Why Trust Us

We offer our 50+ years of 2-stroke engine experience, with preparation, performance modifications and rebuilds at very competitive prices.
All of our machining work is to the highest of standards, and engine building is legal to the relevant controlling bodies regulations, wherever you race.

ALL GENERAL LABOUR                                     
Labour – repairs, welding, kart strip/assy etc       $55 per hour
Kart tyre fitting                                                      $25.00 per set of 4
 Kart seat fitting     ..                                              $45.00 labour  plus any nuts, bolts, spacers

 CYLINDER PORTING
 50/60cc cylinder                                                       $110.00
 80cc to 125cc cylinder       ( includes KT100S )      $125.00
 150cc & up cylinder                                                  $165.00

 REBORES……each cylinder bore                               $70.00
 HONE…………each cylinder bore ..  steel liner          $40.00
                                                 …  plated bore              $49.00

 RESLEEVING …..each cylinder bore      from             $440.00
 Includes supply and fit sleeve and matching
 of the ports — piston cost is extra.   

 CRANKSHAFT ASSEMBLY AND TRUE
 Single conrod — motorcycle or kart engine                 $59.00
 Twin conrods                                      from             $219.00

 CYLINDER HEAD MODIFICATION
 Alter compression ratio, machine mating surfaces flat,
 re-cut squish angle and/or chamber shape.
 Single cylinder head                    (central plug)           $55.00
 ( if welding-up is required to obtain higher comp. ..  add $80.00 )
 Single cylinder head         (offset plug)         from    $75.00
 Twin cylinder head                         from                    $140.00

 CARBURETTOR MODIFICATION
 Boring or flowtuning gokart carb                     from           $39.00
 Boring or flowtuning motorcycle carb, including
    ‘Pro-series’ alterations to flatslide TM Mikuni                 $69.00

 WALBRO WB-3A carburetor tuning.
 
Blueprinting to AKA or AIDKA specs includes drilling,
 setting needle blow-off and lever height, modifying
 bore, adding o’rings and either NJ , NC or NC2 spec    …..    $79.00
 
 
Boring a WB-3A 25mm Yamaha carb to 27mm      ……        $79.00

 Supply and modify a new WB-3A carb,  any spec    …….       $225.00

 100cc KART ENGINE TUNING
 
Ignition test, timing mark setting                       …….         $50.00
 On all Yamaha KT100J and KT100S, and ARC ignitions

 Rebuilding complete engine.    labour only                  $300.00 **
 Strip, inspect and rebuild an engine
 ** Plus the parts required, as needed.

 Blueprinting 100cc Kart Engine     labour only               $360.00 **
 ** Plus the parts required, as needed.
 (Includes Dyno run-in and Ignition timing test)
 As a guide –  a new KT100S or KT100J requires at least
 $500 more in parts. For a used engine this can be $700 .

 Top End Blueprint            labour only              ………          $180.00 **
 – ie cc’ing cylinder head, altering ignition timing,
 and replacing head and base gaskets as needed.
 **Plus any other parts required, ie ring or crank seals.

 Dirt Kart KT100S Motor “race tune”   labour only   …..   $360.00 **
 
Includes porting cylinder, cc’ing head, alter piston,   
 bore and setup carb, and set ignition timing.

 or “fully modified tune” as above but also with
       full engine blueprint, porting cylinder ….. labour only    ……..   $490.00 **
 
**Plus any parts required, ie piston, ring, gskts etc.
 

 
ROTAX FR125MAX engine tuning & repairs.
 

 Top-end rebuild  …..  cost incl parts & labour         $685.00
 
This includes crank oil seals, piston pin & bearing,
 piston/ring & clips, gear cover gasket and oil,
 top O-ring set, reed and base gaskets, spark plug.
 
We recommend this is done every 20 – 25 hours .

 Complete engine rebuild  ….  cost incl parts & labour        $1,580.00
 
This includes main bearings, all oil seals, complete o’ring set
 and gasket set, piston pin & bearing, piston/ring & clips,
 complete con rod assy, clutch bearing, spark plug.
 We recommend this is done every 50 hours .
 
 
IAME X30 engine tuning and repairs.

 Top-end rebuild  …..  cost incl parts & labour       $620.00
 
This includes crank oil seals, piston pin & bearing,
 piston/ring & clips, gear cover gasket and oil,
 top O-ring set and base gaskets, spark plug..
 
We recommend this is done every 8 to 10 hours .

