I have a 1919 tt truck putting in new rings rods pistons bands valves and tappets. Which tappets should I use 2 wrench or 3wrench ?
i like 3
I prefer the two wrench type. Besides being easier to adjust, the thin locknut on the three wrench type is eliminated. On more than one occasion, I have stripped the thread on a locknut and had to manufacture another nut by grinding down a full sized nut.
Allan from down under.
If the engine is down here is what I would do; install the cam and lifter of your choice. With the lifter riding the cam see how far down you would need to trim the lifter bosses so you can adjust the lifter when installed with out having to crank the motor over to lift the it up to get to the flats on it. Then drop it back down to check then back up to adjust....each time.
Non adjustable lifters...
The last time I rebuilt my engine (2010), I bought a new set of adjustable valve tappets, which I could not use, because the head of the nuts that screw into the tappets were so thick, I was unable to adjust them to the proper gaps even when I screwed them all the way in. When I compared the new adjustable tappets with my old ones I purchased in 1970, I found that the heads of the nuts were much thinner, enabling me to adjust them to the proper gaps. I ended up re-using my old tappets and scrapping the new ones. Hopefully this flaw has been corrected. Jim Patrick
I have yet to install a set that I did not have to shorten the valve stems.