Clean Cylinder head valves. Anyone try this?
#4
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Join Date: Nov 2004
Location: Tampa FL
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You can get carb parts cleaner in gallon paint cans that have a wire basket inside. Load the basket up with the valves and soak over night and call it done. I wouldn't risk messing up the face of the valve or the stem by doing that.
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Homer_Simpson (09-10-2023)
#15
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I dial my valve cleaning like that, except I use a drill press instead...as long as you are confident enough to stay off the seat it's not a problem. Also tape the stems up with a few layers of thick masking tape so you don't mar the surface of the stem....I like to start with emery cloth or 120 grit and then work my way up to 320 or so...I would stay away from a wire wheel though, I've never tried it to disprove it but I won't be trying that anytime soon...
#16
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I've used the wire wheel, works just fine, especially for the OEM valves. With the aftermarket stuff I'll even chuck them up in a drill and use green scotchbrite afterwards to polish them up a little bit.
It's important to clean the seat face really well and inspect for any pitting or nicks. It wouldn't hurt to take them to the machine shop to grind in a new seat and tip in the valve stem.
It's important to clean the seat face really well and inspect for any pitting or nicks. It wouldn't hurt to take them to the machine shop to grind in a new seat and tip in the valve stem.
#17
The method done in the video is fine. It was done on Titanium valves which come standard in those race bikes but would work for all, pro-circuit kawi is a top team won multiple championships and I can't see them doing something that would hurt performance of their bikes.... plus people remember our valves are high grade steel, stainless, inconel or titanium not a soft material likealuminum so using a soft wire wheel or scotchbrite pad is not going to hurt them if done carefully. As others have said inspect the valve seat area after it all anyway to be sure and run it..... I have seen and done far worse to valves at the track in a 1500hp racecar to make a round and end up fine...
#19
TECH Junkie
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Man what kind of gunk do you guys have on your valves that you need to do all that harsh cleaning on wire wheels? If so, you got bigger problems on your hand than how to clean the valves.
Maybe it was just me, but my valves were almost spotless when I took them off after 98k miles. A 2 minute soak in brake cleaner and a light wipe with a rag and they were shiny again.
Maybe it was just me, but my valves were almost spotless when I took them off after 98k miles. A 2 minute soak in brake cleaner and a light wipe with a rag and they were shiny again.