 Complete engine rebuild  ….  cost incl parts & labour      $1,490.00 ( $1,690 with roller main bearings )
 
This includes main bearings, all oil seals, complete o’ring set
 and gasket set, piston pin & bearing, piston/ring & clips,
 complete con rod assy, clutch bearing, spark plug.
 
We recommend this is done every 30 hours .
 
 
IAME KA100 engine tuning and repairs.

 Top-end rebuild  …..  cost incl parts & labour       $560.00
 
This includes crank oil seals, piston pin & bearing,
 piston/ring & clips, and base gaskets.

 Complete engine rebuild  ….  cost incl parts & labour      $1,420.00 ( $1,560 with roller main bearings )
 
This includes main bearings, all oil seals, complete gasket
 set, piston pin & bearing, piston/ring & clips, 
 complete con rod assy, clutch bearing.

 Vortex MiniRok tuning and repairs.

 Top-end rebuild  …..  cost incl parts & labour       $445.00
 
This includes crank oil seals, piston pin & bearing,
 piston/ring & clips, and base gaskets, carb gasket kit.

 Complete engine rebuild  ….  cost incl parts & labour      $1,195.00
 
This includes main bearings, all oil seals, complete gasket
 set, piston pin & bearing, piston/ring & clips, spark plug,
 complete con rod assy, clutch bearing, carb gasket kit.

 THREAD REPAIRS
 
4-5-6-8-10mm Helicoils – fitted                                    …..          $20.00 each
 14mm spark plug Helicoil – fitted                                 ….           $25.00 
 8 or 14mm Timeserts (flanged inserts)- fitted               …..           $25.00 each
 Spark plug thread in KT100 Yamaha – weld and retap …              $195.00

 
 
CYLINDER BORE REPLATING
 
Most plated cylinders can be replated – Chrome/Electrofusion/Nikasil.
 Also any damage repaired or welded and bore replated to suit the original piston and rings,
 either genuine or aftermarket brand.
 Chrome rings may be used in Nikasil
® plated bores for long life.

 Delivery time is usually under 2 weeks. This service is now performed within Australia with lower prices and faster turnaround.
 ( If you are wondering about the quality of the Australian repairs, a customer with a Rotax 125 Max has
 had his done here and it lasted through 4 pistons for over 100 hours of racing ) 
 

 Prices vary depending on cylinder size ………
             2 strokes  —  50cc to 124cc   …  $460.00 each bore.
                                     125cc to 150cc   …   $490.00 each bore
                                     200cc to 250cc   …   $590.00 each bore
                                     300cc to 500cc …    $660.00 each bore

             4 strokes  —  up to 250cc   …   $490.00 each bore
                                    400cc to 490cc   …  $590.00 each bore
                                     500 + cc     ….     from $620 each bore

 Reboring to larger bore size than standard, or rewelding repairs can be an extra $100.00
 
 
EXHAUSTS  
 We manufacture 2-stroke exhaust systems from zinc-annealed or plain mild steel in 16 to 22 gauge (depending on
 application). In the case of motorcycles, Odysseys, gearbox Superkarts, etc, the pipes are made and installed
 directly onto the machine — hence we need the bike, car or kart in our workshop for this to be done. 

 We can supply any set of “expansion chamber” cones ,  in a straight form to your design, or ours  each cone is $20
 
 MOTORCYCLES

 Motocross and trail-bike, single cylinder engine
 exhaust pipe only, using original muffler …….                        $395.00

 Street and Road-racing bikes, parallel twin (RD, RG etc)
 
2 pipes with mounts, flanges, mufflers complete …..              $1,100.00

 100cc  SPRINT/DIRT KARTS
 “GRUNT-5” KT100S pipe ( uses normal 100cc flex )
 Our latest spec pipe for AIDKA ……..                                $165.00

 “JH” KT100J pipe for all AIDKA dirt classes ….                 $145.00

 “MR1” KT100S dirt kart speedway pipe.
 Comes with 90 degree bend, has large type belly.
 Requires a straight header .                                 ………..    $245.00

 Big-Bore header, 36mm ID, suit KT100S & KT100J
 ( available in lengths 165mm to 200mm )
 As used in  KartsportSA and AIDKA   Powermac brand   …….   $155.00

 Big-bore header,  34mm ID specially to suit KT100J
 ( available in 200mm length )  ………          $155.00 

 KART BUILDING & REPAIRS
 Our karting history began in the 1950’s, with the late Bob Williams and a few friends making some of the earliest karts
  in Australia.  Today we supply the best that the industry can give us to help our customers find that winning edge.
 The preparation of any kart is mainly dependant on its intended use, so it is hard to ‘quantify’ such a process into
 a dollar value.  But here are some regular jobs that we perform that will act as a guide. 

