Evo Pushrods
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Road Warrior
Joined: Nov 2005
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From: Mountain View, California
Evo Pushrods
I've read that Evo pushrods should be loose enough that you can easily twist them with your fingertips. I have Crane adjustable pushrods which I've adjusted to zero lash +.100", and there's no way I can twist them with my fingers, but the motor runs fine. Are aftermarket lifters made with stiffer springs that would cause this condition?
Thanks!
Thanks!
Tourer
Joined: May 2006
Posts: 458
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From:
RE: Evo Pushrods
Yes, DO NOT turn the engine until you can spin them. Sometimes it takes up to 20 minutes to bleed down.
One question.... are the lifters new? If they are, then you may not have adjusted them correctly. Since new lifters have no oil in them to bleed down, you have to be VERY careful when setting them. The spring inside the lifter compresses very easily, so you have to take great care when initially setting them up to the no-lash position. It's easy to compress the spring without knowing it. Then, if you make the final adjustment to .100 and the spring has already been compressed, you will actually be opening the valves that much. If that happens, then you won't be able to turn them since they will never really bleed down.
Since you've already run the engine, go back and readjust them. This time there should be oil in the lifters. When they say that they will spin "easily", it doesn't always mean that they will spin VERY easily. If you can spin then with two fingers with a little effort, then they are ok. After adjusting one pushrod, wait until it spins BEFORE turning the engine to adjust the next one. Then, when they are all adjusted, turn the engine over BY HAND (lift the rear wheel and put the tranny in fifth gear, and pull the spark plugs, too) using the rear tire. If there are no unusual noises and it turns over easily, then you can start it up.
One question.... are the lifters new? If they are, then you may not have adjusted them correctly. Since new lifters have no oil in them to bleed down, you have to be VERY careful when setting them. The spring inside the lifter compresses very easily, so you have to take great care when initially setting them up to the no-lash position. It's easy to compress the spring without knowing it. Then, if you make the final adjustment to .100 and the spring has already been compressed, you will actually be opening the valves that much. If that happens, then you won't be able to turn them since they will never really bleed down.
Since you've already run the engine, go back and readjust them. This time there should be oil in the lifters. When they say that they will spin "easily", it doesn't always mean that they will spin VERY easily. If you can spin then with two fingers with a little effort, then they are ok. After adjusting one pushrod, wait until it spins BEFORE turning the engine to adjust the next one. Then, when they are all adjusted, turn the engine over BY HAND (lift the rear wheel and put the tranny in fifth gear, and pull the spark plugs, too) using the rear tire. If there are no unusual noises and it turns over easily, then you can start it up.
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