JMR has a fully equipped machine shop in which 99% of all necessary machine work operations associated with the modification and blueprinting of performance engines and transmissions can be carried out. By carrying out this work in house, quality is assured.

Here are just some of the procedures carried out at the JMR workshop:

Crankcase: Line bore, bore for larger cylinders, deck case, bore & deck case, clearance case for stroker crank, clearance cam follower bores, drill & tap for full flow, drill & tap oilways, fit case savers (8mm), fit case savers (10mm), bore case for Scat flanged crank seal, cut case for sand seal, machine Type 4 case for Porsche fan, braze oil pick up extension.

Crank & Flywheel: Regrind crank, polish crank, magnaflux crank, nitride crank, 8 dowel crank & flywheel, lighten flywheel, resurface flywheel, dynamically balance crank assembly

Conrods: Clearance rods for stroker crank, balance rods +/- 1gm, balance rods end for end +/- 1gm, resize big ends, fit & size small ends, straighten rod

Pistons & Cylinders: Hone set of cylinders, set ring gaps, flycut pistons, dish pistons, balance pistons +/- 1gm, notch pistons for valve clearance, glass bead pistons

Cylinder Heads: Remove & replace valve guides, recut valve seat, competition multi-angle valve job, cut 041 inlet seat to 40mm, semi- hemi cut combustion chambers, bore pair heads for larger cylinders, bore heads & semi- hemi, cut guide bosses for dual springs, cut guide tops for retainer clearance, cc combustion chambers, flycut heads, port & polish pair heads, install larger valve seats, glass bead heads

Miscellaneous: Plug oil pump, machine pushrods to length, shim bolt together rocker shafts, degrease crankcase, leak test engine

......

back to contents