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Thread: VJ22 500cc?

  1. #1
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    VJ22 500cc?

    Probably a stupid question, please be gentle!

    Could a Suzi RGV/Aprilia RS250 VJ22 vtwin 2stroke 250cc engine be modified into a 500cc engine using a pair of RM250 cylinders and pistons? Assuming the cylinders could possible bolt up to the block (with/without modification) or humour me, custom cylinders...?
    RMZ#88

  2. #2
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    Anything is possible. Would need substantial modification to the bottom end. Stroke is not long enough. Bore is 10mm greater, Stroke is 72.0mm compared to 56.0mm

    How much money have you got??

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    Lots of people have shoehorned RG500 motors into VJ22 frames, RG150 barrels fit RG500 motors, why not make yourself a RGV600?
    Quote Originally Posted by Dean View Post
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    .....if I find this as a signature Ill hunt you down, serious, capice?

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    to hell with all that...just get two RG 500 engines,join them together and make a V8 1000cc two stroke.

    oh,and lob it into a ducati 1098R rolling chassis.

    that should shake the boys up a bit
    "more than two strokes is masturbation"
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  5. #5
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    Quote Originally Posted by HDTboy View Post
    Lots of people have shoehorned RG500 motors into VJ22 frames, RG150 barrels fit RG500 motors, why not make yourself a RGV600?
    You'd have to leave the V out as the 500 aint a V.

  6. #6
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    How about an RZV500 in a 2007 R6 frame with an R1 tail... two down low and two under the tail. Saw some pics of a guy in europe that was doing it... full ohlins/brembos etc as you'd expect too!
    KiwiBitcher
    where opinion holds more weight than fact.

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  7. #7
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    Keep it rolling boys, sarcasim, reality checks, advice etc are all welcome

    Where im going with this...I have an Prilly RS with a dud VJ22, I would like to retain this engine because I already own it and it bolts straight in. The bores are knackered and while I could have them replated...the $$$ involved are crazy for a power level that I was getting sick of so I thought maybe repair the engine and get some decent power out of it at the same time. And the added bonus of a custom bike just for shits & giggles.

    Final question...
    If I could adapt the RM cylinder to fit my block, it would be a case of sourcing (or custom making) the correct length rod that matches up to my VJ crank and the RM piston. ???

    Cheers
    RMZ#88

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  9. #9
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    Quote Originally Posted by koba View Post
    What he said... RS250 with a dead motor, there simply is no better option!

    If you ain't got the stones for such a job, let me know how much you want for what's left of your RS250

    Conversion will cost you a little over $13k.

  10. #10
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    Quote Originally Posted by R6_kid View Post
    How about an RZV500 in a 2007 R6 frame with an R1 tail... two down low and two under the tail. Saw some pics of a guy in europe that was doing it... full ohlins/brembos etc as you'd expect too!
    I think that was in Performance Bikes, too... I love stuff like that.
    I thought elections were decided by angry posts on social media. - F5 Dave

  11. #11
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    Quote Originally Posted by Atomic View Post
    Keep it rolling boys, sarcasim, reality checks, advice etc are all welcome

    Where im going with this...I have an Prilly RS with a dud VJ22, I would like to retain this engine because I already own it and it bolts straight in. The bores are knackered and while I could have them replated...the $$$ involved are crazy for a power level that I was getting sick of so I thought maybe repair the engine and get some decent power out of it at the same time. And the added bonus of a custom bike just for shits & giggles.

    Final question...
    If I could adapt the RM cylinder to fit my block, it would be a case of sourcing (or custom making) the correct length rod that matches up to my VJ crank and the RM piston. ???

    Cheers
    Havent you still got a big hole where the other cylinder used to bolt up?

    why not do the tried and tested thing, with a 300cc conversion kit from Stan Stephens. www.stanstephens.com


    check some of the dyno graphs. 74 hp in road trim!!!
    I thought elections were decided by angry posts on social media. - F5 Dave

  12. #12
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    I know a really good R6 you can have for 13K!!!
    TMF

  13. #13
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    Or you could build a triple, this will eventually be close to a 500cc.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  14. #14
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    Quote Originally Posted by HenryDorsetCase View Post
    Havent you still got a big hole where the other cylinder used to bolt up?

    why not do the tried and tested thing, with a 300cc conversion kit from Stan Stephens. www.stanstephens.com

    check some of the dyno graphs. 74 hp in road trim!!!
    Two old cylinders, two new cylinders...500cc.
    Yeah Stan Stephens conversion sounds like a better option than the Cheetah kit...$13k is getting a little silly.


    Quote Originally Posted by westie View Post
    I know a really good R6 you can have for 13K!!!
    Thanks Finn, ill straight swap ya?!
    RMZ#88

  15. #15
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    Quote Originally Posted by westie View Post
    I know a really good R6 you can have for 13K!!!
    Hmmmm boring common as you like 600cc IL4 4 stroke or 500cc twin two stroke... bit of a no brainer really

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