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Proper torque for manifolds on 1920 roadster?
Posted: Tue Oct 29, 2019 3:22 pm
by Jed
What is the Proper torque for manifolds on 1920 roadster?
Re: Proper torque for manifolds on 1920 roadster?
Posted: Tue Oct 29, 2019 4:11 pm
by Humblej
Same as a coupe or touring, hand tight with a short handled ratchet wrench. For head bolts torque matters, for most other bolts no.
Re: Proper torque for manifolds on 1920 roadster?
Posted: Tue Oct 29, 2019 4:15 pm
by DanTreace
Only a 3/8” thread, use a 7” long sm. handle ratchet , you’re only compressing the soft gland gaskets, if you have to use a fancy torque wrench, max of 15 lb/ft or so.
Re: Proper torque for manifolds on 1920 roadster?
Posted: Fri Nov 01, 2019 8:33 pm
by Jed
I use what I got. I happen to have one of those fancy torque wrenches from my young days.
Thanks for the help, Jed
Re: Proper torque for manifolds on 1920 roadster?
Posted: Fri Nov 01, 2019 10:42 pm
by Steve Jelf
You tighten a nut until just before it strips.
Re: Proper torque for manifolds on 1920 roadster?
Posted: Mon Nov 04, 2019 5:29 am
by D Stroud
Or, tighten it up until it strips, then back off half of a turn.

I know, it doesn't make sense, but that's one of the expressions that I grew up with from back in the early '50's, sort of like "jack up the radiator cap and roll another car under it", to describe a badly worn out (junk vehicle) vehicle.

Dave
Re: Proper torque for manifolds on 1920 roadster?
Posted: Mon Nov 04, 2019 11:51 pm
by TFan
The one I remember was " Tighten till failure then 1/4 turn" seems about right.

. Jim