Im Derrück 12 · 76776 Neuburg am Rhein

Workshop appointments by arrangement

+49 173 7309058
DEENFR

Specialist field

A flat-six punishes guesswork.

Bearing damage, lost compression, oil consumption, swarf in the filter: the cause is only certain once the engine is stripped on the engine stand and the measurements are on the bench. We strip completely, measure every load-bearing component and record its condition before parts or cost are discussed. The same holds for a gearbox: the scope is decided by gear teeth, synchro rings and bearing clearances, not by assumption.

A&G Sportwagen Service — flat-six engine, section through the crankshaft axisTechnical section through a flat-six boxer engine: split crankcase, crankshaft with counterweights and main bearing shells, both connecting rods with pistons and rings, air-cooled finned barrels with Nikasil bores, four-valve heads with camshafts, finger followers and timing chain.

The overhaul

  1. 01

    Diagnosis

    Only once the picture is clear do we talk about scope and cost.

    Fault memory, compression and leak-down tests, borescope inspection of the cylinders, oil and filter checked for wear debris.

    Checks
    Fault memory · Compression · Leak-down · Borescope
    Sign-off
    Scope and cost only after the diagnosis

  2. 02

    Removal and strip-down

    Engine and gearbox come out of the car and onto the engine stand.

    The strip is complete: crankcase, crank assembly and cylinder heads end up in front of us as cleaned individual parts.

    Stripped
    Crankcase · Crank assembly · Cylinder heads
    Condition
    Cleaned individual parts on the stand

  3. 03

    Measurement

    Every figure is written down and compared against the manufacturer's specification.

    Crankshaft and connecting rods for size and runout, bearing clearances, cylinder bores, flatness of the mating faces, valve guides and valve seats.

    Check points
    Bores · Bearing clearances · Runout · Mating faces
    Reference
    Every figure against the manufacturer's specification

  4. 04

    Repair and assembly

    What goes in is what the measurements call for, not what happens to be on the shelf.

    Bores honed, mating faces skimmed, valve seats recut, plus bearings, piston rings, chains, tensioners and gaskets renewed as complete sets. Assembly in clean surroundings, every fastener to torque and angle, the clearances checked a second time before anything is closed up.

    Renewed
    Bearings · Piston rings · Chains · Tensioners · Gaskets
    Tightening
    Torque and angle, valve timing with the specified locking tools

  5. 05

    Test run and handover

    Once refitted, oil pressure and leak checks, warm-up and a road test.

    You receive the documentation of the work and a clear word on the running-in period, including the first oil change.

    Checks
    Oil pressure · Leaks · Warm-up · Road test
    Handover
    Documentation of the work, a word on running in
  • Sectioned through the crankshaft axis
  • Firing order 1–6–2–4–3–5
  • Independent master workshop · no franchised network

Services

Engine and gearbox rebuilds

The specialist field of the workshop: rebuilding Porsche flat-six engines and the gearboxes that go with them. The engine is stripped completely, every component cleaned and measured, the findings documented and gone through with you. It is rebuilt to manufacturer specification, with bearing clearances verified, every fastener to torque and angle, and the valve timing set.

Gearbox rebuild and repair

A crunch on the shift, a gear jumping out, noise under load: most gearbox faults can be put right without replacing the whole unit. We open the gearbox, check gear teeth, synchro rings, bearings and casing, and repair what can be repaired. Shaft seals and wearing parts are renewed as complete sets as a matter of course.

Timing chain replacement

A stretched timing chain announces itself with a rattle on cold start and with faults in the camshaft adjustment. Carry on driving and you risk the engine. We renew chains, tensioners, guide rails and sprockets as a set and reset the valve timing. On the BMW N47 and N57 the chain drive sits at the gearbox end, which makes the job a long one; for us it is routine.

Work

Before you call

Common questions

01What does an engine rebuild cost?
It depends on the engine. On our price page you choose the make and engine and see what the rebuild costs, what it includes and what can come on top. If the measurements show further damage, to the crankcase for example, you get the additional scope in writing, labour and parts listed separately. No part is ordered and no repair started without your approval.

All prices

02How long will my car be with you?
A rebuild is not an overnight job. Removal, stripping and measuring take the time they take, and then there are the parts to source, which on older models can vary considerably. After the diagnosis we give you a realistic window, and we come back to you if anything about it changes.
03Do I lose my warranty at an independent workshop?
As a rule the manufacturer's warranty stands, provided the work follows manufacturer specification, the parts used are of matching quality and the service is properly documented. That is exactly how we work. New-car, extended and used-car warranties, though, run on the terms of whoever issued them. Bring the paperwork with you and we will look at it before you decide.
04Are you an authorised Porsche workshop?
No. A&G Sportwagen Service is an independent master-certified workshop and belongs to no franchised network. We specialise in Porsche engines and gearboxes and work to manufacturer specification, and we do so independently. Among other things, that means we can repair where elsewhere an exchange unit is sold.
05Will you collect the car if it will no longer drive?
A car with engine or gearbox damage should not be moved under its own power; that often makes the damage considerably worse. We arrange transport through a transport company, at extra cost charged by the kilometre. We settle the procedure and the cost with you beforehand.
06Do I get genuine parts?
For engine and gearbox work we fit genuine parts, or parts from the relevant original-equipment supplier. Where there is a sensible alternative, we put both options in front of you with the price and the difference, and you decide. What was fitted is then set out on the invoice so you can follow it.
07Is there a guarantee on the work?
Our work and the parts we fit are covered by the statutory warranty (gesetzliche Gewährleistung). Where there are limits, for instance with components you supply yourself or with units on very high mileage, we raise it beforehand and put it in writing. Surprises after the fact are no part of the trade.
08Do you work only on Porsche?
The focus is Porsche, but this is not a single-marque workshop. We change timing chains on Audi, Mercedes-Benz and the BMW N47 and N57 diesels, and we carry out engine and gearbox work on other makes as well. Servicing, brakes, air conditioning and repairs we take on for all common marques.

Describe the damage.

The more precise the description, the more solid the first assessment: model, year, mileage, engine number or engine code, plus the noise, the fault code or the behaviour you have noticed.

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