Lifters single verses double lock

[1930 coupe]

...

[Juggler]

I went single locker as the feet were bigger. I wasn't worried about the feet wearing, more the cam.

As a wise man once said, if something is adjustable, it will eventually need adjusting.

Mine need adjusting. Thinking about threadlock or just putting a ding in the threads. Will probably go with the latter - less cleaning up and cheaper.

Cheers

Juggs

[Rowdy]

The cam and foot wear problem is mainly with the double locks having an undersized foot causing the edge of the foot to dig into the heal of the cam. I did not have access to that info several years before I bought mine. Thankfully I never installed them in an engine. I thought about selling them when I found out, but my consious would not let me and it was past the 90 days to send them back. I am instead using the bolts and lock nuts to convert B lifters to adjustable double locks. That is the best use for them. I pitched the rest of the lifters in the scrap iron as that is about all they are worth. No experience with the current single locks so I can not comment. It was reported in a different post that the foot size has recently been increased to stock dimensions, but I have not seen or heard any confirmation of this. Rod

[Tom Wesenberg]

I'm in the same boat as Rowdy. Years ago I bought a set of double locks without knowing the foot was too small. Luckily they are still new in the package in my dresser drawer. When I rebuild my own engine I'd like to use original valves and tappets.

[Russ/40]

How many years is it going to take for this misconception to go away. They both have the same foot size now, and have for a number of years.

[Rowdy]

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Since I have not bought any in several years I did not know they did. Just glad I alteast found a use for some of the parts from them, although it worked out to be expensive bolts. Rod

[Purdy Swoft]

Rowdy, you may need to shorten the B lifters before installing the bolts and lock nuts. Model B lifters are also longer than model A lifters and will be even longer when you add the adjustable bolts and lock nuts. It may be a good idea to shorten the B lifters to the same length as the double lock lifter, so that they don't end up too long. This may not matter if you use modern straight stem valves. Just a thought.

[Tom Wesenberg]

Originally Posted by Russ/40

How many years is it going to take for this misconception to go away. They both have the same foot size now, and have for a number of years.

I didn't know they are all made correctly now, but a year ago my friend bought a set of lifters and I thought they looked like a smaller foot. When I get back to his garage and compared them sure enough they were too small and struck the outside edge. He took them back and got a different set with the larger diameter.

[Rowdy]

Was planning on it. Abit of measuring and it looks like 2 1/8" long should be about right. Rod