Carbon build up removal...?

[scottp11]

I pulled the head on my B16, and there is ALOT of carbon build-up on my exhaust valves due to inadaquate PVC system because of my turbo.

I was wondering if anyone knew of a quick way to remove the carbon build up from valves. I've used everything from Simple Green, WD-40, engine degreaser, even trying to scrape it off with a razor blade. Anyone know of a faster way.

Kinda blurry, but you can see the amount of build up...

If not, I'll probably end up buying new ones... Thats how built up they are...

 

[eg6sir]

hot tank

 

[scottp11]

Thanks man, but I don't have access to a hot tank. Anything else? My brother told me to look for some stuff called "Chem-tool B12" or somethin'... I never heard of it.

Any other suggestions?

 

[95b16coupe]

hot tank is pretty much the best answer.

maybe a dremel with a buffing wheel, but that is pretty risky.