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Mechanical
repair

UNDERSTAND THE FAULT BEFORE PRICING THE REPAIR.

Engine, transmission, injection

techtronic - Engine and gearbox mechanical repair

An engine that burns oil, a gearbox that crunches, a turbo that whistles: these are symptoms, and several very different causes can produce them. Replacing the part without dealing with the cause means doing the same repair again a few months later.

We first establish the origin of the fault, explain it to you, and then we price the work. Most common jobs:

  • Engine rebuild and head gasket replacement.
  • Cylinder head reconditioning: flatness, valves, guides.
  • Gearbox: manual, automatic or dual-clutch.
  • Clutch and dual-mass flywheel.
  • Turbo and injection (common rail).

Diagnosis carried out before the quotation.

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Engine

JobWhat it covers
Full rebuildRemoval, inspection of the block, machining, piston rings, bearing shells, reassembly to the manufacturer's torque settings
Cylinder headFlatness check, gasket replacement, lapping or replacement of the valves and guides
Jumped timingAssessment of the damage, replacement of bent valves, complete re-timing
Oil consumptionCompression and leak-down testing to establish the cause before any quotation
Head gasketDiagnosis by testing for combustion gases, removal, check of the gasket face

Transmission

JobWhat it covers
Manual gearboxRepair or exchange unit, synchromesh, bearings, oil seals
Automatic gearboxOil change with filter replacement, mechatronics, electronic re-adaptation after the work
Dual clutchClutch, mechatronics, relearning of the bite points with a diagnostic tool
ClutchComplete kit, dual-mass flywheel, hydraulic release bearing, system bleeding

Turbocharging and injection

JobWhat it covers
TurbochargerReplacement, check of the variable geometry, search for the cause of the failure
InjectorsBack-leak testing, replacement, coding of the correction values into the ECU
High-pressure pumpCheck of live rail pressure, replacement, system bleeding
EGR valve and intakeCleaning or replacement, decarbonising of the intake manifold

A few jobs from the workshop

Complete rebuild of a Toyota 1GR-FE V6 engine from an FJ Cruiser at the Techtronic workshop

Toyota 1GR-FE, V6 4.0 — FJ Cruiser engine fully rebuilt, reassembled and ready to be refitted.

Block and cylinder heads of a V8 HEMI being rebuilt at the Techtronic workshop

V8 HEMI — block repainted, cylinder heads removed, gasket faces protected before reassembly.

Cylinder heads and valvetrain of a V8 HEMI during reassembly at the Techtronic workshop

The same V8 during reassembly — rocker gear and valve springs in place, ports masked off while the engine is open.

Both of these engines were stripped, inspected and reassembled at the workshop. A block is opened up to be measured, not to be replaced blindly: it is this inspection that determines whether a rebuild is justified, and what it should include.

Diagnosis always comes before the quotation

A turbo never fails without a reason. Lack of lubrication, bearing play, a clogged oil return, a torn air filter: the cause leaves traces, and it must be found before ordering the part. A repair that only deals with the symptom will come back.

This method comes from our core business. Techtronic has been repairing automotive electronics since 2009 and prepares competition engines, including for the French Truck Racing Championship. On a race vehicle, a part that breaks twice is not an option: we look for the cause, always.

This electronics expertise also serves heavy mechanical work. Reading live injection parameters, checking the actual rail pressure rather than a fault code, coding injectors after replacement, re-adapting an automated gearbox: all steps that make the difference between a repair that lasts and a repair that comes back. See also our engine remapping and electronic repair pages.

Frequently asked questions

It depends on the extent of the damage and the value of the vehicle. A cylinder head or jumped timing can almost always be repaired. A scored block calls for a choice between a rebuild and an exchange unit. We price both and let you decide.
The time spent establishing the cause of a major fault is charged, and it is deducted from the quotation if you entrust us with the repair. This is what allows us to give you a firm price rather than a price range.
Generally allow one to three weeks. The lead time depends on the inspection of the block, the machining work and the supply of parts. It is stated in the quotation and we keep you informed of progress.
Yes. The duration depends on the type of work and the parts used: it is shown on the quotation and on the invoice. For a rebuilt engine, the warranty is conditional on observing the running-in period and the first oil change, the terms of which are given to you in writing.
Yes, even when the manufacturer claims the oil is for life. An oil change with filter replacement at regular intervals prevents most mechatronics and torque converter failures, whose repair costs several times the price of the servicing.
Because the cause was not dealt with. A turbo rarely fails on its own: most often, the lubrication circuit, the oil return or the intake is to blame. We systematically check these points before fitting a new part.

Pont-Audemer / Honfleur and Le havre

Workshop located at 676 route de Beuzeville, 27210 Boulleville, France.

Request a quote +33 2 77 18 63 88

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