Headbolt torque

shadow44
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05 Mar 2013 20:31 #575504 by shadow44

Headbolt torque was created by shadow44

So.. stock 76 kz900. original head studs. book says 25ft lb. I have read on here 36ft lb. is better. should I go on to 36?
And should I re-torque, after the initial torque?

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pig9r
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05 Mar 2013 21:00 #575514 by pig9r

Replied by pig9r on topic Headbolt torque

I'll send you a PM with a link to manual. You need to torque them in the correct order also.

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shadow44
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05 Mar 2013 21:04 #575515 by shadow44

Replied by shadow44 on topic Headbolt torque

Thanks, but no link necessary. I already have it. did the proper order, and it says 25 like my hardcopy book. Just seemed a little loose at 25. I have seen where guys say they go 36, wondered if i should go to 36.

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pig9r
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05 Mar 2013 21:06 #575516 by pig9r

Replied by pig9r on topic Headbolt torque

Maybe 36 with APE studs. I wouldn't go any more with 35 year old bolts. Retorque after heat cycle then again at 500 miles.

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bountyhunter
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06 Mar 2013 01:00 #575577 by bountyhunter

Replied by bountyhunter on topic Headbolt torque

pig9r wrote: Maybe 36 with APE studs. I wouldn't go any more with 35 year old bolts. Retorque after heat cycle then again at 500 miles.

+1 I would not go above about 27 Ft-lbs on stock studs.

1979 KZ-750 Twin

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zed1015
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06 Mar 2013 06:28 #575604 by zed1015

Replied by zed1015 on topic Headbolt torque

42 lb with APE HD studs.
Stick to 25 lb with the std ones.
Run the bike then let it cool overnight and re-torque.
Re-torque again around 500 miles later.

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Headbolt torque

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