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Thread: rg powervalve problem

  1. #1
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    rg powervalve problem

    i bought another rg150 on thursday guy said powervalves are broken motors poked but runs .So i brought it home pulled it out of the van an started it up it was making a light rattly sound like ball bearings but seemd to rev ok so i took it for a ride up the road up hill incase it shat itself it didnt runs fine powerband seems to work much louder then my other rg very raspy maybe the mufflers been gutted?
    this arvo thought id better have a look at the power valves when i pulled the cover off there were four little bits of metal collars off the valves broken in half a little hooky thing and a spring. What i want to know is will it be ok like this or will it blow up?

  2. #2
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    50/50 It will, or it will not break.
    Common sence says fix it right, but who pays attention to that any more.

  3. #3
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    do 'em right, powervalves are something that should be done right

  4. #4
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    28th October 2007 - 16:20
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    Quote Originally Posted by tommorth View Post
    i bought another rg150 on thursday guy said powervalves are broken motors poked but runs .So i brought it home pulled it out of the van an started it up it was making a light rattly sound like ball bearings but seemd to rev ok so i took it for a ride up the road up hill incase it shat itself it didnt runs fine powerband seems to work much louder then my other rg very raspy maybe the mufflers been gutted?
    this arvo thought id better have a look at the power valves when i pulled the cover off there were four little bits of metal collars off the valves broken in half a little hooky thing and a spring. What i want to know is will it be ok like this or will it blow up?
    Was that the one on Trademe? what did you pay in the end?

  5. #5
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    yeah one off tardme bit more than 750 its had two top ends done in its life front tires a new bridgstone the rear is something scary like for fun made in china plastic , forkseals are poked probibly do them this arvo
    just had a look at an exploded diagram at colmans the bits that broke are the spacers might pull it all apart during the week pity as it runs fine starts first kick

  6. #6
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    got any pics off ur rg MDR2? took the other one from kerikeri to kaitaia and back on boxing day bloody good ride the mangamuka gorge is awsome ,been resealed since i last went through
    Last edited by tommorth; 28th December 2007 at 16:01. Reason: cant bloody spell

  7. #7
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    I've just had the same thing 5,000km's into a new set of OEM p/valves. Bit of a bastard, I think older mileage bikes allow the valves to rattle in the ports and break the spacers/crowns.

    You need to replace them else they allow more play for the powervalves, and sooner or later the top of that will break off like my old ones and then it just needs to rotate and you've got a powervalve blade having fisticuffs with your piston, also like my old set.


    I'm going to see if Oyster has decided on making replacement sets of valves or not, he was taking a look into doing it for a while.

  8. #8
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    good to know did you just replace the spacers or the whole pv

  9. #9
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    in the first case, the whole lot was gone so the whole thing needed doing. pull the valves out and check the blades for signs of damage or wear.

    This time I don't think they're damaged yet, not sure though.

  10. #10
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    Quote Originally Posted by tommorth View Post
    got any pics off ur rg MDR2? took the other one from kerikeri to kaitaia and back on boxing day bloody good ride the mangamuka gorge is awsome ,been resealed since i last went through
    not had a chance to take photos yet.

    I brought mine the weekend before xmas, got it back to auckland and rode it 2 km down the road to home from a mates place, parked it up, managed to squeeze a ride in down the road to the shops (long enough to realise it needs a tune up) then with work being busy never had another chance, im now in dunedin and unable to ride it, it's killing me. have hardly had a chance to look at it. If you don't mind, could i swing by your place and measure up the stinger on your rg? i need to make one and would like to get it right.

    Im envious of everyone who gets to ride their bikes at the moment.

  11. #11
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    no worrys mate let me know when ur back in town i live near the start of huia rd

    pulld pv out today much easyer to getat with the frontend off they the centre part to one of them is a bit sad the hole the bolt goes through is now oval it all a bit slopy but the other one is fine onnly one of the bolts that hold them in was tight were allen heads so someones replaced bits before previous owner told me its blown the top end twice
    any one got some spare rg powervalve bits lying around???

  12. #12
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    4th May 2006 - 21:21
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    Has anyone found a decent supplier for Rg150 powervalves? They're just little bits of metal but they cost a fortune for some reason.
    In space, no one can smell your fart.

  13. #13
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    You would think Suzuki NZ would have them in stock with how regularly they seem to fault. Are they an expensive item?

    I'm dropping my bike off for a service in the new year, I really hope I don't need this doing :S

  14. #14
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    Quote Originally Posted by MDR2 View Post
    You would think Suzuki NZ would have them in stock with how regularly they seem to fault. Are they an expensive item?

    I'm dropping my bike off for a service in the new year, I really hope I don't need this doing :S
    Are they ever mate, paid $650-700 for a new set of OEM ones from suzuki dealer in chch back in early 2006. The middle on one of those was shagged not long after on mine too and has been replaced with a 2nd hand one to complete the blades. My RG also has had blown top end at least twice and has a 0.5 overbore piston in.


    If there is a big enough market I think Oyster might consider making sets, he has the skills and made a test set earlier this year which would be quite a bit cheaper than $700 i'd think. Not sure if they worked or if he makes them still though.

  15. #15
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    I would be into that!
    I have a kaboomerd rg motor lying arond that I was keen on giving the full treatment to. and its probably only a matter of time untill the moving one needs work...
    Heinz Varieties

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