Well, the very postive sign is that you can turn the cam to the position where it needs to be, meaning there is no piston/valve interference present.
If you are not able to get a wrech on the the cam shaft itself without removing the oiler tubes The only other way I can think of to turn and hold the cam in position is to remove the sprocket and use a wrench that fits snugly over the end of the shaft where the sprocket goes...the wrench should catch on the woodruf key enabling you to turn the cam.
Before you do that, have your sprocket placed correctly inside the chain (lign up your paint marks) and be ready to slide it on the cam. There should be enough room to get it started since the wrench head is narrow.
Also Dave's suggestion to take the rockers (cam followers) out is the by-the-book method I don't think it is a viable solution right now.
Somebody correct me if I am wrong here but you have to turn the engine over to unload the respective valve spring in order to remove the rocker. Besides that a spring compressor is needed.
By suggesting what I did I am trying to give the easiest solution possible.
Also Dave's suggestion to take the rockers (cam followers) out is the by-the-book method I don't think it is a viable solution right now.
Somebody correct me if I am wrong here but you have to turn the engine over to unload the respective valve spring in order to remove the rocker. Besides that a spring compressor is needed.
By suggesting what I did I am trying to give the easiest solution possible.
With the sprocket off of the cam the cam can be rotated both clock and counter wise, independent of the crank. Alternating directions will allow all the followers to be removed tut suite, eliminating the kick-back issue he's having.
I think you can only turn the cam so far, some of the pistons will be at or near TDC with one or both valves closed, not allowing you to turn the cam far enough (without turning the crank to change piston position) to unload the springs and to remove the followers.
The followers on my engine would not come out unless the lobe was pointing nearly all the way up, it is pretty tight in that area.
Don't mean to argue or split hairs with you, this is just what I experienced when I worked on my engine.
I think you can only turn the cam so far, some of the pistons will be at or near TDC with one or both valves closed, not allowing you to turn the cam far enough (without turning the crank to change piston position) to unload the springs and to remove the followers.
Start with the cylinder closest to lobe full vertical. Pull the follower. Rotate the cam whichever direction brings the next closest lobe to vertical. Pull the follower. Reverse rotation to the next closest lobe and so on. The valves at highest lift will have the piston lowest in the bore, no chance for interference, the valves at lowest lift are the closest to vertical and the first removed. The more of them you remove the more leeway you give yourself to get to the next...
Brent, please trust me on this. Borrow my spring compressor and remove the rockers. I fought this battle and then followed Dave's advice and removed the rockers. The job went so smoothly after that it was unbelievable. If I ever have to do this again I will remove the rockers in the beginning and save myself a ton of heartburn.
Brent, please trust me on this. Borrow my spring compressor and remove the rockers. I fought this battle and then followed Dave's advice and removed the rockers. The job went so smoothly after that it was unbelievable. If I ever have to do this again I will remove the rockers in the beginning and save myself a ton of heartburn.
Brent, please trust me on this. Borrow my spring compressor and remove the rockers. I fought this battle and then followed Dave's advice and removed the rockers. The job went so smoothly after that it was unbelievable. If I ever have to do this again I will remove the rockers in the beginning and save myself a ton of heartburn.
+1
This is a good example of a "shortcut" which actually makes the job more difficult and hazardous. I know a spring compressor is expensive but they can be borrowed, or a less expensive version can be found. I paid a lot for mine, but it has paid for itself just in perfectly good rockers I got at junkyards (when good fairly low mileage cars could be found) for 5 cents on the dollar.
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