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66S
 Post subject: Big end bolt torque 1275
PostPosted: Thu Mar 22, 2012 4:24 pm 
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998cc
998cc

Joined: Wed Sep 13, 2006 7:26 am
Posts: 900
Location: Christchurch New Zealand
Hi guys,
Can somebody help me out here please. I neede the conrod bolt torque for a late model 1275 with 12 point nuts. My book says 46 ft lbs but it feels wrong.

Thanlks
Al
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drmini in aust
 Post subject:
PostPosted: Thu Mar 22, 2012 4:55 pm 
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religious status
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39757
Location: near Baulkham Hills, NSW
They are only 11/32" bolts on those motors, so I think 35 ft/lb is correct.
My Leyland book says 35 for all rod bolts except Cooper S which is 46.
My Gregorys 02 book covers 1275s up to 1978, it also says 35.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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GT mowog
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PostPosted: Thu Mar 22, 2012 5:06 pm 
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Mods rock!
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Joined: Fri Oct 03, 2008 9:02 pm
Posts: 5079
If you've torqued it to 46 ft/lbs, discard the nut and the bolt. Make sure they are NEVER used again.

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TheMiniMan
 Post subject:
PostPosted: Thu Mar 22, 2012 6:21 pm 
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Joined: Mon Sep 06, 2004 4:36 pm
Posts: 8606
Location: Brisbane
yep, 35

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.
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66S
 Post subject:
PostPosted: Thu Mar 22, 2012 7:12 pm 
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998cc
998cc

Joined: Wed Sep 13, 2006 7:26 am
Posts: 900
Location: Christchurch New Zealand
Thanks guys, I only tried one bolt and I will replace that one.
Regards
Al
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