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Old 07-03-2013, 08:03 PM
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Pushrod Position

I'm putting my new heads on tomorrow, and came across a dilemma. The manual says that the pushrods should go with their copper-coated top facing up. My either none of my pushrods have the copper coating, or it has worn off. So does it matter which way they go now?

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Old 07-03-2013, 08:05 PM
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Quote:
Originally Posted by Gus_hauler View Post
I'm putting my new heads on tomorrow, and came across a dilemma. The manual says that the pushrods should go with their copper-coated top facing up. My either none of my pushrods have the copper coating, or it has worn off. So does it matter which way they go now?

Thanks
Copper goes UP If the copper is gone. I would get new push rods as that is the old style.
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Old 07-04-2013, 07:59 AM
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agreed, I would get new ones

If you look hard you may be able to tell which end goes up. I orient the pushrods straight up in a box with a bunch of holes punched in it so there's no guessing which way I pulled them out.
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Old 07-04-2013, 08:36 AM
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Well, I'm really kind of irritated with my local engine machine shop. I meticulously marked every pushrod with a parts marker as I pulled them out. I put what position they were in, and which side was up. When I took my heads to the shop to be checked out, I also gave them the pushrods to inspect. I wanted them to make sure they were each still straight. The good news was that they were straight, the bad news was that the shop "cleaned" them, and it took all of my markings off.

What I've done is carefully inspected all of the pushrods in sunlight, and found some with traces of copper still on one end. (I couldn't see it under a flashlight, or a shop light, had to use sunlight) I noticed that there was a pattern of scale, or baked oil, or something on these pushrods. The end with the copper tips had this discoloration closer to the tip than the end that contacts the lifter. So for the ones that I couldn't see any copper on, I'm orienting them "dirty" side up to match the others.
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Old 07-04-2013, 06:13 PM
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I don't post here very often but I do make a living fixing these wonderful engines. I also put push rods in a box with holes punch in it to keep them straight but sometimes things happen and they do get mixed up. I don't like guessing but the budget doesn't always allow all new parts. I have guessed at which end goes up more than once when the copper was worn off and have never had a problem.
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