Your engine is the heart of your vehicle. A secondhand engine is not always the most effective repair option long term. The experienced team at QAM can rebuild your engine to the same standard and specification as the manufacturer.
QAM has a reputation when it comes to Engine Reconditioning, the team will take the time to discuss your needs and will leave you with a quality service that is guaranteed.
Why Recondition an Engine?
Before any work starts, a thorough inspection of the engine is carried out to understand the repairs and work required.
QAM provides services for a number of procedures to recondition an engine, including:
- We provide complete engine reconditioning for any engine – short block and long block, petrol and diesel, motorcycle to bulldozer. We provide classic car engine rebuilds and are vintage Jaguar engine specialists.
- Crankshaft – polishing, grinding, balancing and crank snout repairs, seal track repairs
- Engine block – reboring, re-sleeve, corrosion repairs, liner manufacturing when parts are not obtainable, internal water jacket sealing, frost plug lens to cup style machining, crack repairs
- Power honing – honing of bores on all manner of cylinders to very small internal dimensions and fine tolerances
- Pistons – piston ring replacement, fitting of pistons onto connecting rods, balancing piston weights (if required)
- Cam bearing replacement and tunnel alignment
- Engine balancing, rotating assembly balancing, flywheel balancing, flywheel lightening
- Conrods – crack testing, resizing, small end / gudgeon pin bush replacement, straightness and alignment checking, big end bearing fitment and clearance checking, conrod balancing
- NDT – Non-destructive crack testing services for all components using magnetic particle and dye penetrant
- Intake and exhaust manifolds – surfacing and repairs
- Thread repairs – stud removal and replacement, re-tapping of repairs, HELICOIL and key inserts, sump plug repairs
- Cleaning of oil galleries and replacement of gallery plugs
- Hot Tank chemical cleaning
- Metal Spray – repairs to damaged seal track and bearing areas, fitting of torrington / speedy sleeves
- Specialist welding repairs – Tig Pulse / Mig / ARC – stainless steel / aluminium / cast iron / steel
Our cylinder head department can provide full reconditioning and remanufacturing to all cylinder heads, large or small.
- Strip and clean – hot chemical tank cleaning and bead blasting & decoking where required, including oil gallery brushing and fitting of threaded gallery plugs
- Test and inspect – we check all cylinder heads thoroughly: pressure testing / hot water pressure testing, straightness testing, hardness testing, vacuum testing, NDT Electromagnetic crack detection
- Removal and replacement of valve guides – replacement of standard valve guides, fitting of K-line inserts, reaming of valve guides, custom manufacturing of valve guides
- Fitting of new valve seats – removal of old valve seats, refacing of valve seats, machining multi valve seats, replacement with new hardened valve seats (popular option for restoring older cylinder heads that could not run on unleaded fuel)
- Valves – check, clean and reface valves and valve modifications (fitting larger valves)
- Valve Springs – check spring tensions and adjust as required
- Surfacing of cylinder head – ensuring correct mating surface finish and tolerances
- CC (Combustion Chamber Volume) head – combustion chamber volume and compression ratio calculating
- Set lash tolerances – shim adjustments and cleaning and bleeding hydraulic lifters
- Replace studs – removing broken bolts and studs, including thread repairs fitting HELICOIL or nutsert if required.
- Injector tube – removal and replacement of injector tubes for heavy diesel cylinder heads
- Pre combustion – removal and replacement of pre combustion chambers for Diesel cylinder heads
- Cam followers – resurfacing cam followers and rocker faces
- Oil pump – repair and/or replacement of engine oil pumps
- Water pump – repair and replacement of engine water pumps, remanufacture if required
- Pushrods – repairs and replacement of pushrods, remanufacture if required
- Camshaft clearances – camshaft lobe clearance for high lift camshafts
- Fitting of aftermarket camshafts and camshaft regrinding or profiling of camshafts including dialling in Camshaft timing for adjustable cam gears.
- Straightening of cylinder heads – straightening of bent cylinder heads when required
Aftermarket cylinder head supply – we can supply aftermarket cylinder heads if required, these include; bare cylinders heads, re-assembled using the original manufacturers components; complete cylinder heads with aftermarket components; bare cylinder heads (no components); components only (i.e., valve train components); ancillary parts such as gaskets set, head bolts etc.
Our precision engineering department recondition and machine brake drums, brake rotors and drake discs to exacting tolerances and achieve the correct finishes required, thereby restoring the braking surface finish. We have several machines specifically for this purpose. We use counter rotating cup grinding technology to machine slotted and cross drilled performance and race car brake rotors that cannot be machined by traditional methods.
Our team also repair brake master cylinders, clutch master cylinders, brake wheel cylinders and clutch slave cylinder bores by machining the internal bore and inserting a specifically machined stainless steel insert to restore the worn internal sleeve and add durability.
Our heavy-duty brake lathe machines are ideal for machining large truck and heavy earthmoving equipment brake drums.
Flywheel Machining / Flywheel Lightening
We machine flat and recessed truck and earthmoving equipment flywheel surfaces. Heavy equipment and truck flywheels require a specific finish, and we can machine these to the required finish. Balancing of heavy flywheels is available on request.
We machine car and light commercial vehicle flywheels to the required specification. Flywheel lightening and balancing for performance car and race car applications are available and we usually require the clutch assembly to dynamically balance the assembly for better results.
