different rocker arms

[gulkster]

So I adjusted my clakkety valves last night. This was the first time I did this on the car, as the noise was getting to me, and I knew it deserved the adjustment. To my surprise, I found two distinctly different types of rocker arms: one type was smooth where the "elephant foot" treads, and the other was ribbed. I can't remember the placement of each type, but it was not in an obvious organization. Does this mean someone has rebuilt it? I'm guessing yes, and should I be afraid? I'm also guessing yes The owner I bought the car from didn't even know that it was an ROW, or that it had oil tensioner upgrades, turbo bottom valve covers, pop-valve for CIS intake thingy, etc. Someone loved this car, but the PO I got it from knew nothing about this car. My main question is, what else should I be looking into in terms of "was it done correctly"? Sorry for the long post, and thanks in advance for any help.
JJ

[cgarr]

Are you talking about this? The castings were a bit different over the years. I guess what you don't know will not hurt you as long as things check out, at least the things you can check without pulling the engine apart? Chances they got a set of rebuilt rockers and exchanged the originals then sometimes you end up with different rockers, not really a mismatch just a bit different casting.

[gulkster]

Thanks Craig. Everything that I have looked at with the car has checked out okay so far. It just seems strange to have two different castings of rocker arms. If you bought a new or rebuilt set, would they not all be the same? Maybe I'm fretting over nothing.

[cgarr]

They would not necessarily be all the same. Sometimes not all 12 cores you get in can be reconditioned so you take from another set to get a good 12 Most times, at least in my case when I recondition rockers the person sends me their rockers and wants the same ones back which they get.

[gulkster]

Thanks Craig. And the pictures finally loaded on my comp, and yes that pic is exactly what I was talking about. Thanks again for clearing it up. I'm a bit worried still, but maybe that's just me.