Ellison Machine Shop in Baltimore: Machine Work and Engine Rebuilding for Local Mechanics and DIYers

Ellison Machine Shop is a full-service machine shop on Baltimore's east side that handles engine block boring, cylinder head porting, valve seat work, and custom fabrication for both professional mechanics and individual car owners. Unlike general repair shops that send engine work out, Ellison does the precision machining in-house, which means faster turnaround and lower costs for Baltimore-area shops and enthusiasts who need blocks squared, heads surfaced, or specialty parts made.

What Ellison Machine Shop actually does

Ellison operates as a production machine shop first, not a retail storefront. The shop takes engine blocks, cylinder heads, and related components and performs precision machining: boring cylinders to oversize specs, honing, surfacing heads and blocks, cutting valve seats, and fabricating custom brackets or adapters. The work serves both the professional repair trade (independent shops send daily work here) and hobbyists rebuilding engines or preparing blocks for racing. The shop also handles general fabrication and can machine parts to customer specifications. Unlike a dealership service department, Ellison has no waiting room or walk-in culture; it is appointment and turnaround focused.

Services and pricing

Typical jobs and cost ranges (confirm current pricing by phone, as material costs fluctuate):

Block boring runs $80 to $140 per cylinder depending on depth and finish. Cylinder head surfacing costs $150 to $300 depending on head size and condition. Valve seat work runs $40 to $80 per seat. Custom fabrication is quoted per job. Honing is typically $30 to $60 per cylinder. Most jobs take 5 to 10 business days; rush service (2 to 3 days) incurs a 25 to 40 percent surcharge. The shop requires a 50 percent deposit at drop-off; the balance is due on pickup.

Ellison does not perform diagnostic work or general repairs. It is purely a machine shop, so you bring prepared or pre-quoted work to them.

How Ellison compares to other Baltimore machine shops

Baltimore has three active full-service machine shops: Ellison, Chesapeake Machine & Tool (in Dundalk, 10 miles northeast), and Essex Machine Works (Glen Burnie, 12 miles south). Chesapeake handles larger industrial jobs and has a longer lead time for small engine work; Essex focuses on automotive and small-engine rebuilds and matches Ellison's turnaround. Ellison's advantage is location (closer to central Baltimore) and willingness to work with one-off DIY jobs, whereas Essex and Chesapeake prioritize volume shop accounts. If you need a single block bored, Ellison is more accessible; if you are running a large fleet, Chesapeake and Essex offer better per-unit pricing at scale.

Who Ellison suits and who it does not suit

Choose Ellison if you are rebuilding an engine, preparing a block for racing, have a cylinder that needs boring, or run an independent repair shop that needs reliable local machine work without shipping delays. You will need to provide clean parts and a clear work order; Ellison is not a hand-holding operation.

Ellison is not the place if you need general car repair, diagnostics, or a one-stop engine rebuild. It is also not cost-effective for small jobs like a single valve seat; the minimum service charge may apply. Do not come here expecting retail hours or a receptionist; you call ahead, arrange a time, drop off work, and pick up on the agreed date.

What the first visit involves

Call Ellison to describe your job and get a rough estimate. They will ask about part condition, specs (bore size, head type, material), and timeline. You schedule a drop-off window. Bring clean parts in a box or bucket, along with a written note specifying what you need done (bore to .030 over, surface to .005, etc.). Pay the 50 percent deposit, receive a work order, and confirm the pickup date. Most jobs are quoted within 24 hours if you call early in the week.

Hours, parking, and logistics

Ellison operates Monday through Friday, 7:00 a.m. to 4:30 p.m.; closed weekends and major holidays. There is street and lot parking on the property. The shop does not ship work; pickup is in-person. If you cannot pick up during business hours, you can arrange after-hours or weekend pickup in advance for a small fee. Payment is by cash, check, or card at pickup.

Ellison Machine Shop fills a gap that no general repair shop in Baltimore can match: same-city, quick turnaround machine work without the cost or wait of shipping to regional facilities or dealership networks.