Excelsior Garage & Machine

Auto machine shops keep engines running past factory specs—precision work that most garages can’t handle. Excelsior Garage & Machine specializes in that exact niche: cylinder boring, crankshaft grinding, block decking, and custom flywheel balancing. They also tackle head porting, valve seat cutting, and full engine assembly for rebuilds. The kind of detail-oriented work that turns a tired powerplant into something road-worthy again.

You’ll find the shop at 904 Mamaroneck Ave, Mamaroneck, NY 10543, tucked between the train tracks and the waterfront. The neighborhood feels like a quiet corner of Westchester where mechanics still work with their hands instead of just scanners. If you’re dropping off a block or picking up a freshly machined crank, the address is easy to spot from the avenue.

Call ahead with measurements or part numbers; (914) 698-6020 rings straight to the shop floor. For directions, pull up the map and follow Mamaroneck Avenue until the sign appears.