JEFM

JEFM MACHINE SERVICE custom performance engines rebuilds automotive engineering fabrication and much much more! PA/NJ/NY

Shedding light on the inner workings of the WR250R engine upgrade. 🔦🔧⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️Yamaha WR25...
08/22/2026

Shedding light on the inner workings of the WR250R engine upgrade. 🔦🔧

⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️
Yamaha WR250R, engine build, big bore kit, dirt bike tuning, performance upgrades, motorcycle repair, garage life, dual sport mods, engine overhaul, custom fabrication, mechanical engineering, workshop views

No scrub brushes. No aggressive media blasting. Just pure high-frequency ultrasonic magic. ✨🔧Gave these LS heads a fresh...
08/20/2026

No scrub brushes. No aggressive media blasting. Just pure high-frequency ultrasonic magic. ✨🔧
Gave these LS heads a fresh start in our new industrial sonic tank. Ready for the next build!

⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️⛓️
LS cylinder heads, 823 heads, ultrasonic cleaning, engine machining, engine rebuilding, automotive shop, bare aluminum cylinder heads, carbon removal, cylinder head restoration
Aluminum engine cleaning
LS3 head cleaning
Ultrasonic parts washer
Engine machining service
Valve job preparation
Engine rebuilding tools
Degreasing auto parts
LS swap restoration

MZR 2.3 crank getting prepped. Reel coming later!!!Crankshaft prepCrankshaft clearanceMain bearing clearanceMicrometer m...
08/16/2026

MZR 2.3 crank getting prepped.
Reel coming later!!!

Crankshaft prep
Crankshaft clearance
Main bearing clearance
Micrometer measurement
Assembly l**e
Main stud installation
Crankshaft end play
Thrust bearing clearance
Dial indicator setup

Assembly lubricant on. ✅

Checking everything before it goes together.

Engine machining shop
Custom engine rebuild
Precision engine assembly
Bottom end rebuild
Block machining
Blueprinted engine
Motor blueprinting
Performance engine builder

✨THIS IS A HIGH CLASS JOINT. ACT ACCORDINGLY ✨😂

Boring, honing, decking, and file-fitting piston rings—precision is everything when building high-performance blocks. 🛠️...
08/16/2026

Boring, honing, decking, and file-fitting piston rings—precision is everything when building high-performance blocks. 🛠️
This MZR 2.3 engine block got the full treatment at the shop: bored, honed, surfaced/decked for a dead-flat deck surface, and file-fitted piston rings to ensure exact end-gap clearances before final assembly. Proper blueprinting and precise tolerances make all the difference in reliability and power delivery.
Whether you’re building a boosted Mazda Miata setup or restoring a daily driver, zeroing in on precise machine work is the only way to build for longevity.
What engine build is currently on your stand? Drop your setup in the comments! 👇

MZR 2.3 engine build | Mazda Miata engine machining | Cylinder boring and honing | Decking engine block | Piston ring file fitting | Engine blueprinting | Performance machine shop Hawley PA | Custom engine reassembly

Address

Hawley, PA
18428

Opening Hours

Monday 2pm - 10pm
Tuesday 2pm - 10pm
Wednesday 2pm - 10pm
Thursday 2pm - 10pm
Friday 2pm - 10pm
Saturday 10am - 8pm
Sunday 9am - 1pm

Telephone

+15167376903

Website

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