Headbolt torque

shadow44
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Headbolt torque

05 Mar 2013 20:31

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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Re: Headbolt torque

05 Mar 2013 21:00

#575514

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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Re: Headbolt torque

05 Mar 2013 21:04

#575515

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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Re: Headbolt torque

05 Mar 2013 21:06

#575516

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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Re: Headbolt torque

06 Mar 2013 01:00

#575577

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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Re: Headbolt torque

06 Mar 2013 06:28

#575604

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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