Exhaust stud extraction
Club Member
Joined: Apr 2016
Posts: 11,578
Likes: 8,406
From: Inland NW
Looks like an engine that sat for a long period, possibly in an uncontrolled storage situation.
Seen it many times on engines that did not run for 2 years, sitting outside in a northern state. Condensation and rust in a cylinder.
If it were me, I would pull it, and knock the rust down with a quick ball hone job. It's probably fine.
Seen it many times on engines that did not run for 2 years, sitting outside in a northern state. Condensation and rust in a cylinder.
If it were me, I would pull it, and knock the rust down with a quick ball hone job. It's probably fine.
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Intermediate
Joined: Jul 2024
Posts: 32
Likes: 10
From: south dakota
Wow that is shocking to me! Its always been garage kept and my old man cleaned it religiously.
But, we do live in Iowa and South Dakota and the garage is not heated so its gets chilly in the winter.
But, we do live in Iowa and South Dakota and the garage is not heated so its gets chilly in the winter.
Last edited by shea07flhx; Jun 1, 2025 at 07:34 AM.
Seasoned HDF Member
Joined: Jan 2011
Posts: 157,518
Likes: 57,069
From: Michigan 15 Minutes East Of Hell
You won't see a "remarkable" improvement going to a 103" ... Might consider this option ... Good Luck
https://www.fuelmotousa.com/i-238519...sfl5E__NAMo8MQ
https://www.fuelmotousa.com/i-238519...sfl5E__NAMo8MQ
Stellar HDF Member
Joined: Sep 2017
Posts: 2,144
Likes: 577
From: memphis
send the heads and jugs to hillside and let scott work his magic. he can get that stud out and give those heads a street port and a compression bump and bore the cylinders to a 107. give him a call and let his set you up according to your riding style.
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Intermediate
Joined: Jul 2024
Posts: 32
Likes: 10
From: south dakota
Admittedly I pulled the head off while my service manual was still being shipped. It arrived a few days ago and Im reviewing the procedures for reinstalling the head. Step 30 has you install the pushrods, but step 31 has you install the rocker arm support plate requiring you to find top dead center. My engine is still in the frame so I would have to cover the top of the intake lifter while rotating the engine. Idk Im kind of confused
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,921
Likes: 8,027
From: poway
They are all 5/16x18. Bolts are sized by the threads and not the heads.
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Intermediate
Joined: Jul 2024
Posts: 32
Likes: 10
From: south dakota
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that JIm's tool is exactly what i use and it works GREAT!! you just have to take your time. I have done LOTS of these and as always some are harder to do than others, but to me having that tool was worth every penny it cost to buy it. I understand its not neccessarily for the home mech, but for a pro, it's a must have!!!
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