Aqua Blasting (Wet Blasting)

Suitable Components

• Engine components (cylinder heads, blocks, pistons, cam covers)
• Gearbox and transmission parts
• Suspension components and brake calipers
• Intake manifolds and throttle bodies
• Aluminium wheels and hub assemblies
• Classic car parts and restoration components
• Small brackets, fasteners, and hardware
• Any metal part requiring gentle, effective cleaning

How Aqua Blasting Works

Aqua blasting — also known as vapour blasting or wet blasting — uses fine glass bead media suspended in water, fired at the component under controlled pressure. The water acts as a lubricant and cushion, allowing the media to clean and de-scale the surface without aggressively cutting into the base metal. This makes it the preferred method for cleaning engine parts, performance components, and anything made from aluminium or delicate alloys.

Unlike traditional dry blasting (sand blasting or bead blasting), aqua blasting produces no heat build-up, meaning there is zero risk of warping, distortion, or altering the temper of heat-treated components. The result is a uniform satin finish that looks factory-fresh — ideal for engine rebuilds, restoration projects, and concours-level preparation.

At Hurst Cars in Bedford, we use aqua blasting daily as part of our JDM and Subaru engine rebuilds and restoration work. Whether you need a single cam cover cleaned up or an entire engine stripped back to bare metal, our wet blasting service delivers consistent, reliable results every time.

• Step 1: Inspection — We assess the component's material, condition, and any areas requiring special attention before blasting begins.
• Step 2: Pre-Clean — Heavy oil, grease, and loose debris are removed so the blasting media can work directly on the surface contamination.
• Step 3: Aqua Blasting — Fine glass bead media and water are blasted at the component under controlled pressure, stripping away corrosion, paint, gasket material, and oxidation.
• Step 4: Rinse & Dry — The component is thoroughly rinsed with clean water and dried to prevent flash rusting on ferrous metals.
• Step 5: Protection — A light protective oil or coating is applied where appropriate to preserve the finish until the part is ready for assembly.

What We Can Aqua Blast

As a JDM and Subaru specialist, we handle everything from rare Japanese performance parts to everyday mechanical components. If it is made from metal, we can almost certainly clean it. Our aqua blasting service in Bedford is used by private enthusiasts, trade garages, and restoration workshops across Bedfordshire and beyond.

• Engine Blocks — Full strip-back of corrosion, oil staining, and gasket residue from cast iron and aluminium blocks, including Subaru EJ and FA series engines.
• Cylinder Heads — Removes carbon deposits, old gasket material, and corrosion from combustion chambers, ports, and external surfaces.
• Carburettors — Restores Mikuni, Weber, and Keihin carburettors to like-new condition without damaging jet passages or gasket faces.
• Inlet Manifolds — Cleans intake runners and plenum chambers of carbon, oil residue, and oxidation for improved airflow.
• Gearbox Casings — Strips old sealant, corrosion, and oil from manual and automatic transmission housings.
• Brake Calipers — Removes brake dust build-up, corrosion, and old paint ready for rebuilding or powder coating.
• Suspension Components — Cleans wishbones, hubs, knuckles, and subframes back to bare metal.
• Turbo Housings — Safely cleans turbine and compressor housings, including TD04, TD05, and VF-series turbochargers commonly found on Subarus.
• Exhaust Manifolds — Removes heat discolouration, carbon, and corrosion from cast iron and stainless steel manifolds and headers.
• Wheel Hubs & Bearings — Cleans hub assemblies, bearing housings, and associated hardware for inspection and reassembly.

Why Choose Aqua Blasting Over Dry Blasting

Traditional dry blasting methods — such as sand blasting, glass bead blasting, and soda blasting — all involve firing abrasive media at a surface without any liquid cushion. While effective for heavy-duty stripping, dry methods generate significant heat and can be overly aggressive on softer metals. For engine parts cleaning and performance component restoration, aqua blasting is the superior choice.

