Farm Equipment - 301 exhaust manifold torque

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301 exhaust manifold torque

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=148608
Printed Date: 02 Aug 2025 at 11:11pm
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Topic: 301 exhaust manifold torque

Posted By: automaticdave
Subject: 301 exhaust manifold torque
Date Posted: 19 Mar 2018 at 11:35am

I looked in the op-manual and the "it" book and having trouble coming up with the correct torque on a 8010. Would 50 lbs be too much? Thanks Dave

Replies:

Posted By: injpumpEd
Date Posted: 19 Mar 2018 at 1:02pm

aren't they 1/2" bolts? It seems to me the 426 using 1/2" bolts are at least 75 ft lbs. Torque them down evenly in small steps. 25,50,then 75.

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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!

Posted By: farmboy520
Date Posted: 19 Mar 2018 at 1:19pm

The 8010 is the 301 engine

Posted By: automaticdave
Date Posted: 19 Mar 2018 at 1:39pm

7/16" bolta

Posted By: injpumpEd
Date Posted: 19 Mar 2018 at 3:50pm

I know the 8010 is a 301, I was comparing, thinking the 301 used the same exh manifold bolt size. 7/16 bolts would torque to 44-49 on early ones with lock tab washers, and self locking bolts are torqued to 30 ft lbs on earlier tractors to 7000 per my IT since it's handy. Later book calls for 46 ft lbs on 7010/7020.

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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!

Posted By: automaticdave
Date Posted: 19 Mar 2018 at 3:58pm

I'll give er 45 lbs! Thanks guys