Re: Exhaust stuck on DOHC
Posted by LukeM on May 24, 2012; 12:23pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Exhaust-stuck-on-DOHC-tp4013027p4013425.html
Welcome again to our little MC playground.
I recommend PB Blaster. Squirt it on the nuts and as much of the studs as you can. Every hour or so, lightly rap on the studs and/or bolts with a hammer. The vibration will help loosen the crud little by little. Spray more PB Blaster, and repeat the process. In a day or so, you may be able to work it free. When they start to go, I recommend loosening until it binds, then tighten about a half turn, and loosen again.
If that doesn't work, you may have to use an impact wrench. There are some that use a hammer, and some are like the guns the tyre guys use in shops. I think, for the small nut size, a battery operated impact wrench/gun may be most beneficial. Some would say that judicious application of heat (from a heat gun, or a small torch) can help, but I'm not keen on that application so close to the engine fins. As is so well put in the Latin: Sit Mechanicus Cave. (Let the mechanic beware.)
I hope this helps. Let us know how it goes.
Luke M
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Exhaust-stuck-on-DOHC-tp4013027p4013425.html
Welcome again to our little MC playground.
I recommend PB Blaster. Squirt it on the nuts and as much of the studs as you can. Every hour or so, lightly rap on the studs and/or bolts with a hammer. The vibration will help loosen the crud little by little. Spray more PB Blaster, and repeat the process. In a day or so, you may be able to work it free. When they start to go, I recommend loosening until it binds, then tighten about a half turn, and loosen again.
If that doesn't work, you may have to use an impact wrench. There are some that use a hammer, and some are like the guns the tyre guys use in shops. I think, for the small nut size, a battery operated impact wrench/gun may be most beneficial. Some would say that judicious application of heat (from a heat gun, or a small torch) can help, but I'm not keen on that application so close to the engine fins. As is so well put in the Latin: Sit Mechanicus Cave. (Let the mechanic beware.)
I hope this helps. Let us know how it goes.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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