• No Heat Damage — The water in the slurry absorbs energy on impact, eliminating the heat build-up that causes warping, distortion, and changes to material hardness. Critical for aluminium cylinder heads and thin-walled castings.
• Superior Surface Finish — Aqua blasting produces a consistent, even satin finish across the entire component. Dry blasting often leaves a rougher, more uneven texture that requires additional finishing work.
• Preserves Machined Surfaces — Bearing journals, gasket faces, and machined bores retain their dimensions and surface finish. Dry blasting can erode these critical tolerances, leading to leaks and premature wear.
• Safe for Aluminium & Delicate Alloys — Aluminium, magnesium, brass, and zinc die-cast parts are all safely cleaned without pitting, erosion, or surface damage that dry blasting can cause.
• Removes Embedded Contamination — The water flushes away contaminants as they are released, rather than driving particles deeper into the surface as dry media can do. This is particularly important for engine components where cleanliness is critical.
• Environmentally Friendly — Aqua blasting is a water-based process with recyclable glass bead media. No silica dust, no chemical strippers, and minimal waste compared to dry blasting or chemical dipping methods.
• Dust-Free Operation — The wet process suppresses airborne dust entirely, creating a safer working environment and a cleaner result with no media trapped in blind holes or internal passages.

Turnaround & Pricing

We offer competitive pricing for our aqua blasting service in Bedford, with turnaround times to suit most projects. Every job is quoted individually based on the size, quantity, and condition of the parts — contact us for an accurate price.

• Small Parts (brackets, fittings, fasteners, small covers) — Typically completed same-day. Drop off in the morning, collect in the afternoon.
• Medium Parts (brake calipers, inlet manifolds, cam covers, throttle bodies) — 1–2 working days depending on condition and quantity.
• Large Parts (engine blocks, cylinder heads, gearbox casings, subframes) — 2–3 working days. Heavily corroded items may require additional time for multiple passes.
• Batch & Trade Work — We offer trade rates for garages and workshops sending regular work. Speak to us about ongoing arrangements.

Pricing depends on the size and condition of each component. Small items such as brackets and fittings start from around £15–£30. Medium components typically range from £40–£80. Larger items including engine blocks and cylinder heads are quoted on inspection. We serve customers from across Bedfordshire, Buckinghamshire, Hertfordshire, and Cambridgeshire — and regularly receive parts by post from across the UK.

Frequently Asked Questions

• Is aqua blasting safe for aluminium?
  Yes. Aqua blasting is one of the safest cleaning methods for aluminium components. The water cushions the glass bead media on impact, preventing the surface erosion and pitting that dry blasting can cause. We regularly aqua blast aluminium cylinder heads, inlet manifolds, carburettors, and gearbox casings — including Subaru EJ-series heads and JDM intake components — without any risk of damage to machined surfaces or critical tolerances.
• How much does aqua blasting cost?
  Pricing depends on the size, quantity, and condition of the parts. Small items such as brackets and fittings start from around £15–£30. Medium components like brake calipers and inlet manifolds typically range from £40–£80. Larger items such as engine blocks and cylinder heads are quoted individually. Contact us on 07979 726769 or email sales@hurstcars.co.uk for an accurate quote.
• What is the difference between aqua blasting and vapour blasting?
  Aqua blasting and vapour blasting are the same process — both terms describe wet blasting where fine glass bead media is suspended in water and fired at the component under pressure. The names are used interchangeably across the industry. You may also see it referred to as wet blasting or slurry blasting. The result is the same: a clean, uniform satin finish with no heat damage to the base material.
• Can you blast heavily rusted parts?
  Yes. Aqua blasting is highly effective at removing surface rust, corrosion, and oxidation. For heavily rusted parts, we carry out multiple passes to fully strip the corrosion back to clean metal. Once blasted, we recommend applying a protective coating or oil promptly, as freshly cleaned bare metal can begin to oxidise within hours if left unprotected.
• Do you offer a collection and delivery service?
  We primarily operate from our workshop at 15–17 Sergeants Way, Bedford MK41 0EH. Parts can be dropped off and collected during workshop hours. For larger jobs or trade customers, we can arrange collection and delivery across Bedfordshire and surrounding counties by prior arrangement. We also accept parts sent by post for customers further afield across the UK — contact us to discuss logistics for your project.