You need to have the cam sprocket bolted onto the front of the cam to
measure the end float. The cam is captured on the front bearing
housing between the shoulder on the cam and the sprocket's inner face.
- Tony
At 12:17 PM 1/25/2011, Gary Nafziger wrote:
>I'm assembling my tr-3 engine and don't understand this problem. I've put on
>the front plate, inserted the cam and bolted down the front cam
>bearing only to
>find I have at least 1/4 inch of end play. This is the same cam and front
>bearing i took off the engine. In looking down the tappet holes it seems the
>cam lobes don't line up "centered" on the holes when the cam is
>pushed all the
>way back but they do line up when pushed farther forward. Leading
>me to wonder
>if there's a spacer or something at the rear of the engine. The
>machinist had
>already installed the end cap/plug at the rear of the block so i can't see in
>there to see if anything is missing. I see one of the cam bearings has a set
>screw............but I assumed the front bearing controls the end
>float not the
>bearing set screw.
>
>
>any suggestions?
>
>gary n.
>
>
>
>
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