probably stupid question- 1977 WR 360 head

I took the head off the 360 to put the head on that is bored for a compression release. The heads are identical (good). When you look at the underside of the head, the casting isn't symmetrical in that there is a "u" shaped casting on one side of the head and the other side its just straight. Should the "u" be on one side or the other? Is there a front/back to the head? The service manual doesn't say anything, so I'm assuming it doesn't matter. Just thought I'd check.

Thanks-

John

Are the fins any different for exhaust pipe clearance? That blob is on other heads as well.

Nope. Everything else looks identical.

Your probably going to want the Compression Release pointed away from the Pipe.

It's entirely there as a left over from manufacturing

Thanks. I thought it might be a manufacturing thing. It looks symmetrical, and being that the bike was 39 years old when I got it, I had no idea if the previous owners had oriented it right. So, I put the other head back on with the compression release off to the left side, rather than the right. Its easier to get at without the pipe there, although I have to reach across the bike to open it.