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toon1 |
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#1
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,849 Joined: 29-October 05 From: tracy,ca Member No.: 5,022 ![]() |
so far the liift is good, cam card say's .426, I've got about .428.
Here is a pic. with the vave at half lift. Seems a little off(leaning back) to me. Attached image(s) ![]() ![]() |
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HAM Inc |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 850 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None ![]() |
Been out of town for a few days, so I just got up to speed on where the thread has gone.
Clayton I think you'll like this method of setting the geo. I wish I had photos, but I don't. A couple of things I should have pointed out were; that once the rocker spacers are set you need to reinstall the springs before setting the heads on, and rotate the cam lobe so the heel of the cam is in position (180 cam *'s from max lift). This works if the cam lobe is symetrical. If the cam lobe is asymetrical (not so comon on street cams) then what you'll want to do is bring the lobe to half lift, (taking a measurement directly at the lifter) and lock the crank in position. In this situation you are not going to install the springs before setting the head back on the cylinders. Leave the lock collar in position on the valve. Now when you run your adjustable pushrod up you are doing so with the cam lobe at half lift and the valve at half lift as well. The lobe doesn't have to be asymetrical to use this particular step, but is neccesary on asymterical lobes. You can take the half lift reading on the lobe with any cam and lock the crank down. If you use the symetric lobe method and don't end up with the same geo you had with the lock collars holding the valves at half lift then you may have an asymetric lobe. Just rig up a way to measure lift at the lobe and eliminate that variable. If the lobe is at half lift and so is the valve when you set the pushrod length, then no additional variables can effect the outcome. I hope this makes geo easier, as I know what a pain it is to go fishing for it using other methods. |
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