Replacing timing gear

Joe KCMO

Joe KCMO

Senior Member
Is it possible to replace a press on timing gear without removing the cam shaft? The gear on the engine is a press on aluminum.
 
Joe:
I believe JM on this site has done it on his 35
I am sure he will show up here with his list of things that worked for him.

BILL W
 
There are some ways to remove the camshaft without removing the lifters. One way is to remove the heads and wedge the valves open so the lifter can be raised off the cam lobes. That was described by Bruce Lancaster http://www.jalopyjournal.com/forum/showthread.php?t=69249. Another similar way without removing the heads, is to place a piece of flatstock between the lifter and valve stem end, raise the valve as far as it'll go by turning the cam, and use the flatstock sorta as a bridge by placing 2 wedges on either end of the flatstock. There was a tool that was once made that clamped onto the front of the block to remove and reinstall the pressed on gear but I think it was quite expensive and a bear to use. I think it's easier and preferrable to remove the shaft to press it on the bench.

Jack E/NJ
 
Joe KCMO said:
Is it possible to replace a press on timing gear without removing the cam shaft? The gear on the engine is a press on aluminum.
Click to expand...

Joe, It is definitely possible. Last Feb. I removed a stripped press on type fiber gear and installed a press on aluminum gear without removing the cam. This was done on a '35 21 stud engine. I came up with a procedure and made a couple simple tools to accomplish this. I will send you a PM with instructions and pictures tomorrow. Gotta get out now and get my snow removal equipment ready for a workout. :(
 
Would you be able to make a photocopy of the info? I would be willing to pay for the effort and shipping.
 
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I pressed on an aluminum gear when I rebuilt the engine. The timing mark on the aluminum gear was almost impossible to see. The engine runs strong but seems to want more timing. Now that it is together, I know of a way to determine if I put it on correctly. I will match the aluminum gear to the fiber gear I took off. If it is not right, that is why I am asking. Trying to determine what I am getting myself into.
 
Joe KCMO said:
I pressed on an aluminum gear when I rebuilt the engine. The timing mark on the aluminum gear was almost impossible to see. The engine runs strong but seems to want more timing. Now that it is together, I know of a way to determine if I put it on correctly. I will match the aluminum gear to the fiber gear I took off. If it is not right, that is why I am asking. Trying to determine what I am getting myself into.
Click to expand...

Joe, There should be a mark (line) on the steel insert of the aluminum timing gear. That mark lines up with a mark (line) on the cam hub. There are also marks that must line up on the timing gear and crankshaft gear. If all of these marks are lined up you should be ok. If you decide that the timing gear must come off and go back on the cam hub to get proper alignment, send me a PM and I will fill you in on how I did this without having to remove the cam. Was not an easy job but was much better than removing the heads, valves, lifters and cam to press the gear in place.
I just looked in my old Motor's Auto Repair Manual (fifteenth edition) and there was no information shown on replacing the timing gear. So I would also be interested in getting a scanned copy of those instructions from the ninth edition.
Richard Crow....could you please scan your info in Motor's and post same here for those of us who would like to download this into our files?? Thank you!!
 
Here is one I scanned. I hope it can be read. Randy
 

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