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OP
Shade Tree Mechanic
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So I managed to source a useable exhaust manifold, thanks to Steve at the Filling Station. Woohoo! (If you recall, the flange where the exhaust pipe connected on mine had been repeatedly repaired and ultimately failed completely on the highway, almost resulting in a conflagration.)
I'm reassembling everything and and cannot find the torque settings for the four nuts connecting the intake to the exhaust manifold, or the bolts and nuts connecting the exhaust and intake manifolds to the engine.
Anyone got those numbers handy, please?
Thanks!
--
Jay
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Joined: Dec 2007
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ChatMaster - 4,000
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ChatMaster - 4,000
Joined: Dec 2007
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Typically there are no published torque settings for older vehicles like these. Most of us have done this type work so frequently that we just tighten things up.
My suggestion is that you should start with the torque value for Grade 2 hardware of the same size as the stud. After you have run the engine through 2 or 3 good heat cycles you should probably re-tighten the nuts.
Rusty
VCCA #44680
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Shade Tree Mechanic
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Former ChatMaster ChatMaster - 5,000
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Former ChatMaster ChatMaster - 5,000
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This does not have exactly what you're looking for, but it might help you figure out the "range" that you'll want. https://1931chevrolet.com/torque.htm
Bill Barker
Previous VCCA CHAT Administrator
(VCCA Member: 9802)
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ChatMaster - 2,000
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Jay, did you have your new manifold decked at the machine shop. Many times these old manifolds are warped which causes them to leak or spit the gasket out causing more warping and even burning of the exhaust ports. Not to enjoin vacuum leaks and poor running too. It’s very cheap insurance to get the manifold perfectly level.
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Joined: May 2012
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ChatMaster - 4,000
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ChatMaster - 4,000
Joined: May 2012
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Jay, did you have your new manifold decked at the machine shop. Many times these old manifolds are warped which causes them to leak or spit the gasket out causing more warping and even burning of the exhaust ports. Not to enjoin vacuum leaks and poor running too. It’s very cheap insurance to get the manifold perfectly level. agree, had my manifolds machined flat for the mounting surface and had the head machined flat in the mounting area as well.
AACA - VCCA - Stovebolt - ChevyTalk
Love the Antique Chevrolet's from 1928-1932
The Beauty, Simplicity, History, and the Stories they Tell
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Joined: Sep 2019
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Shade Tree Mechanic
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OP
Shade Tree Mechanic
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Thanks for the good idea! I am a day or two away from finally assembly (waiting for some doodads to arrive from Steve at the Filling Station) but it will check for flatness today.
Hey, my old (trashed) exhaust manifold had a flared exhaust pipe mated (as best as they could) to the craptastic flange. My "new" exhaust manifold flange is perfect. Does the exhaust pipe slip INTO the 2" hole in the flange, or does it mate UP TO the flange, utilizing the flared exhaust pipe?
--
Jay
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Joined: Nov 2015
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Oil Can Mechanic
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Oil Can Mechanic
Joined: Nov 2015
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Do you have the donut gasket from TFS Part# EX-200?
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Joined: Sep 2019
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Shade Tree Mechanic
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OP
Shade Tree Mechanic
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Do you have the donut gasket from TFS Part# EX-200? They are on the way. -- Jay
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Shade Tree Mechanic
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