Ok, I know the gear is only 61.00$ but since I am not made of money... The driven gear in my engine does show wear. Maybe 1/4 thickness wear. Leaving 3/4 thickness. The triple gears are all in good shape.
I figure I will have this car maybe 20-30 years before the pearly gates. My cars do not get driven a great deal and don't expect to more than that. Maybe some long tours now and again. The car will go to a grandkid which could sell it the day after I'm dead. Being that the engine is a 26, that means it took 90 years to become this worn.
Advice please as to how much longer this gear could give me good service or give me headaches.
Tyrone, the gear would probably be ok because it is only used when the transmission in in low or reverse and is not used in high gear. Better original gears are, however, widely available so you may want to consider replacing your worn gear with a better one. Lang's has driven gears also.
Great advice Stephen. Thank you for the lang's link.
I doubt very much if it will actually fail, but it could be a little noisy, but it does not sound like you are looking for perfection, so I recommend you use it.
I'm not sure, but I don't think the hardening goes all the way through, so maybe the wear will accelerate when it has reached as much as 1/4 way through.. Considering the effort needed to replace it in the middle of the transmission, I wouldn't risk using your worn out gear.
The later one piece triple gears utilize a narrower tooth face than the 3 piece triple gears and as such, the wear pattern can leave a pronounced step on the driven gear tooth faces. For this reason is a good idea to replace a badly worn driven gear. Some driven gears are badly pitted due to this reduced contact area and should be replaced as well.
Bottom line, do it right while you've got it apart and your grandkid will be able to continue enjoying it long after you're gone. There are no doubts or questions when the best possible parts are used. That gear sounds VERY used up.