Mystery Rocker Arm

[Flying10uk]

Does anyone recognise what engine this rocker arm might, possibly, be for, please? I did wonder if it might be for an aircraft engine but I'm not so sure now. Many thanks.

[Sapper740]

That looks very similar to the rocker arms on a 1964 Volkswagen Beetle I once owned.

[Low & Slow]

The forked end for a looped push rod is interesting.

[USGI]

Just a guess, but more likely a rocker from an OHC engine that's missing the roller and pin. - Bob

But, here's a link showing similar from a pushrod type aircraft radial:

Rocker Arm Jacobs R-755 Radial Engine Vintage Aircraft Spare Steampunk | eBay

It's on eBayUK - item#323806811562 if you can't get it to open.

[Low & Slow]

Cam roller... sounds pretty plausible, and more likely.

[Flying10uk]

Thanks for the replies chaps. It did come with a few aircraft related bits, hence I thought that it might be aircraft related.

[browningautorifle]

It did come with a few aircraft related bits

I would have thought maybe it came from a crashed aircraft local to you, you guys had enough to choose from at one point.

[Sapper740]

The forked end for a looped push rod is interesting.

I believe the forked end is to hold a roller which would then make this rocker arm from an OHC engine. Pushrod rocker arms have a 'cup' on the end for the pushrod to fit into. I think you got it right in your subsequent post Low & Slow, the rocker arm is missing the cam roller. You find cam rollers when the cam lobe is directly contacting either the lifter or the rocker arm. Since this rocker arm utilizes a cam roller, it must be from an OHC engine unless there's some sort of valve train I'm unfamiliar with.

[Low & Slow]

Pushrod rocker arms have a 'cup' on the end for the pushrod to fit into.

All I've seen do, but I know next to nothing about aircraft engines and the plethora of small engines. Cam roller for the win!