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Mini Dirt Bikes & Pit Bikes Forum

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  1. A

    Motovert RX Engine swap

    Hi everyone, I have a 2008 Motovert RX 125 with the original Jialing and it’s on it’s last legs soo it’s swap time.. I am looking at doing maybe the ZS 190 or something similar, but have a few questions before going ahead. What are the requirements to do the transplant, any cutting, fab work...
  2. L

    Need yx160cc engine

    Anyone know a store here in the us that sells new yx 160 engines. If it comes with the wiring harness even better. I search up online all I could find where from the uk, or they were out of stock.
  3. L

    Engines for pit bike (140cc+)

    Hey guys. Chain broke on my bike, then it broke the entire engine casing. It currently has a lifan 125cc, I was looking to installing a big bore kit. I thought well this is a good chance to just buy an engine, since repairing the damage plus the big bore kit would probably cost around the same...
  4. L

    reliable engine suggestions 500-600

    Hey guys I'm thinking about getting a new engine for my bike soon and I was wandering what engines are the most reliable but also with good power budget is 500 - 600
  5. Kprugger03

    Crf50 with lifan 125 questions

    I just bought a lifan 125cc motor got it all installed but am haveing a few prob 1 there is an extra blue wire coming from the cdi box I don't know what it goes too need help?? And 2 there are two pairs of wires each haveing a black with white strip and a green n both were do they go I think...
  6. S

    New mini build

    hey guy's i recently brought a pitpro crf style one with a 140cc engine but engine is missing heaps off it im thinking/planning a build it has the usd forks and swingarm with rear shock no wheels or bars im looking for any ideas as was thinking of doing a 10/10 or a 12/10 build with a semi auto...
  7. crazzy #1

    FS MSO 140SR

    ITEM AND CONDITION: Bike needs some tlc has ignition problems at high rpm and the rear brakes do not work PRICE, PAYMENT METHODS AND TERMS OF SALE: $600 firm REASON FOR SELLING: collects dust EXTRA INFO: has a 150cc engine in it, comes with a fair few spares including a basket case...
  8. jdr.223

    125cc BSE needs new motor. Bigger CC's. Suggestions!!

    Hey guys. Have a good BSE frame that used to house a lifan 125. Upgrading engine to something with more CC's. Have been looking into a YX140 Or Lifan 140. Also looking for an engine that has plenty of aftermarket performance gear available. Needs reliability but I understand as its modded...
  9. Alex RidesYamaha

    SSR valve engine problems

    Hey everyone, I have an SSR 110 pit bike. the engine has been giving me troubles. It wont start and i inspected everything on the outside of the bike to see if i didnt have to take the engine off. nothing was wrong on the outside so i took the engine off and took off the head. the rings and...
  10. J

    Need advise Engine oil coolant an fork oil

    Hi I just brought a yz426f 2000 or 01 an want to change all fluids wondering if castrol 4t 15-50 is good for my engine i ues that in mine an my sons pitser an is any coolant good enough to use an my fork seals are shot an im thinking of changing them myself if its not to hard an was look at some...
  11. samboy

    ktm 65 with 125 engine

    I am looking at a KTM 65 2000/2001 rebuilt with a 125 engine. New engine only has 2 hours of riding. This is for my 11 year old son who has done a small amount of riding on friends bikes. My question is do you think this bike would be too powerful for him? It is high enough but I've heard...
  12. kaevo

    Valve ? Starting problem ?

    I haven't ridden my pitbike 125cc lifan engine for over 2 .5 years or more but I have just turned it over and given it start here or there. I decided to start it today, I got it running but it didn't seem to hold revs very well even with the choke on. As well as this when the choke is off and...
  13. Rian

    2009 Motovert RX175 Registered - Brisbane

    ITEM: 2009 Motovert RX125 with a z175 engine swap. Has QLD registration until 18/11/2015. Will not come with RWC. CONDITION: In reasonable condition, gets regular maintenance and services. The z175 is a bit rattly but that just seems to be how they are, sounds the same as the day I bought it...
  14. AntNZ

    Help ! Pitsterpro LXR 17/14

    So i ordered a 2012 x4r couple of weeks ago and much to my surprise a lxr 14 turned up on my doorstep. Not complaining worth nearly 2k more. Thing is I dont know what year/model the bike is, I presume it is a 2012 but dont know. The only place on the bike that has lxr on it is on rear mudguard...
  15. china911

    lifan 125 1p54 pre installallation check

    l went over a brand new engine today before l install into frame . This is what l found - 500ml of oil in sump - bolts on valve covers over tightened ( one broke on removal ) - valve clearance inlet .001 - valve clearance exhaust .001 - cam inspection cover bolt (loose) - bolts on...
  16. S

    Crf50 carby and throttle cable question

    Hey guys I have a crf50 that has a 133cc engine from a motovert and the throttle doesn't spring back when released. I looked at where the throttle cable goes into the carby and the cable is bent up between the carby and bottom of fuel tank. Has anyone had this problem before and is there a...
  17. Emilio

    Pitbike won't start! - Fire!

    Hey everyone just brought a motovert frame with a lifan 140cc engine in it, bike was running fine was riding it for a little bit and let it idle then i revved it no bigger than half throttle and it stopped it was a kind of shattering sound but not 100% sure, have cleaned carboy multiple...
  18. D

    flames backfiring out of exhaust

    Hi guys, Im having an issue where im actually getting blue flames popping out my exhaust when i try rev my bike, the old exhaust had a hole in it and i replaced it with another exhaust that was of a 125cc engine "that i have on my bike now" only thing i can think of is when i was washing my...
  19. S

    WTB SEMI AUTO ENGINE

    Hey guys I am chasing a semi auto engine prefer Gold Coast but contact me if you got anything. Will be going in a crf50
  20. G

    Inlet stud spacing on a tb v2 head

    Looking at ordering a new manifold are the studs 45mm apart cheers I would just go look but I'm 900km away from engine working for 2 weeks
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