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The Sunnen CV-616 is a vertical cylinder-honing machine designed to finish bores for engine blocks, sleeves, or cylinders with precision — delivering proper surface finish, roundness, and bore geometry critical for piston fitment, ring seating, and long-term engine reliability. As a used unit, the CV-616 offers a cost-effective route to in-house honing, making it a solid option for rebuild shops, remanufacturers, or machine shops doing cylinder work without the capital cost of a new machine.
Thanks to its adaptable bore-size capacity and robust vertical-hone configuration, the CV-616 works well on automotive, diesel, or industrial blocks — including V-blocks, overhead-head inline blocks, angle-head blocks, and many other configurations (as long as within its capacity limits). With proper setup and maintenance, this honing machine remains a versatile, dependable asset for cylinder finishing, rebuilds, or custom machining work.
Good for Mixed Use: Automotive, Diesel, Industrial — The broad bore range and flexible setup make CV-616 suitable for a variety of block types — from small automotive to mid-size diesel or industrial cylinders (within capacity).
Cost-Effective Used Machine Solution — As a used unit, the CV-616 gives shops professional-grade honing capability at a lower initial cost, enabling expansion of cylinder-work services without heavy capital investment.
| Specification | Value |
|---|---|
| Model | Sunnen CV-616 Cylinder Honing Machine (Used) |
| Bore Diameter Capacity | ≈ 2" – 8" (≈ 51 – 203 mm), depending on honing head / tooling |
| Standard Bore Range (stock hone head) | 3" – 5" (≈ 76 – 127 mm) |
| Cylinder / Workpiece Length Capacity | Up to 42″ (≈ 1067 mm) block length; typical cylinder length up to 11" (≈ 279 mm), longer up to ~18″ (with special tooling) |
| Spindle Speeds | 125, 170, 230 & 310 RPM |
| Stroke / Stroking Rates | Stroke rates: 41, 57, 80 SPM; stroke length adjustable (0–9″ typical) dependent on setup |
| Honing Oil System | ≈ 55-gallon reservoir; filter system (with removable tanks/screens) and built-in filtration/pump for clean honing fluid |
| Motor / Power | Main spindle motor: 2-HP (230/460V 3-phase); additional motors for oil pump and cooler included as per original spec sheet |
| Required Floor Space / Machine Dimensions (approx.) | Footprint ~ 72½″ W × 89¾″ D × 85½″ H (≈ 1842 mm × 2280 mm × 2172 mm) |
| Machine Weight | ~1,900 lbs (≈ 861 kg) operating; Shipping weight approx 2,500 lbs (≈ 1134 kg) |
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When you reach out, you get answers quickly - not generic replies.
Backed by 50+ years in engine machining and reconditioning.
No surprises, no unclear timelines.
Your machine’s long-term performance is our priority.
Decades before today’s engine shops trusted our equipment, Tony was already deep in the craft — rebuilding motors, machining blocks, and pushing for better precision.
A local newspaper once featured him as a standout young machinist, noting his drive, attention to detail, and obsession with doing things the right way. That same passion would eventually shape our company’s values.
Today, that commitment lives on in every machine we sell, every customer we support, and every shop we help succeed.