Author Topic: Head bolt torq value  (Read 325 times)

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Head bolt torq value
« on: December 03, 2022, 02:38:28 PM »
Are cylinder head bolts torq’d to 11foot pounds? Or am I reading this wrong?
What does +90* mean?



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Online Sye

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Re: Head bolt torq value
« Reply #1 on: December 03, 2022, 02:41:51 PM »
Torque to 11ft lb, then turn a further 90 deg or 1/4 turn 👍

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Re: Head bolt torq value
« Reply #2 on: December 03, 2022, 02:53:09 PM »
Ok thanks
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Offline guzzisteve

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Re: Head bolt torq value
« Reply #3 on: December 03, 2022, 03:27:14 PM »
The total is 35ftlbs, been checked doing it like they say. Do 3 stages, 11ftlbs -22ftlbs-35ftlbs- done' All 6 at same time on ea side.
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Re: Head bolt torq value
« Reply #3 on: December 03, 2022, 03:27:14 PM »

Online DAMMAG

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Re: Head bolt torq value
« Reply #4 on: December 03, 2022, 04:14:37 PM »
The total is 35ftlbs, been checked doing it like they say. Do 3 stages, 11ftlbs -22ftlbs-35ftlbs- done' All 6 at same time on ea side.

guzzisteve.  Do you torque them dry or are they oiled? The manual doesn't mention oiled by the look of it.

Damian.

Offline guzzisteve

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Re: Head bolt torq value
« Reply #5 on: December 03, 2022, 05:06:25 PM »
The nuts, washers & bolts been coming out of mineral spirits. I don't lube the stuff no. If you use stock metal gaskets it is only 1 torque, no re-torque.
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Re: Head bolt torq value
« Reply #6 on: December 03, 2022, 06:19:16 PM »
Are those stock head gaskets metal on a Norge? I’ll have to look closer. I would like only 1 torq!
I believe both sides passed the squish test.





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Offline guzzisteve

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Re: Head bolt torq value
« Reply #7 on: December 03, 2022, 06:43:44 PM »
Should be 3pcs metal all together.
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Re: Head bolt torq value
« Reply #8 on: December 03, 2022, 08:32:17 PM »
My exhaust header studs came out rather than the nut coming off.. I can’t get the nuts loose.. do I need new studs and nuts or can I at least temporarily just screw the stud/nut into the head?
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Offline guzzisteve

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Re: Head bolt torq value
« Reply #9 on: December 03, 2022, 08:41:47 PM »
If you have them out of the head, put in a vice & cut slice in nut w/dremmel not quite through then crack it w/chisel.
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Online John A

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Re: Head bolt torq value
« Reply #10 on: December 03, 2022, 10:26:30 PM »
Sometimes you can clamp a vice grips on the unthreaded portion of the stud and wind the nut off. If there is no unthreaded portion,I just grab it in the middle.
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Re: Head bolt torq value
« Reply #11 on: December 03, 2022, 10:39:42 PM »
As an aside, almost always when I've run into the "+90°" torque value, the fasteners are of the "one time use" variety.  I remember Ford cylinder head bolts were throwaway items and the head gasket set came with new bolts.

Guzzi may have a different idea about this.
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