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by Joske Vermeule, September 1
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Jun 14th, 2026
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Joined: Apr 2011
Posts: 103
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Apr 2011
Posts: 103 |
Does anyone know the type and size of the thread of the kingpin upper bolt?
1993 Plus 8 Connaught Green
Various older cars and motorcycles
Big American Bulldog
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Joined: Dec 2011
Posts: 486
Learner Plates Off!
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Learner Plates Off!
Joined: Dec 2011
Posts: 486 |
Hi Ian
I believe its 1/2"-16 BSF (if its the same as my 4/4Sport 2009) I don't think they changed the thread over the years.
Regards
Cain
Cain
Wolf Cafe Racer
4/4 Sport
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Joined: Nov 2007
Posts: 306
Learner Plates Off!
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Learner Plates Off!
Joined: Nov 2007
Posts: 306 |
Do you mean the bolt that the oiler or grease nipple is attached to. If so the threads have changed when grease nipples were fitted to the new type king pins. I had to have new bolts when I changed my front bushes and pins last year on my 1997 +4. David. 
1997 Plus 4, Metalic Blue.
2000 Toyota Yaris. (The Tardis)
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Joined: Apr 2011
Posts: 103
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Apr 2011
Posts: 103 |
Yes, it is the bolt with the hole for the oiler nipple.
1993 Plus 8 Connaught Green
Various older cars and motorcycles
Big American Bulldog
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Joined: Dec 2008
Posts: 22,362 Likes: 353
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 22,362 Likes: 353 |
Ask Melvyn Rutter. There are at least two threads.
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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