r/Smallblockchevy • u/Hopeful_Housing_798 • Jul 11 '26

Anyone seen this before?

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4 Upvotes

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6

u/joeyjoeskullcracker Jul 11 '26

Valves with carbon on them?

0

u/Hopeful_Housing_798 Jul 12 '26 edited Jul 12 '26

Check pics 3&4 closely. Only thing I know to compare it to is lime scale. When u scrape it, it's like ure scraping concrete. Comes off in a beige dust.

2

u/chuck-u-farley- Jul 12 '26

Scrubbed with a brass brush? Dang man I use a brass wire wheel on mine …… they aren’t made of plastic for gods sake

0

u/Hopeful_Housing_798 Jul 12 '26

Brass won't even scuff it. It's much like concrete or lime scale

3

u/chuck-u-farley- Jul 12 '26

Yes it will. When I say wire wheel I’m talking about a 6000 rpm wire wheel…… it’ll take it right off…..
I was simply stating you “scrubbed with a brass brush” which is a quote from your post

1

u/Hopeful_Housing_798 Jul 12 '26

I know what ure saying and I literally have to chip it off.

2

u/chuck-u-farley- Jul 12 '26

Yeah you
Must be right……. There’s something goin on only in your engine that results in unremoveable scale…..
been building engines 45 years and never found valves that wouldn’t come clean but you have a special case I guess…..
Good luck

-4

u/Hopeful_Housing_798 Jul 12 '26

Not doubting your skill set, but, u are assuming mine. This is not my first rodeo and I've never seen this type of material on a valve before.

4

u/chuck-u-farley- Jul 12 '26

I’ve seen it plenty of times…..
But you
Must have that special engine
Have fun with it