Engine Block Services

Precision machining services to restore, strengthen, and optimise engine blocks.

Engine block services - OCS

Built on Accuracy. Finished for Performance.

We offer a full range of engine block machining services, including rebore and honing, line honing and boring, and block decking. Each service is carried out with precision to suit your specific engine build, whether for repair, refresh, or performance use.

Customers typically supply the engine block in bare form, or as fully stripped as possible. Each block is carefully inspected and measured before we recommend the exact machining work required. No machining begins until this assessment is complete and agreed.

Delivered engine block

Tailored engine block services designed for you

Engine Icon

Rebore, Hone & Plateau Hone

Restores worn or damaged cylinders and applies the correct surface finish for new piston rings to bed in properly. Reboring requires oversized pistons, making this the ideal stage to specify pistons at the same time — including our forged IRP piston sets, which we can supply.

Line Hone Bearing icon

Line Hone – Main

Corrects alignment of the main bearing tunnel, typically required after high mileage, general wear, or fastener upgrades. This process ensures the crankshaft runs true and helps reduce premature bearing wear.

Corrective process icon

Line Bore – Main

A more corrective process than line honing, used when the main bearing tunnel is significantly out of specification. Often recommended when fitting ARP main bolts or studs (also available from us), as increased clamping forces can distort the tunnel.

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Block Reface (Decking)

Machines the block deck flat and square to the crank centreline. Essential for proper head gasket sealing, accurate compression ratio, and consistent quench clearance.

Contact

Get in Touch

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Email

Reach us anytime at
sales@ocservice.co.uk

Phone

Call us for assistance
01962 855969

Office

Unit D, Prospect Commercial Park, Prospect Rd, New Alresford
S024 9QF