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Old 10-16-2004, 07:02 PM
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guide plates

Guys I have a seemingly simple question. I have stepped guiedplates for my vortec headed small chevy. Question, what direction are they supposed to be installed. With the guide high or low. My machine shop installed them but it apears they may be backward. they installed them with the slots up. I have just installed roller tip rockers and when setting the lash I realized some of the rockers aren't straight on the valve tip. It seems to be caused by the guides forcing the pushrod offcenter. Any photos would be appreciated.
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Old 10-16-2004, 07:39 PM
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Most of the angled ones I`ve seen have "this side up" stamped on them. and best of my knowledge, they are suppose to angle up.
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Old 10-16-2004, 07:45 PM
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I heard a few different things that don't exactly agree.

I have heard the stepped guide plates are for use with roller rockers, not stock type roller tip rockers. I don't buy into this too much. I have always used the straight guide plates with roller rockers, and had no problems.

The stepped guides should have the step facing up.

You have to center the guide plates before you tighten them down. Try to get them centered over the valve tip. The good quality screw in rocker studs have a tapered shaft that aligns them. You don't have to center them. The type you have have to be.
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Old 10-16-2004, 07:48 PM
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Quote:
Originally posted by lluciano77
I heard a few different things that don't exactly agree.

I have heard the stepped guide plates are for use with roller rockers, not stock type roller tip rockers. I don't buy into this too much. I have always used the straight guide plates with roller rockers, and had no problems.

The stepped guides should have the step facing up.

You have to center the guide plates before you tighten them down. Try to get them centered over the valve tip. The good quality screw in rocker studs have a tapered shaft that aligns them. You don't have to center them. The type you have have to be.
How do you know the plates are centered while tightening the studs without the rockers installed?
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Old 10-16-2004, 07:56 PM
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You mock up the rockers. You can rock them side to side to see the play that will be present. Aim for the center of the travel, and tighten the guidplates down. It is pretty crude, but it works.
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Old 10-16-2004, 07:58 PM
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Quote:
Originally posted by lluciano77
You mock up the rockers. You can rock them side to side to see the play that will be present. Aim for the center of the travel, and tighten the guidplates down. It is pretty crude, but it works.
Thanks I will try that. I finally found a pic with these type guides and I have concluded that they are installed properly. If this doesn't work I may use the die grinder to open the plates a little. Does anybody see a problem with this?
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Old 10-16-2004, 08:00 PM
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Don't do that, it will just make them harder to adjust. Mock the rockers up like I was saying. There should be enough play to get your center mark.
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