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  1. Cactus Jack

    what size Accelerator Pump carb

    It depends on if the carb has a round or oval bore ... Oval bore carbs are smaller in flow than their outlet bore so a "30" Mikuni for instance is actually a 26 mm carb... You add the height and width of the venturi at the slide together then divide by 2 to get the actual carb size ... Round...
  2. Cactus Jack

    Lifan 140 woes

    That filter material on the intake will be choking the engine ... Backfiring through the carb indicates a non seating intake valve or ignition timing way out ...
  3. Cactus Jack

    Are the rocker arms same for exhaust and inlet valves?

    They run .003" inch (.07 ~ .08 mm) inlet and .004" inch (.10 mm) exhaust ... Slight tappet noise is normal ...
  4. Cactus Jack

    Apollo DB-25 70cc fully auto - Starting problems...

    Great to see that you solved the problem ... Not many people would know what you found by checking it out for yourself !
  5. Cactus Jack

    Best Pit Bike forks for value

    You'd have to try either local pitbike dealers or try dhz.com.au ... Fast Ace and DNM used to have good forks but they're not cheap ... When asking about forks you need to know the length of yours , fork tube and triple clamp dimensions and what bearing sizes the frame takes ...
  6. Cactus Jack

    PARTS for an Apollo 125 Model AGB-37CRF-1

    You're better off contacting an Apollo dealer since parts to fit them don't fit a lot of other bikes ...
  7. Cactus Jack

    Lifan 150cc with 140 Lifan CDI and stator plate (Full wiring)

    You have to visually check to make sure the choke is on or off ... I've seen a lot of cases where ppl thought the choke was on when it was off ... The first thing you should always check are the valve clearances (.003" inlet - .004" exhaust) ... A non seating inlet valve sends cylinder pressure...
  8. Cactus Jack

    Should I change my oil filter?

    If it's JASO-MA spec or non friction modified (energy efficient) it'll be OK ... It doesn't hurt to check the oil spinner and clean it if it's dirty ...
  9. Cactus Jack

    WTB: yx140 crankshaft

    YX140 PIT Dirt Bike Crank Shaft YX 140 140cc Pitbike Crankshaft 56 3mm Stroke | eBay
  10. Cactus Jack

    1997 Yamaha RT 100

    Here's some great info on autolube ...Dan's Motorcycle Two Stroke "AutoLube" Oil Pumps
  11. Cactus Jack

    Honda XR75 1977-1978 Paint Codes

    And how to mix Tahitian Red ... Honda Tahitian Red Paint Mixing Ratio Codes - Vintagehonda.nl
  12. Cactus Jack

    Honda XR75 1977-1978 Paint Codes

    It looks like the number you're after is Colour code R-23 ... https://www.motorcyclespareparts.eu/honda-parts/honda-color-codes.aspx And ... Honda Paint Codes
  13. Cactus Jack

    Suzuki JR50 Plastics

    78 81 JR50 Jr 50 New Front and Rear Fender Kit Suzuki Genuine | eBay 85 95 JR50 Jr 50 New Front Fender Rear Fender A Number Plate Plastic Kit | eBay
  14. Cactus Jack

    Budget power upgrades on a 125cc lifan.

    TB 141cc Big bore kit 14mm Pin - Pit Bike Engine Parts - LIFAN KITS - TBW9067 - TBolt USA, LLC Race Cam Kit for Piranha YX Lifan 27/23mm Heads - Pit Bike Engine Parts - CAMS - WHS-1638 - TBolt USA, LLC PIT Bike Race CAM FOR Piranha YX Lifan 140cc 150cc | eBay
  15. Cactus Jack

    Terra moto Krusha 125 transmission

    That motor looks like the old kick start in neutral only Zongshens ...
  16. Cactus Jack

    yx150cc crankshaft to yx140cc block

    There is a YX150 that is based on the Honda Nice engine like Lifan big valve 125/140/150 and YX140's ~ They were very well known as the YX150 DTE-5 and had the Daytona type clutch cover with replaceable filters ... Their bore was 56 mm and their stroke was claimed to be 60 mm ~ Moteur 149...
  17. Cactus Jack

    WTB axle suit FastAce AS02's

    I checked the ad you posted for the axle and it's for : Item specifics Condition: New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition Brand: Risse Racing Technology Material: Aluminum MPN: 24364 For...
  18. Cactus Jack

    WTB axle suit FastAce AS02's

    Someone might have something to say about this being posted here BUT ... What size are the axle bores thru your AS-02's ? ... Mine are 15 mm both sides ... When AS-02's were fitted to genuine Thumpstars as stock , they used an axle the same as in that ebay ad (a parallel shaft with two split...
  19. Cactus Jack

    Ebay / Gumtree bargains !!!

    They're cheap die cast alloy coated with a fako silver coating to make them look like machined billet alloy ... The coating on the frame I bought bubbled up with white powdery corrosion showing thru in less than 1 year :D
  20. Cactus Jack

    Is this cylinder wall okay?

    If it's not blowing smoke as it revs higher or when backing off then the bore is OK ... Obviously a perfect bore with no scratches is the best way to go ... Loss of compression without any smoke issues indicates either loss of valve clearance or poor valve seal (IE valve face non concentric to...
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