Carbon Build Up

[the1pig]

What is the trick to remove Carbon Build up on the pistons and valves.

I used some degreaser and a stiff nylon brush which got some of it off.

I am hesitant to use a scraper on the aluminum so I don't damage them.

Thanks for the info.

Matt

[posplayr]

Soak Soak Soak

Or I used a HF media blaster with wallnut shells.

[SqDancerLynn1]

A soak in Carb cleaner helps if it is apart. Make sure the ring grouves are clean !!!

[GavinJuice]

1) amsoil powerfoam 2) seafoam deepcreep

[first timer]

a wire brush will work fine just nothing to stiff. I use some B-12 CHEMTOOL®
VALVE AND INJECTOR CLEANER FUEL TREATMENT to soften the carbon up. I have also used sea foam in the past to help soften it up, nothing but elboe grease will really take it off. Maybe a high pressure washer will knock some stuff off too. If your valves are out you can soak them for a few days in carb dip to help.

[duaneage]

Soak for a while in lacquer thinner, that helps. I used an old piston ring I snapped to clean the grooves. I used a brass wire brush on the aluminum heads and valves, with the valves closed in the head.

While having shiny parts is great, remember in a short number of miles the carbon will be back. It's a natural byproduct.

[Nessism]

I recently cleaned up a set of pistons and valves and first soaked them in carb dip. Spray cleaners will not get it, it's got to be the dip. The pistons came out great after this treatment but the valves still had a heavy layer of carbon. Only way I found to remove it was media blasting - I used glass bead. Many shops clean valves with a wire wheel on a grinder - just keep off the sealing surface.