The team at QAM have the skill, experience and equipment to manufacture, repair or modify your driveshafts / propshafts as required. We also repair and balance large flails and mower shafts. We manufacture, modify and recondition any driveshaft application:
* Automotive driveshafts
* Truck driveshafts and Jack shafts
* Marine driveshafts
* Industrial equipment driveshafts
* Heavy Equipment / Off Highway driveshafts
* PTO shafts (power take off)
Driveshaft services:
- Remanufacturing – complete reconditioning of driveshafts, including balancing
- Altering – changing the driveshaft layout to include or exclude centre bearing
- Re-tube – replacing the driveshaft tube due to damage, strengthening or lengthening
- Length adjustment – shorten or lengthen
- End changes for modifications – changing the yoke or flange configuration to suit modifications to the vehicle
- Spline section replacement – replacement of spline sections for modifications or damage due to wear
- Universal joint replacement – replacement of universal joints due to wear or to strengthen
- Centre bearing replacement – replacement of centre bearing due to wear or location change for modifications
- Yoke replacement – replacement due to damage, wear, strengthening or modification
- Changing staked universal joints – changing the yoke to accept inside or outside clip joints
- Replacement of worn centring bushes – manufacture of new bushes if no longer available
- Replacement of rubber couplings – replacement of worn rubber bushes and components
- Replacement of slip joints – replacement of worn slip joints and spines
- Replacement of CV coupling joints – replacement of worn CV coupling joints and rubber boots
- Replacement of joint rubber boots – worn and cracked rubber boot replacement
- Balancing – dynamic balancing of driveshafts to ensure reliability is not compromised and vibrations are eliminated
- Custom build driveshafts for any application.
Dynamic Balancing
Our engineering department carry out dynamic balancing of all manner of shafts and rotating assemblies using our long bed balancing machine. Balancing is carried out to eliminate vibrations that will cause premature component failure and compromise reliability. When a shaft is rotating at high speed and is not balanced correctly, it affects the performance and increases the energy required and could lead to safety being compromised. Our balancing work is not only for driveshafts but extends to a wide variety of components.
We supply dynamic balancing services for:
Marine Applications / Handling Equipment / Forestry industry / Industrial / Harvesting / Pulp / Fertiliser / Trucking / Heavy Earthmoving Equipment to name a few
Big or small, we can balance …
* Crankshafts
* Flywheels
* Propshafts
* Driveshafts
* PTO shafts
* Propeller shafts
* Impellers
* Fans
* Armatures
* Crushing drums
* Drying tumblers
* Impellers
* Propellers
* Flails
* Mower assemblies
* Wheel rims
We machine mandrels, flanges, fittings and jigs to adapt the assembly to our balancing machine.
Line Boring and Portable Line Boring
Our CNC (Computer Numerical Controlled) Line Boring machines are used to repair, and machine worn holes. Automated bore welding allows us to weld and then machine the hole or eye back to its original dimensions or bore it out to accept a bush. Where multiple holes need to be collinear (precisely lined up), we line bore centrelines to be accurately linear. We also machine the external flange faces in relation to the hole to accurately match. We also machine circlip and retainer grooves into the holes as required.
Once the hole has been repaired, we machine and supply pins and bushes to fit accordingly. Hardened pins can also be supplied if required.
All industries have machines with moving parts that probably have bores and pivots that must be accurately linear for the machine to operate correctly.
Transporting machinery and equipment can be very time consuming and costly, QAM have experienced engineers that can come to your worksite with a Portable CNC Internal Mig Welder and Line Boring machine to cater to all your machining needs. In most instances we are able to machine the holes in place and where the machine is located and therefore saving cost on complete disassembly and transport. We have a fully equipped mobile workshop that will come to site and complete the machining.
With experience and state of the art machines we are able to repair equipment in industries such as: Earthmoving / Heavy Lifting Equipment / Mining and Quarry Equipment / Transport / Port Operations / Agricultural.
Most industrial Line Boring machines are used on a wide range of projects, with some common examples including, but not limited to:
- Excavator Buckets and Mounts
- Large Machine Pivots
- Gearbox Housings
- Stern Tubes and Rudder Bores in the shipbuilding industry
- Driveshaft Housing Boring
- A-Frame Supports
- Hinge Pins
- Worn Holes on all Equipment and Machinery
- Parallel Boring
- Machining the outside face of a work piece
- Build up and weld holes from 25mm to 450mm to exacting tolerances
Magnetic Particle and Dye Penetrant testing is a non-destructive testing process for detection of surface and slightly sub surface cracks or defects in materials such as iron, nickel, cobalt and some alloys.
There are many benefits to Magnetic Particle and Dye Penetrant Inspections:
- Quick to carry out so any defects are indicated straight away. This means results are immediate and no waiting times.
- It shows surface and near surface defects
- It is cost effective
- The Magnetic Particle and Dye Penetrant inspection is portable so it can be used at the workshop or done on site to save you time. It is useful in confined spaces and can be done on small and large items quickly and efficiently.
There are many components that can be tested including:
- Fan Blades
- Axles
- Twist Locks
- Gears
- Hydraulic Rams
- Pulleys
- Stub Axles
- Steering Components
- Rims
- Gear Box Housing
- Chain Links
- U Bolts
- Engine Blocks
- Cylinder heads
- Crankshafts
