VWDiesel.net The IDI, TDI, and mTDI source.

Engine Specific Info and Questions => IDI Engine => Topic started by: captainpartytime on July 28, 2008, 07:34:27 pm

Title: Cleaning carbon crud from pistons / piston ring grooves
Post by: captainpartytime on July 28, 2008, 07:34:27 pm

What is the best way to clean the carbon crud off of my pistons and piston ring grooves?

Title: Cleaning carbon crud from pistons / piston ring grooves
Post by: Vincent Waldon on July 28, 2008, 09:24:00 pm

A carbide piston ring groove cleaner  with the right size cutter is the safe way to do the ring grooves.... it's a sealing surface and so needs to be cleaned very accurately.

For the face of the piston... I actually cheat and use a wire brush... but I'm very careful to get nowhere near the edge where I might scrape a groove in the side.

Title: Cleaning carbon crud from pistons / piston ring grooves
Post by: vanagonturbo on July 29, 2008, 07:45:50 pm

I have used the old rings to clean the ring grooves. You will need to file/grind and edge to be able to pick at it to get the crud off. If you did it right, you will have numerous cuts on your thumb :)

Title: Cleaning carbon crud from pistons / piston ring grooves
Post by: fastvicar on July 30, 2008, 08:04:58 am

I must have done it very right.  :(