J and M Machine Co Inc

J and M Machine Co Inc Automotive engine rebuilder specializing in all types of engines. Babbitt bearings, crack repairs, Line boring crankshaft grinding, general machining.

Mack chain drive:Making speak retainer from steel tube.
09/03/2026

Mack chain drive:
Making speak retainer from steel tube.

Mack Chain drive:Making 2 new crush/seal collars for drive shafts
09/03/2026

Mack Chain drive:
Making 2 new crush/seal collars for drive shafts

BMW Cylinder headSeats machined in our NEWEN machine
09/03/2026

BMW Cylinder head
Seats machined in our NEWEN machine

Dodge 5.7 Hemi:Resurface cylinder head. Typical overheated cylinder head.
09/03/2026

Dodge 5.7 Hemi:
Resurface cylinder head.
Typical overheated cylinder head.

BMW Cylinder head:Cleaned and new bronze valve guides installed.
09/02/2026

BMW Cylinder head:
Cleaned and new bronze valve guides installed.

09/02/2026

1936 Packard 120 straight 8
Grinding Rod journals.
4 1/4” stroke

1936 Packard:Checking the crankshaft for straightness
09/01/2026

1936 Packard:
Checking the crankshaft for straightness

BMW 2.5l Cylinder headTo be rebuilt
09/01/2026

BMW 2.5l Cylinder head
To be rebuilt

Alfa RomeoNew bronze valve guides installed Had to go .002” bigger on exhaust guide O.D
08/31/2026

Alfa Romeo
New bronze valve guides installed
Had to go .002” bigger on exhaust guide O.D

Mack truck chain drive.Making parts fit again.
08/31/2026

Mack truck chain drive.
Making parts fit again.

Address

40 Mount Vickery Road
Southborough, MA
01772

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm
Saturday 9am - 12pm

Telephone

(508) 460-0733

Website

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