Hi Everyone, I'm hoping that some knowledgeable Ferrari fan can give me some pointers. Thanks in advance! I have a 1978 308. I am trying to extract the pins that retain the distributer drive to the back of the camshafts. I tried driving them out with a punch but they didn't want to move. So I paused to consider options and ask for help and advice. I have torches - yikes. 20 ton press. lots of little ball joint mini presses. Pretty sure I have an oven at home. and some other stuff I would have put it in the press but I'd have to come up with the correct size of pin drive which might be a pain. The reason I'm doing this is because I bought some core cams and had Web Cams make them a bit hotter. The cores did not come with the distributer drives so I am transferring them over from my originals. Thanks again for any assistance!
You will want to cut a V slot in a block of 4x4 wood, long enough to rest the cam shaft into the V so it does not twist while supporting the pounding pressure. Drill a 1/2 inch hole into the wood block at the location where the pin is so it has a place to fall into. Position the camshaft in the V, with the pin facing up. Use a new punch with the appropriate size, and pound away. Heating it with a heat gun may help. I had to drill one out, once.
Thanks for your help and advice Yelcab. I did get them out yesterday. It is just a tight interference fit. I was worried about damaging the journals of the hollow cam. I had V blocks to support the cam well. After some attempts with a punch I used a press to push them out a bit then finished them with the punch. I read on another post here that the spline drives were a solid material in the cam. And that it's an interference fit in to the cam. I needed to use a puller to get them out of the cams. It all worked out. You do need to drive them out in a certain direction. On one side where the dowel pin goes through there is a hexagon shape instead of the hole to secure the dowel. Interesting. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
