Rusty valvetrain components?


Information and questions on GL1000 Goldwings (1975-1979)
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Rank1
Posts: 4
Joined: Tue Dec 29, 2020 12:26 am
Location: Austin
Motorcycle: 1976 GL1000

Rusty valvetrain components?

Post by Rank1 »



Hey guys, I’m slowly but surely making progress on the GL1000 project. I took the valve covers off and noticed the intake valve components on both sides are rusty. The exhaust components aren’t, I’m assuming this is a sign of the bike sitting for a long time and no oil to coat the upper valve train. I’m adding pics. Based on the condition are these good to throw in a deruster and re-use? I looked up NOS rocker arms on eBay and they look worse than these. BTW I’m planning on doing head gaskets so I’ll be able to do a thorough cleaning of the head to get rust flakes/particles out. Thanks!
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Rambozo
Posts: 510
Joined: Sun Apr 01, 2018 8:36 pm
Location: Disneyland
Motorcycle: 1992 GL1500 Aspencade

Re: Rusty valvetrain components?

Post by Rambozo »

No problem, that is just cosmetic. Take it apart and give it a soak in evaporust or the like. The important part is the pivot bushing and that can't rust. Remove the rockers and give the shaft and the cam pads a polish with scotchbrite or very fine emery, steel wool, etc. Maybe dress the end of the adjuster that bears against the valve with an oilstone if there is rust or pitting there.
You're right, I bet it is from condensation from sitting for many years. Be sure to replace the timing belts before starting it. Also make sure the valves and pistons are free. There could be rust in the cylinders as well. :(
Rank1
Posts: 4
Joined: Tue Dec 29, 2020 12:26 am
Location: Austin
Motorcycle: 1976 GL1000

Re: Rusty valvetrain components?

Post by Rank1 »

Awesome, I appreciate the heads up. I can turn the crank by hand and everything moves, nothing stuck. Cylinders are getting compression. Timing belt is on the (long) list of things to replace.
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offcenter
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Location: Lake Hopatcong, New Jersey
Motorcycle: 99 Gl-1500 SE
76 GL-1000
77 Honda Trail 90

Re: Rusty valvetrain components?

Post by offcenter »

Could that rust be caused by a coolant leak?
George in Jersey.
99 Goldwing GL-1500 SE
76 Goldwing Gl-1000
77 Honda CT-90 "Trail 90"
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dingdong
Posts: 4024
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: Rusty valvetrain components?

Post by dingdong »

offcenter wrote: Sat Jan 30, 2021 12:26 pm Could that rust be caused by a coolant leak?
Not likely. Antifreeze prevents rust and corrosion.


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