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BeezaBryan
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Which way the nuts go
#795002 01/06/20 6:38 pm
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Nick H Offline OP
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Are these on correct? they don't like to thread on the other way.
[Linked Image from i.imgur.com]

Last edited by Nick H; 01/06/20 6:45 pm.

1966 BSA Lightning
(2) 1967 Triumph "Choppa"s
1974 Indian ME125
1960 Harley Servi-Car
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Re: Which way the nuts go
Nick H #795005 01/06/20 7:34 pm
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Those are deformed thread lock nuts. Yes, they go on that way, hex down.

Re: Which way the nuts go
Nick H #795006 01/06/20 7:39 pm
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As an aside topic, would you recommend using some plain nuts when using Plastigauge to check bearing clearances?


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
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Re: Which way the nuts go
Nick H #795011 01/06/20 8:51 pm
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I always replace the nuts with new and use the old ones to first check the plastigauge.


1978 Bonneville T140E
1974 Trident
1970 BSA Thunderbolt
1971 Norton Commando
1972 Norton Commando
1973 Norton Commando
1974 Norton Commando
2018 Kawasaki Z900RS


Everything will be alright in the end. If its not alright, its not the end.
Re: Which way the nuts go
DavidP #795012 01/06/20 8:55 pm
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Originally Posted by DavidP
As an aside topic, would you recommend using some plain nuts when using Plastigauge to check bearing clearances?


I think this is why the supplier of the new steel capped A65 rods sell them with plain and lock nuts. You can measure bolt stretch or plastigauge with the plain nuts without destroying the locking nuts deformed thread.

Last edited by Allan Gill; 01/06/20 8:58 pm.

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Re: Which way the nuts go
Nick H #795035 01/06/20 11:53 pm
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Nick, a friendly warning, I would not use those nuts! I had this exact same condition when I rebuilt my Spitfire about 3 years ago. I thought to reuse the conrod bolts but wanted new nuts. I bought what was carried by Rabers for the job, they looked exactly like the nuts in your picture. It is clear from your picture that the nuts do not thread down on the bolts near far enough. They don't even begin to enter the locking portion of the thread. This was the same issue I encountered. I think you will run the high risk of them coming undone at a most inopportune time. I reused the old nuts with locktite. Has been fine ever since.
Fullminator.

Re: Which way the nuts go
Nick H #795039 01/07/20 12:47 am
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Thank you Fullminator for the concern. In the photo, I have not yet tightened the nuts down as I was unsure of their orientation. (Thanks DMadigan)
I have since torqued them and measured proper stretch on the bolts. I had no issues.
You must have had some defective nuts or bolts. It happens.

Last edited by Nick H; 01/07/20 12:49 am.

1966 BSA Lightning
(2) 1967 Triumph "Choppa"s
1974 Indian ME125
1960 Harley Servi-Car
Re: Which way the nuts go
Nick H #795122 01/07/20 11:36 pm
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The last thing you want to end up with is deformed nuts eh?

Re: Which way the nuts go
NickL #795129 01/08/20 12:21 am
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Originally Posted by NickL
The last thing you want to end up with is deformed nuts eh?


You can probably get by with the deformed nuts but a deformed rod might be a different story ohno


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project
1971 BSA A65 650 - Project
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