Engine reconditioning & precision machining facility
Engine Reconditioning
Engine reconditioning returns a worn engine to serviceable condition by measuring it, machining worn surfaces back into specification and rebuilding it cleanly. PRT Engineering Works carries out the full route in Salem, Tamil Nadu — from a complete diesel or petrol engine rebuild to a single component machined to the same standard.
Overview
Reconditioning is not a single repair and it is not guesswork. An engine is stripped to its components, every component is cleaned and inspected, and the critical surfaces are measured against their specification. Only then is metal removed — and only where measurement shows it must be.
The reconditioned engine is assembled from components that have been inspected, measured and machined as a matched set, with clearances and torque applied in the correct sequence. The result is a rebuild that is decided by the numbers, documented as it is built.
The PRT standard
Every job — full engine or single component — runs through the same disciplined route so the outcome is repeatable.
The machining services
Each of these services is a controlled operation on its own and a stage of a full engine recondition. Open any service to see what is inspected, measured and machined.
Strip, inspect, measure and machine the engine's foundation. We recondition cylinder blocks for rebuilds — cleaning, crack detection, boring and honing, deck surfacing and, where needed, line boring of the main bearing housings.
View serviceRestore sealing, gas flow and valve operation. We recondition cylinder heads for rebuilds — strip, clean, crack inspection, pressure testing, valve and seat work, and precision surfacing.
View serviceRestore worn journals to size and true running geometry. Crankshaft grinding returns main and crankpin journals to specification for use with matching undersize bearings.
View serviceRestore rod bores, alignment and fastener condition. We check, measure and recondition connecting rods so each rod is straight, correctly sized and ready for the rebuilt assembly.
View serviceCut and finish cylinders to exact size with the correct surface finish. Boring removes the wear and taper; honing produces the plateau finish new rings need to seat.
View serviceRestore alignment of bearing housings in one continuous set-up. Line boring re-machines main bearing bores so every saddle shares one true axis with the crankshaft.
View serviceA controlled, clean, torque-accurate build. We assemble reconditioned engines from measured components — so the finished unit leaves the shop built to specification and ready to run.
View serviceComponent by component
A full rebuild hands each major component to the right operation. These pages explain the measurement and machining behind each one.
Strip, inspect, measure and machine the engine's foundation. We recondition cylinder blocks for rebuilds — cleaning, crack detection, boring and honing, deck surfacing and, where needed, line boring of the main bearing housings.
View serviceRestore sealing, gas flow and valve operation. We recondition cylinder heads for rebuilds — strip, clean, crack inspection, pressure testing, valve and seat work, and precision surfacing.
View serviceRestore worn journals to size and true running geometry. Crankshaft grinding returns main and crankpin journals to specification for use with matching undersize bearings.
View serviceRestore rod bores, alignment and fastener condition. We check, measure and recondition connecting rods so each rod is straight, correctly sized and ready for the rebuilt assembly.
View serviceCut and finish cylinders to exact size with the correct surface finish. Boring removes the wear and taper; honing produces the plateau finish new rings need to seat.
View serviceRestore alignment of bearing housings in one continuous set-up. Line boring re-machines main bearing bores so every saddle shares one true axis with the crankshaft.
View serviceA controlled, clean, torque-accurate build. We assemble reconditioned engines from measured components — so the finished unit leaves the shop built to specification and ready to run.
View serviceWorking service inventory
Beyond the major services above, PRT's day-to-day reconditioning work spans the individual jobs below. Each is listed so you can see the actual scope — and each one is handled through the same inspect, measure, machine and verify route.
Whole-engine and major-assembly work: strip, rebuild and reconditioned engines.
Crankshaft grinding, polishing, straightening, crack testing and measurement are carried out at PRT's crankshaft stations. Specialist dynamic balancing is arranged externally when required.
Camshaft bush and housing work plus valve-train reconditioning is carried out at PRT. Specialist camshaft grinding and straightening is arranged through external partners when required.
Related jobs handled alongside reconditioning. Where a process here is specialist — such as dynamic balancing, fuel-injection, injector, turbocharger or camshaft machining work — it is arranged through external partners when required rather than operated in-house.
Full recondition
The whole engine passes through the PRT process and is handed back rebuilt. Right when an engine is worth more rebuilt than replaced, and the block and head are serviceable.
Component machining
One component — a crankshaft, a head, a block — machined to the standard required by the rest of the rebuild, then returned.
FAQ
A full recondition takes the whole engine through the PRT process — strip, clean, inspect, measure, machine and reassemble. Component machining covers one piece of that route, such as grinding a crankshaft or reconditioning a head, carried to the same standard.
A recondition usually starts with your own engine or its components. Where a built unit is required, the specification is agreed first and confirmed from the actual work. Availability and lead times are confirmed on enquiry.
PRT carries out petrol and diesel engine reconditioning work. The correct scope for a specific engine is confirmed from the actual unit, its condition and its specification — the detail lives with the job, not with a generic claim.
Get a Quote
Tell us what you have and what it needs to achieve. Scope is confirmed from the actual unit and its measurements.