Cylinder head

Fanfan26 · Nov 16, 2017

What is the good order of tightening ?
This ? (classic bike)

Or this ? (french thechnique book)

Thanks

oldbeezer · Nov 16, 2017

I'd go French, everything I remember concerning torquing heads started in the middle and worked out to the edges.
However I could very well be wrong in the case.

grandpaul · Nov 16, 2017

The lower illustration is more correct. You MUST start in the middle and work your way out.

gortnipper · Nov 16, 2017

This is the sequence in the shop manual.

http://rocbo.net/technique/norton_workshop/004.html

Fanfan26 · Nov 16, 2017

It is like that I always made on my 3 commandos.

But by seeing the image of classicbike and that of the NOC GB I asked myself questions.

Thanks you very much.

ashman · Nov 16, 2017

Just go by the bible, I mean workshop manual and you can't go wrong.

Ashley

gortnipper · Nov 16, 2017

Except where it spits blasphemy of 80 ft lbs, then refer the Prophet LAB.

ashman · Nov 17, 2017

gortnipper said:
Except where it spits blasphemy of 80 ft lbs, then refer the Prophet LAB.

And where does it say that on head bolts, my manuals don't and I have 2 different manuals, unless your talking about the clutch nut but mine says 70 ft lbs for that nut, but hey maybe at the time they through it was right.

Ashley

Fanfan26 · Nov 17, 2017

Yes Ashley it is what I'm doing for decades, but I admit that having seen these drawings on classicbike and the NOC GB I had a doubt.

Thank you for your answer.

Mr. Rick · Nov 17, 2017

I had a rough time keeping track of this and made myself a cheat sheet. Whether it applies to other heads, I cannot say.
Maybe it will help someone else.
(Sorry I can not figure out why the image rotated sideways, or how to turn it back.)

Fanfan26 · Nov 17, 2017

Thanks you Mr Rick il is right for me.

Cylinder head

Fanfan26

oldbeezer

grandpaul

gortnipper

Fanfan26

ashman

gortnipper

ashman

Fanfan26

Mr. Rick

Attachments

Fanfan26

Similar threads