简体中文
EnglishWhat Engine Machining and Assembly Services Does Fonse Performance Provide?
Updated
Fonse Performance provides complete engine machining and assembly under one roof: CNC engine block machining, cylinder head machining and rebuilding, crankshaft inspection/grinding/polishing/balancing, block honing, and complete engine assembly. The shop also runs chassis and engine dyno tuning, so a build can be machined, assembled, and tested in the same facility. This page covers what each service involves so you can judge which ones your project needs.
CNC Engine Block Machining
The machine shop is equipped with Haas CNC equipment, which the site describes as delivering accuracy on every engine block — whether you're rebuilding a classic or building a high-performance race engine.
The stated goal is that every bore, deck, and surface meets exact specifications. In practice, CNC block work is what sets the foundation for ring seal, head gasket sealing, and consistent compression across cylinders, so it's typically the first machining step in a rebuild or race build.
Cylinder Head Machining Services
Fonse Performance offers complete cylinder head machining and rebuilding for street, performance, and racing applications. The listed services are:
- Surface milling / decking — trues the head surface for proper gasket sealing
- Valve seat machining — cuts seats to match valves and restore sealing
- Crack inspection & repair — checks for cracks and addresses them before assembly
- Valve guide installation & machining — restores valve stem alignment and clearances
If your heads are coming off anyway, having inspection and seat/guide work done at the same time avoids a second teardown later.
Crankshaft Services
The site describes the crankshaft as the heart of the rotating assembly, where precision matters at every thousandth of an inch. Using precision equipment, the shop will:
- Inspect the crankshaft
- Grind journals as needed
- Polish surfaces
- Balance the crankshaft for smooth, reliable engine performance
Balancing matters most on engines that will see sustained RPM, so this is a common step in performance and marine builds rather than a strictly optional one.
Block Honing Services
Honing is offered in several forms, each aimed at a different problem:
| Service | What it addresses |
|---|---|
| Precision honing & sizing | Final cylinder bore dimensions |
| CNC plateau honing | Ring seating and oil control |
| Final bore sizing | Matching pistons to bores |
| Taper & out-of-round correction | Restoring cylinder geometry |
| Single & multi-stage honing | Staged material removal for accuracy |
| Plate honing with torque plates | Bore distortion under real head-bolt load |
Torque plate honing is the detail worth noting: it simulates the head being bolted on so the bores are round in the assembled engine, not just on the stand.
Complete Engine Assembly
Every precision-machined component can be assembled by the shop. The service is described as combining decades of experience with attention to detail to deliver engines that are balanced, sealed, and ready to perform — for street, strip, or marine use.
Having machining and assembly done by the same shop means clearances measured at the machine are carried through to the finished engine, rather than being re-checked by a third party.
Dyno Tuning After the Build
Fonse Performance also offers chassis dyno and engine dyno tuning. The site states the dyno facility handles everything from classic carbureted V8s to modern boosted EFI engines, and supports gas, ethanol, methanol, nitrous, boosted, and naturally aspirated combinations. Engine dyno work is described as "built, tested, proven" — meaning a fresh build can be run and verified before it goes back in the vehicle.
How to Decide What You Need
- Stock rebuild with worn bores → block honing (with torque plates if you want it done right), head surface check, crank inspection.
- Performance or race build → CNC block machining, full head work, crank balancing, plateau honing, then dyno verification.
- Heads only → surface milling, valve seat machining, guide work, and crack inspection as a package.
- Marine or boosted application → the same machining steps, plus dyno tuning to confirm fuel and boost behavior under load.
For current pricing, turnaround times, and whether your specific engine platform is supported, contact the shop directly at the number listed on the site (856-627-5946) — the page does not publish pricing or scheduling details.