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re-torque head (cap nuts)

jensen
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Posts: 1143
Joined: Tue Feb 12, 2008 2:51 pm
Location: netherlands, huizen
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Post by jensen » Fri Sep 24, 2010 12:48 pm

Hi,

After a complete tear down, the parts have to find there "place", and indeed the gaskets are suppressing a bit. Also the rings underneath the nuts deform under pressure (that's why you can say that they are used), and the nuts are deforming a bit. All these parameters working to one side (getting less pressure on the cylinder / head), and that's why you have to re torque.

Some nuts go 45 degrees, 90 degrees, some 180, and some more.

(btw, why not use the specified torque on the m6 nuts ?)

Jensen
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

e3steve
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Joined: Fri Oct 31, 2003 1:38 pm
Location: Mallorca, Spain & Warsash, UK

Post by e3steve » Fri Sep 24, 2010 1:47 pm

Because I don't possess a torque wrench (or the accessories) that can access that area, my ol' obsessive, clog-wearing, Northern European, flatlander, tulip-sniffing, windmill-dwelling, marijuana-smoking chum!

jensen
honda305.com Member
Posts: 1143
Joined: Tue Feb 12, 2008 2:51 pm
Location: netherlands, huizen
Contact:

Post by jensen » Fri Sep 24, 2010 2:19 pm

Hola Steve,

I'm so sorry, I forgot that there are no tool shops on the isla.
And using a common wrench with an simple hand scale isn't available ?

Torque (Nm) = distance (meter) * force (newton or kilo's * 9.81)

wrench = distance, force is measured by the scale, and there you go.....

I'm always very inventive when smoking skunk,

Jensen
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

e3steve
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Joined: Fri Oct 31, 2003 1:38 pm
Location: Mallorca, Spain & Warsash, UK

Post by e3steve » Fri Sep 24, 2010 2:33 pm

You slay me, J-man!

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Snakeoil
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Location: Upstate NY

Post by Snakeoil » Fri Sep 24, 2010 2:49 pm

I know this will not help Steve or anyone outside the US, but for what it's worth, Harbor Freight (fine tools made by prisoners in China) sells a digital scale that is great for things like measuring torque and other force related stuff. I initially got it to set up the steering head bearings on my road racer. Suzuki actually gives a spec measured off the end of the handlebar. Since then, I've used it for torquing bolts where my torque wrenched could not go and more mundane stuff like mixing things by weight. I've checked the accuracy and it dead on. It is bascially a digital fish scale.

Jensen could check his next weed purchase to assure he is not being ripped off.
regards,
Rob

jensen
honda305.com Member
Posts: 1143
Joined: Tue Feb 12, 2008 2:51 pm
Location: netherlands, huizen
Contact:

Post by jensen » Fri Sep 24, 2010 5:10 pm

Hi,

A hand scale is a meat or fish scale, a simple scale with two hooks, bases on a load cell, and of course digital read out. I use this for years now (my wife is still wondering were it is).
Steve, specially for you, a few pictures from our typical Dutch landscape, maybe this will inspire you a bit.

Jensen
Attachments
a closer look.JPG
my backyard.jpg
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

e3steve
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Posts: 2601
Joined: Fri Oct 31, 2003 1:38 pm
Location: Mallorca, Spain & Warsash, UK

Post by e3steve » Sat Sep 25, 2010 3:33 am

Aaaaah, the legality of Weed and the tolerance of the Dutch authorities; how about that? I'd wager that one couldn't drive past that field without eventually seeing double!! ☺☻!

And I don't even smoke (lifelong non-/anti-smoker).

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