Mt. Petersen Track (just out of Ma Ma Creek township)
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Club Website & Contacts
http://www.lvdtkc.asn.au/
Information for Engines
4 stroke air cooled petrol engines only
Vanguard 6HP (current standard engine)
Bore - 68mm
Stroke - 50mm =181cc
20 thou oversize for rebuild = 185cc
Vanguard 200cc (current modified engine)
Bore - 71mm
Stroke - 50mm = 197.96cc
10 thou oversize for rebuild = 199.35cc
Intec - standard
6.5 Vanguard - standard
Bore - 68.28mm
Stroke - 55.88mm = 204.61cc
20thou oversize for rebuild = 208cc
Honda GX200
Bore
Stroke
6 Hp Vanguard (115432,117432)
Vanguard 185cc (Junior & Senior)
Fuel - Unleaded pump fuel only
- May use 2 stroke tank & pulse pump
- No electric pumps
Head - Max 20thou off for repairs – no porting
Exhaust - Replaced by approved equivalent
- Must remain under 70 decibels at 80m and 1.5m high
Carby - Must be factory standard for that series engine
- Main jet may be changed and relocated
- Adjustable jet is allowed, but not to be adjusted while kart is in motion
- No alteration to emulsion tubes and no over sizing of Venturi
Crankshaft - Disc oil pump can be fitted
- No balancing or knife edging
Con Rod - Billet item may be used (ie. ARC #6264)
Ignition - Timing may be advanced (not cam timing)
- Coil must be factory standard for that series engine
Camshaft - Standard with series – no changes ( Inlet valve 9’ ATDC open, 29’ ABDC at 050’lift)
( Exhaust valve 33’ BBDC. 8’ BTDC at 050’lift)
Max Lift .268’’
Governor - May be removed
Valves - Springs may be changes to prevent bounce ( p/n 14751-459-000 )
- Valves & retainers on the 118 series may be replaced with the 117 series item.
Air Filter - May be replaced, but intake piping not to be higher that the standard tank height
Piston/Block - May be rebored to 020’’ over for rebuild.
Stroke - To stay standard
Starter - Pull start only
Flywheel - Standard flywheel for that series engines, no balancing or machining or lightening
200 Class (Mod 3) 6.5 Hp Briggs & Stratton (new standard engine)
Intec 208cc (Junior & Senior)
Model No. 1223324200B8
Serial No. 1003138883696
Model No. 13H332
Type No. 0133B8
Fuel - Unleaded pump fuel only
- May use 2 stroke tank & pulse pump
- No electric pump
Head - 20thou off for rebuild – no porting
Exhaust - Replaced by approved equivalent
- Must remain under 70 decibels at 80m and 1.5m high
Carby - Must be factory standard for that series engine
- Main jet may be changed & relocated
- Adjustable jets allowed, but not to be adjusted while kart is in motion
- Venturi must not be oversized, or alterations to emulsion tubes
Crankshaft - No oil pump needed
- No balancing or knife edging
Con Rod - Billet item may be used #557117 Briggs
Air Filter - May be replaced but intake piping not to be higher that standard tank height
Governor - May be removed
Camshaft - Standard item – no changes
( Inlet valve 7’ ATDC open, 27’ ABDC at 050’lift)
( Exhaust valve 37’ BBDC. 14’ BTDC at 050’lift)
Max Lift .244’’
Ignition - Timing may be advanced (not cam timing)
- Coil must be factory standard for that series engine
Piston/Block - 20thou oversize for rebuilds
Stroke - Stock standard
Valves - Valves, springs & retainers to be replaced with animal items (due to
Intec having slide in collets) #555551 Inlet, #555552 Exhust, 36Lb dual springs #AS0332
Starter - Pull start only
Flywheel - Standard flywheel for that series engines, no balancing or machining or lightening
200 class (Mod 3) Honda GX200 or e Chines Equivalent 196cc
(standard engine)
Fuel - Unleaded pump fuel only
- May use 2 stroke tank & pulse pump
- No electric pumps
Head - Max 20thou off for repairs – no porting
Exhaust - Replaced by approved equivalent
-Must remain under 70 decibels at 80m and 1.5m high
Carby - Must be factory fitted for that series engine, with no over sizing of Venturi, or alterations to emulsion tubes
-Main jet may be changed and relocated
-Adjustable jet is allowed, but not to be adjusted while kart is in motion
Crankshaft - Disc oil pump can be fitted
- No balancing or knife edging
Con Rod - Billet item may be used (ie. ARC #6270 )
Ignition - Timing may be advanced (not cam timing)
-Coil must be factory standard for that series engine
Camshaft - Standard item – no changes
( Inlet valve 11’ ATDC open, 31’ ABDC at 050’lift)
( Exhaust valve 27’ BBDC. 1’ BTDC at 050’lift)
Max Lift .235’’
Governor - May be removed
Valves - Springs may be changed to prevent bounce
- Valve springs & retainers to be replaced with collet retainers (due to Honda having sliding collets) #
Air Filter - May be replaced, but intake piping of filter not to be higher than that of the standard tank height
Piston/Block - May be oversized 20thou for maintenance or rebuilds
Stroke - To stay standard
Starter - Pull start only
Flywheel - To be replaced with ARC aluminium flywheel for safety reasons. ARC #6619
200 Class (Mod 3) LO206
Fuel - Unleaded pump fuel only
- May use 2 stroke tank & pulse pump
- No electric pump
Head - 20thou off for rebuild – no porting
Exhaust - Replaced by approved equivalent
- Must remain under 95 decibels
Carby - Must be factory standard for that series engine
- Main jet may be changed & relocated
- Adjustable jets allowed, but not to be adjusted while kart is in motion
- Venturi must not be oversized, or alterations to emulsion tubes
Crankshaft - No oil pump needed
- No balancing or knife edging
Con Rod - Billet item may be used # ????
Air Filter - May be replaced but intake piping not to be higher that standard tank height
Governor - May be removed
Camshaft - Standard item – no changes
( Inlet valve ? ATDC open, ?’ ABDC at 050’lift)
( Exhaust valve ?’ BBDC. ?’ BTDC at 050’lift)
Max Lift .?’’
Ignition - Timing may be advanced (not cam timing)
- Coil must be factory standard for that series engine
Piston/Block - 20thou oversize for rebuilds
Stroke - Stock standard
Valves - Valves, springs & retainers ??????
Starter - Pull start only
Flywheel - Standard flywheel for that series engines, no balancing or machining or lightening
Modified 1 & 2
Modified 208cc
Fuel - No methanol or alcohol
- Unleaded fuel only
- Can use 2 stroke tank & pulse pump
- No electric pumps
Head - May be welded & ported
- Valve/springs no limitations
Exhaust - May be changed & remain under 95 decibels
Carby/Filters - No limitations
Cam/Rod - No limitations
Ignition - No limitations
Piston, Block & Stroke - May be changed to obtain 208cc
Starter - Pull start or electric start
Batteries - For ignition or otherwise must be dry cell & located in a protective box
Flywheel - No modifications to standard factory flywheels, for safety reasons
- Billet flywheels are available
