Newby's

Pistoncleaning.

Pistons come in caked in carbon. They leave as bare metal, cleaned in-house at the counter in North End.

Carbon removed0%

Move across the piston to scrub it clean.

Up close.

This is what comes off. Hover or press on a shot to look closer.

Before cleaning

Crown carbonBaked on by every combustion stroke. It builds hot spots and steals compression space.

Before cleaning

Packed ring groovesCarbon packs in behind the rings until they stick. Stuck rings can't seal.

Before cleaning

Skirt varnishOil cooks into an amber film that hides scuffing and wear marks.

Illustrations of typical before-cleaning condition.

Every surface where carbon and varnish build up. Tap a part to see where it is.

Drag the line across the crown. Left is how pistons come in, right is how they go back out.

BeforeAfter

A rebuild is only as good as the seal the rings make. Clean pistons give new rings a fair start.

Clean grooves let new rings sit and move the way they're meant to, so compression holds.

Oil control rings that aren't clogged scrape the bore properly instead of letting oil past.

If the pistons are in good shape, cleaning them can save buying new ones for the rebuild.

Book your drop-offPick a day on the booking page or send us a WhatsApp.
Bring the pistons inOn or off the rods. Tell us the engine so we know what we're working with.
We clean themCrowns, lands, grooves and skirts, down to bare metal.
Collect and rebuildWe let you know on WhatsApp when they're ready, along with any rings or gaskets you've asked for.

The pistons, on or off the connecting rods
Make, model and engine code
Your list of rings, bearings or gaskets for the rebuild, so it can all be ready together