushrod on a dyno mule?
For the test mule, Holdener used a 383 LS made up of a factory 5.3-liter block punched out to 3.905 inches with a 4.00-inch-stroke crankshaft. For the sake of thoroughness, the same test was performed on a stock bore and stroke 5.3 dyno mule, and the results tracked with those achieved with the 383.
The pushrod must spin freely. with NO up and down movement. From this point you want to shorten one full turn, 6 flats. Lock down the pushrod and repeat for the rear cylinder. DO NOT TRY TO MAKE SHORTCUTS IN THIS PROCESS. Proper bleeding down of tappets, is critical for healthy running motors.
Can you use adjustable pushrods on a Harley?
In addition, you’ll receive sixteen video downloads, access to GOLD member LIVE events, and so much more! Learn how to remove the Harley cam cover and cam lifters. We remove the lifter blocks and Harley lifters in this procedure to give you a better view. We cut the pushrods and will use adjustable pushrods during reassembly.
What should I do with my pushrod If I do not have hl2t?
If you do not have HL2T or Travel limited tappets, lock the pushrod down. Repeat process for the other cylinder and pushrods, you are now done adjusting. If you do have HL2T or Travel limited tappets move on to the next step.
Can you spin a pushrod with your fingers?
When the adjustment is correct, you will again be able to spin the pushrod with your fingers. The pushrod must spin freely. with NO up and down movement. From this point you want to shorten one full turn, 6 flats. Lock down the pushrod and repeat for the rear cylinder. DO NOT TRY TO MAKE SHORTCUTS IN THIS PROCESS.