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JD 8100 with 8.1 exhaust manifold ?
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hinfarm
Posted 3/20/2023 20:02 (#10149963)
Subject: JD 8100 with 8.1 exhaust manifold ?



Amherst WI		The rear bolt is either missing or broken off on the manifold. I want to see what the deal there is but there is a heat shield covering the manifold.

It looks like the hood needs to come off and part of the air box. Is there an easier way to deal with this?
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Wildman99
Posted 3/20/2023 20:05 (#10149969 - in reply to #10149963)
Subject: RE: JD 8100 with 8.1 exhaust manifold ?


Odds are the bolt is broke. Pretty common with these. Good time to replace all of them. Some good penetrating oil and even better reverse drill bits are your friend
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flyboytoo
Posted 3/20/2023 20:16 (#10149989 - in reply to #10149963)
Subject: RE: JD 8100 with 8.1 exhaust manifold ?


ec. nebr.		The new updated bolt is way longer and has a spacer on the outside.
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fds
Posted 3/20/2023 20:18 (#10149992 - in reply to #10149963)
Subject: RE: JD 8100 with 8.1 exhaust manifold ?


Common problem easy fix. Deere has different length bolts with some spacer seems to last.
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OLDIRON
Posted 3/21/2023 03:11 (#10150293 - in reply to #10149963)
Subject: RE: JD 8100 with 8.1 exhaust manifold ?


Eastern Iowa		Manifold needs to come off. The two halves need to be separated and cleaned up. Have it machined flat and install with latest hardware and gaskets. This is the only way it will last in my experience.
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JTN
Posted 3/21/2023 06:32 (#10150358 - in reply to #10150293)
Subject: RE: JD 8100 with 8.1 exhaust manifold ?


MN		Had to use the washer/nut welder trick to remove a couple of broken ones on ours.The remaining ones we used air hammer socket adapter well lightly turn with a wrench,some were rusted half off.
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986ont
Posted 3/21/2023 07:22 (#10150427 - in reply to #10149963)
Subject: RE: JD 8100 with 8.1 exhaust manifold ?


mid western ontario		No there is no easier way, hood is heavy and awkward
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dvswia
Posted 3/22/2023 06:49 (#10151837 - in reply to #10150427)
Subject: RE: JD 8100 with 8.1 exhaust manifold ?


sw corner ia.		use wood blocks to help get it raised up. one guy can do it, but not like in nascar..
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