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TR2/3/3A Old school valve adjusting tool...

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karls59tr

Yoda
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Found this the other day in my parts bin. Does it need a Whitworth or special socket. It seems like it requires a socket that is only 3/4" long to make it work? Most sockets I have are way too long. What am I missing?
IMG_20260524_160538.jpg
 
Same one on eBay (without parts)
Maybe the socket gets lost easy, like the nr 10 ones

Newer version ; Gunson Clikadjust Tappet Adjuster G4094
www.gunson.co.uk

Gunson G4094 Clikadjust Tappet Adjuster

Gunson Micrometer Tappet Adjustment Tool makes valve clearance adjustment simple and precise on pushrod and OHC engines, improving overall engine performance.
www.gunson.co.uk www.gunson.co.uk
See specs; 1/2"D for any size lock nut.
Looks like it needs an additional socket
 
Last edited:
BigGreen said:
Same one on eBay (without parts)
Maybe the socket gets lost easy, like the nr 10 ones

Newer version ; Gunson Clikadjust Tappet Adjuster G4094
www.gunson.co.uk

Gunson G4094 Clikadjust Tappet Adjuster

Gunson Micrometer Tappet Adjustment Tool makes valve clearance adjustment simple and precise on pushrod and OHC engines, improving overall engine performance.
www.gunson.co.uk www.gunson.co.uk
See specs; 1/2"D for any size lock nut.
Looks like it needs an additional socket
Click to expand...
 
Thanks for responding. This is even more of a puzzle? Where can you buy a 1/2" drive socket that needs to be 3/4" long in order to adjust the valves on a TR3???
 
These things have been around forever and never really gained popularity. If you use one, you still need three hands to use it easily, just as with the screwdriver, wrench, and feeler gauge. So, as I see it, it doesn't solve a problem.
 
karls59tr said:
Thanks for responding. This is even more of a puzzle? Where can you buy a 1/2" drive socket that needs to be 3/4" long in order to adjust the valves on a TR3???
Click to expand...
Never seen any but a lathe could easily shorten one, or a grinder, but that would probably take a looong time.
 
TFB said:
Interesting tool but I think a box end wrench ,screwdriver and checking with feeler is easier.
Tom
Click to expand...
Exactly. That's the way i I normally adjust the valves. I remember buying this tool off ebay years ago. Now that it turned up I thought I would try it out. I dont know if there actually is a 3/8 drive socket with a 1/2" opening where the socket is 3/4" long ???? Most of my sockets are 1@1/2" in length. You would need a socket that is...... 3/4"in length.... in order for the socket opening to fit over the adjustment nut? I don't think there is such a socket. Strange.
 
karls59tr said:
I think the tool was made in England??
Click to expand...
I also have a similar tool for adjusting the valve clearance. For me, it’s easier to use a screwdriver and wrench.
By the way, the one I have was made in the USA.
IMG_5611.jpeg

IMG_5612.jpeg
 
karls59tr said:
Did you ever try using this tool? If so what socket did you use? Like you I just use a wrench and screwdriver but the inability to find an appropriate socket is what baffles me?
Click to expand...
I haven’t used it in years but I think I used a 1/2” (3/8” drive) regular socket.
 
BigGreen said:
Same one on eBay (without parts)
Maybe the socket gets lost easy, like the nr 10 ones

Newer version ; Gunson Clikadjust Tappet Adjuster G4094
www.gunson.co.uk

Gunson G4094 Clikadjust Tappet Adjuster

Gunson Micrometer Tappet Adjustment Tool makes valve clearance adjustment simple and precise on pushrod and OHC engines, improving overall engine performance.
www.gunson.co.uk www.gunson.co.uk
See specs; 1/2"D for any size lock nut.
Looks like it needs an additional socket
Click to expand...
I bought one of these, years ago. I challenge the use of 'precise'.
 
I have three of these. Two Snap-On's and a Stanley. They both use a special socket (three different sizes, 1/2" is the hardest to find.) which all of mine have . I read that they were used in the aviation field to adjust valves on rotary piston plane engines in the 30's and 40's. I've used them on my MGB but a screwdriver and offset box wrench works just as well maybe better.
 
abubba said:
I have three of these. Two Snap-On's and a Stanley. They both use a special socket (three different sizes, 1/2" is the hardest to find.) which all of mine have . I read that they were used in the aviation field to adjust valves on rotary piston plane engines in the 30's and 40's. I've used them on my MGB but a screwdriver and offset box wrench works just as well maybe better.
Click to expand...
Thanks for the info. I did not know they were used in the aviation field. It would seem that to use this tool (1/2") on a TR3 the socket would have to be only 3/4" in length????
 
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