Doug Duffy Motorsports

Doug Duffy Motorsports Powersports Engine Repair
(1)

07/03/2026

The little Kwik way FWS2 boring bar stretching its legs to do this 4.015” cylinder. Using my new Beam Equipment indexible tooling which leaves an awesome finish. Pairing with a JE Pistons piston.

07/02/2026

Yamaha cylinder head refresh

07/01/2026

Yamaha 1100 Waverunner cylinders bored, honed and chamfered for . When you’re in full production mode you can’t be tearing down a CNC setup to bore your personal ski cylinders. That’s what I’m here for 😎🫡

07/01/2026

Yamaha Banshee cylinder head resurfacing

03/14/2026

Rough as cob ➡️ smooth as glass

03/04/2026

Porsche 356 cylinder heads. New valve guides and valves from as always. Valve job, all critical surfaces machined, and assembled to spec.

02/25/2026

Subaru EJ25 heads because “they/them” gotta get to work too. dropping guides like it’s going outta style.

Address

Appointment Only
Gibsonville, NC
27214

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+13363147450

Website

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