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Author Topic: CB350F Cylinder Sud Removal  (Read 1021 times)

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Offline lhemrick

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CB350F Cylinder Sud Removal
« on: March 30, 2015, 05:05:28 PM »
Is it possible to remove a cylinder stud from an engine after just removing the valve cover? The reason I ask is I have some oil weaping out from where the stud passes through the lower base of the cylinder bank into the lower crank case. I built the engine about four years ago would rather not take the engine apart again without trying any other simple fix first of course. Any one have any suggestions?
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Re: CB350F Cylinder Sud Removal
« Reply #1 on: March 30, 2015, 05:19:24 PM »
Use heat and penetrating liquid of some kind.  I would recommend using a stud puller as well to lessen the chance of snaping a stud off.  APE makes one.

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Offline calj737

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Re: CB350F Cylinder Sud Removal
« Reply #2 on: March 30, 2015, 05:45:22 PM »
It may be possible to do what you ask, but it's certainly not a good idea... The likelihood of snapping the stud is pretty high and that will create a lot more work. There's no way to apply heat to the stud at the block with the head still on the motor.
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Offline lhemrick

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Re: CB350F Cylinder Sud Removal
« Reply #3 on: March 30, 2015, 06:05:33 PM »
I just replaced a valve cover gasket because of a leak. Now I find this one. How is the oil getting out of there? It's after you get the engine hot and coming off throttle to idle it bubbles up around the stud.
« Last Edit: March 30, 2015, 07:18:20 PM by lhemrick »
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Offline lhemrick

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Re: CB350F Cylinder Sud Removal
« Reply #4 on: March 31, 2015, 04:15:29 PM »
Found the simple fix! Pulled the Valve Cover back off and retorqued the cylinder and stopped the leak!
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77 Honda CB750
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81 KZ750H2
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84 ZN700 Shaft

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Re: CB350F Cylinder Sud Removal
« Reply #5 on: March 31, 2015, 05:02:08 PM »
Excellent. I guess we assumed that had already been explored. 
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline lhemrick

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Re: CB350F Cylinder Sud Removal
« Reply #6 on: April 01, 2015, 03:04:28 AM »
That would have made sense but I was on my 24 hr shift looking for info or possible solutions for the next day. Got home and dove in and tried the torque solution. Never dreamed it would actually work! Thanks for the input!
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Don't give up; Rust is only Temporary!
77 Honda CB750
70 Honda CB350 twin
71 Honda CB350 twin
72 Honda CB350 Four
72 Honda CB175
81 KZ550C2
81 KZ750H2
82 KZ750M1 CSR
84 ZN700 Shaft
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