Topic: exhaust flange torque

[lash]

69 cb750... anyone know what the torque should be for the exhaust flange bolts?

[Bodi]

Pretty sure they are 6mm - steel into the alloy head... so not much or you strip the alloy threads. There is a spec in the common service manual but I don't torque these to a spec, I tighten until the header gasket gives a little and then check for looseness after a few heat cycles. I haven't had them come loose after doing this.

[lash]

Makes sense, thanks

[Deltarider]

Just tighten by hand until gaskets are compressed somewhat and then stop. In case you have to redo it a bit, you'll still have gasket left that still can be compressed a bit further. Did it like this myself the other day. Torque wrenches on 6mm is madness, a mistake is easily made. It's not worth it.

[jonda500]

Just tighten by hand until gaskets are compressed somewhat and then stop. In case you have to redo it a bit, you'll still have gasket left that still can be compressed a bit further. Did it like this myself the other day. Torque wrenches on 6mm is madness, a mistake is easily made. It's not worth it.

+1!!!!

[Don R]

 Nonsense, tighten till it strips and back it off a half turn. That said, someone ripped the thread lug off a head recently, that one was apparently bottomed out, beware of that issue.
 In all seriousness I agree with the above advise.

[Airborne 82nd]

Have you considered replacing them with studs & nuts like my 1978 750K But that's just me.
imho

[lash]

No, I'm trying to stay as close to stock as I can.