Identifying self-aligning roller rockers.

[Methuselah]

Given an arbitrary set of roller rockers, how can one determine whether they are self-aligning or not?
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Outdoor Sex

 

[Hu Ryde]

Got any pics of them?

 

[Methuselah]

Possibly this evening. Im looking for general principles however.

The rocker arms in question are Scorpion 1.6 rollers for Small Block Chevy with 3/8" studs. I believe they are available as self-adjusting and non-self-adjusting. No part number is available.

Im sure the difference is quite obvious, I just dont have any idea at the moment.
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NEW MEXICO MEDICAL MARIJUANA

 

[MikeRenz]

if the roller tip portion has washers on either side to make sure it stays on the valve stem....they're self aligning.

 

[Methuselah]

Here is an image of a stock rocker arm next to the Scorpion roller rocker, with the front of the rocker that rests on the valve stem profiled in blue:

The profile of the stock rocker arm seems to verify what Mike said about washers for roller rockers that are self-adjusting.

Here are additional comparison photos:

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Toyota corolla e90

 

[MikeRenz]

i don't see the washers in any of those pictures. Look at these crane golds:

see how the valve stem is sandwiched between two washers...keeping the tips on the stem?

 

[Methuselah]

i don't see the washers in any of those pictures.

Right, I failed to state the conclusion of the comparison explicitly...which is: "these particular Scorpion rocker arms are NOT self-aligning".

Thanks for the additional pic showing what self-aligning roller rockers look like.
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Teen japanese