special bolts?

[theothergarth]

Of the 5 bolts (per side) that hold the rocker arm rail down (sb) there are 2 bolts on each side with a small hole drilled through the head of the bolt. What is the purpose of these bolts? I guessed at first it was something to do with the oiling, but I don't know how if that's true. When I took the heads apart the bolts weren't used in any order I could tell....I think three with the holes were used on one side and 1 on the other. When I put it back together I used them in the holes one in from each end.....just seemed right to me.

 

[cudamark]

Haven't seen of those......do you have a photo?

 

[oliver]

sure it wasnt for safety wire?

 

[swinger340]

Have had a lot of small blocks apart, and never seen what you are describing.

 

[theothergarth]

I don't have any pics, but safety wired bolts was what it reminded me of. They don't appear to have any other use, but I don't think I will wire them up.

 

[67Dart273]

What are the markings on the tops of the heads? I'd guess someone subbed some aircraft hardware, and I agree "safety wire."