Re: 1960 Apache K10 build
Started on the trunnion upgrade for the rockers. This was a fairly simple thing to do. I got the kit from comp cams. The new design seems much better than the factory design, as it retains the needle bearings in case of a failure. It also has a snap ring on each end so they really cant walk out. Do I really think failure is that likely? No. It that big of a deal? Probably not. But I feel better knowing that I have one more piece done. For install, I used a socket on each end, and put them in the vise. With a small amount of pressure, they would pop right out. I had a couple different sets of rockers to choose from, so I ended up looking through them all and finding the least worn ones, and using those. I put them in my ultrasonic cleaner for half hour with some purple cleaner, and they came out clean and new looking. When I was inspecting them, I noticed the push rod cups on the rocker varied a lot in wear, even ones that came from the same head. Some were worn significantly more than others. I used the best ones I could find. Installation of the new parts was the reverse of taking the old shaft out. Just make sure to check for free movement once you have it together. If you put too much pressure on them from one side of the other, the shaft will bind. It took a little trial and error to find the sweet spot, but eventually I got a pretty good feel for it.
Pressing old shafts out
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