2 wrench valve lifters

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Dennis_Brown
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2 wrench valve lifters

Post by Dennis_Brown » Mon Oct 21, 2019 9:44 pm

What keeps 2 wrench valve lifters from backing off. I can see that with a lock nut they are more apt to stay in adjustment.


tman1913
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Re: 2 wrench valve lifters

Post by tman1913 » Mon Oct 21, 2019 10:01 pm

It is how the bolt is made
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Jerry VanOoteghem
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Re: 2 wrench valve lifters

Post by Jerry VanOoteghem » Tue Oct 22, 2019 7:50 pm

Dennis,

"What keeps 2 wrench valve lifters from backing off?"

To answer your question: Not much.

Have had a few friends with those, and the adjustments backed off. Yes, there is a locking method, but in what I've seen, it's not as guaranteed as the lock nut. I've never seen one of the screws as pictured above. I have seen a style that uses a locking type thread form, (the trade name for it escapes right now).


Roar_Sand
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Re: 2 wrench valve lifters

Post by Roar_Sand » Sat Nov 02, 2019 5:27 pm

Could it be "Root interference lock thread", as used on the Mopar "leaning tower of power"?


Jerry VanOoteghem
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Re: 2 wrench valve lifters

Post by Jerry VanOoteghem » Sat Nov 02, 2019 7:43 pm

Roar_Sand wrote:
Sat Nov 02, 2019 5:27 pm
Could it be "Root interference lock thread", as used on the Mopar "leaning tower of power"?
Roar,

Yes, that's what it is. Trade name is Spiralock. There's probably others too. https://www.stanleyengineeredfastening. ... /spiralock


Kohnke Rebabbitting
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Re: 2 wrench valve lifters

Post by Kohnke Rebabbitting » Sun Nov 03, 2019 3:46 pm

The lifter bolt shown in the picture, the slot will close up, or one side will brake off, NO FIX.

The best are BOBs, In IL.

They are made the way they should be. The bolts, nuts, and lifter body, laugh at a file.

As always, any brand of lifter, should be butt. None are perfect.

That is why some people say adjustable lifters loosen up, because the high spots wear off, and then they are loose.

Here are some pictures.


Herm
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Adjustable Lifters 007.jpg
Adjustable Lifters 005.jpg


Kohnke Rebabbitting
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Re: 2 wrench valve lifters

Post by Kohnke Rebabbitting » Sun Nov 03, 2019 3:49 pm

One more thing, you do NOT need 3 Wrenches, on lifters, with a lock nut.

Hertm.


Kohnke Rebabbitting
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Re: 2 wrench valve lifters

Post by Kohnke Rebabbitting » Sun Nov 03, 2019 3:55 pm

I just found, Bobs lifters.
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Bob's Antique Auto Model T Lifters 011.jpg
Bob's Antique Auto Model T Lifters 007.jpg
Bob's Antique Auto Model T Lifters 005.jpg
Bob's Antique Auto Model T Lifters 004.jpg
Bob's Antique Auto Model T Lifters 002.jpg


Jerry VanOoteghem
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Re: 2 wrench valve lifters

Post by Jerry VanOoteghem » Tue Nov 05, 2019 9:00 pm

Kohnke Rebabbitting wrote:
Sun Nov 03, 2019 3:49 pm
One more thing, you do NOT need 3 Wrenches, on lifters, with a lock nut.

Hertm.
Correct. And, you do NOT need to cut down your tappet guides in the engine block in order to adjust your tappets.

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Mark Gregush
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Re: 2 wrench valve lifters

Post by Mark Gregush » Wed Nov 06, 2019 11:34 pm

Ok so how do you keep the lifter from turning when you snug down the lock nut without using 3 wrenches? I have yet to see lifters that when down you could hold it with a wrench, maybe the flats were just peeking over the top. No you don't have to trim the lifter bosses, even if you know the secret to the threads per inch thing you still have to go thru several cycles to set them. But just taking a little off the top clears the way for adjusting without cranking the motor over to drop, check, turn again, adjust, drop to check etc.
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup

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