 Re-powdercoat a bare chassis  …  must be stripped bare             from $185.00

 Re-jig and powdercoat an ARROW brand chassis …  must be
 stripped. Takes up to 4 weeks and is done at the DPE factory        $650.00

 Seat fitting  …  labour only                                 …………          $45.00  
 may require extra nuts+bolts/spacers at extra cost

 New air-cooled engine + kart assembly, to race-ready condition
                                       At the time of purchase from us …….      Included in kart cost

 New 125cc TaG engine + kart assembly, to race ready condition
                                       At the time of purchase from us ………    Included in kart cost

 Assembly of a ROTAX MAX , Leopard , KA100 or MiniRok
 engine onto your chassis, new or used    ……..                           $180.00   plus any parts

 Assembly of a 4 stroke Torini Clubmaxx engine onto your chassis,
 new or used , includes new chain, rear sprocket, new tyres, cable    …….       $680.00 ready to go race !!
 

     DYNO SERVICES      
 Dyno services rates
 
Run-in a KT100S , MiniRok , KA100 or Torini kart engine    …….      $70.00
 Run-in a 125cc Rotax or Leopard engine      ….          $90.00   ( only $50 after a rebuild by us )
 Single testrun with printout on 100/125cc watercooled ….              $170.00

 Hourly rate in dyno room for testing  ….                                       $110.00
 This includes printouts of all testruns performed, and all labour in making alterations or modifications necessary
 to engines or pipes as required while testing ( plus parts cost ). 

 Prices correct as at July 2023 — but subject to change anytime.

Ultrasonic Parts Cleaning

This is just something to see,  carbs, alloy engine mounts or crankcases can be cleaned to look as new!!   

Old carbs that have corroded due to the use of methanol and other exotic fuels can also be cleaned up. 

Soda Media Blasting

This is a method of cleaning all of the alloy parts of an engine and carbs that has been impressive.

We can clean up most used parts, and even fire damaged and tarnished cylinders, heads and crankcases have been brought back to looking like new again.

2 Stroke Cylinder Porting - It's what we do best!!

Our many years of 2 stroke engine tuning includes our never ending work in performing cylinder modifications. 

We use porting tools that work,  and with such a vast experience in this very delicate and demanding area we can usually provide a job that is the equal of anything from across the globe.

Ignition Testing & Timing

We are setup to handle Yamaha KT100S and KT100J ignitions (which covers the ARC also), so if you have one that needs testing, or you want accurate timing marks engraved on yours, then we can help you. 

Kart Tyre Fitting

We have the right tools and the know-how to make changing kart tyres easy. 

Walbro WB-3A Carburetor Tuning & Modifications

In 2006 we spent many hours out testing with our junior drivers in the National classes.  By the end of 2006  we were able to produce a better performing WB-3A carburetor with revised drillings and o’ringed throttle shaft.  This was our 1612 version carb.

Thru 2013 we improved the carb, now offering an NJ model carb with even better response.

Engine Tuning & Repairs

We apply 50 years of experience to:
– Top-end rebuilds
– Complete engine rebuilds
– Blueprinting
– Dirt Kart “race tune” or “fully modified tune”

Thread Repairs

Including Helicoils, Timeserts (flanged inserts), and Spark plug thread weld and retap

Cylinder Bore Replating

Most plated cylinders can be re-plated – Chrome/Electrofusion/Nikasil. Also any damage repaired or welded and bore re-plated to suit the original piston and rings, either genuine or aftermarket brand. 

Chrome rings may be used in Nikasil® plated bores for long life.

Exhaust Manufacture and Sales

We manufacture 2-stroke exhaust systems from zinc-annealed or plain mild steel in 16 to 22 gauge (depending on application). 

In the case of motorcycles, Odysseys, gearbox Superkarts, etc, the pipes are made and installed directly onto the machine – hence we need the bike, car or kart in our workshop for this to be done. 

Kart Building & Repairs

We supply the best that the industry can give us to help our customers find that winning edge. 
Service include:
– Re-powdercoat a bare chassis
– Re-jig and powdercoat an ARROW brand chassis 
– Seat fitting
– New Air-cooled engine + kart assembly, to race-ready condition 
– New 125cc TaG kart assembly, to race ready condition
– Assembly of a ROTAX MAX , Leopard , X30 , KA100, MiniRok or Torini engine onto your chassis, new or used

 

Dyno Services

Dyno room for testing includes printouts of all testruns performed, and all labour in making alterations or modifications necessary to engines or pipes as required while testing.