South Wales Trail Riders

    KTM 300 Piston choice

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    jams

    Posts : 446
    Join date : 2014-02-16

    KTM 300 Piston choice

    Post by jams on Sat May 31, 2014 9:28 pm

    2008 KTM 300 piston seized today so need some advice on piston choice. So far got Wiseco at £180, Wossner at £135 and Vertex at £115. Any thoughts on which/alternative? Also Wiseco and Woosner are twin ring, vertex is single, much difference?

    Cheers
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    dai 530

    Posts : 587
    Join date : 2012-07-01

    Re: KTM 300 Piston choice

    Post by dai 530 on Sat May 31, 2014 9:57 pm

    I had mine from et james
    ktm piston kit with all the gaskets and o rings and copper washers and small end £107
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    phil990

    Posts : 2260
    Join date : 2010-02-15
    Location : Bridgendish. Welsh Riviera...

    Re: KTM 300 Piston choice

    Post by phil990 on Sun Jun 01, 2014 6:42 am

    Twin ring for enduro engines.

    Single ring for MX.
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    steve

    Posts : 4245
    Join date : 2010-01-26

    Re: KTM 300 Piston choice

    Post by steve on Sun Jun 01, 2014 8:44 am

    Whys that then?
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    phil990

    Posts : 2260
    Join date : 2010-02-15
    Location : Bridgendish. Welsh Riviera...

    Re: KTM 300 Piston choice

    Post by phil990 on Sun Jun 01, 2014 2:33 pm

    Less stiction I think they call it for SX . Two rings helps to keep the compression to last longer I believe... :
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    sparks

    Posts : 758
    Join date : 2012-10-30
    Location : Arkham Asylum

    Re: KTM 300 Piston choice

    Post by sparks on Sun Jun 01, 2014 6:51 pm

    dai 530 wrote:I had mine from et james
    ktm piston kit with all the gaskets and o rings and copper washers and small end £107
    yeah me to. top end rebuild kit  Very Happy 
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    jams

    Posts : 446
    Join date : 2014-02-16

    Re: KTM 300 Piston choice

    Post by jams on Mon Jun 02, 2014 9:23 pm

    Piston in the post from et james, cheers for that Dai. Any tips on running it in?
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    dai 530

    Posts : 587
    Join date : 2012-07-01

    Re: KTM 300 Piston choice

    Post by dai 530 on Mon Jun 02, 2014 9:52 pm

    I just start mine and leave it run for 5mins then leave it cool down do the same again then ride it for about 2 hrs not reving it to hard and its ready for a good seeing too
    some say to use cheep 2 stroke oil to run it in not to glase the bore
    i have used a horning tool to deglaze the bore and it gives a even finish
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    jams

    Posts : 446
    Join date : 2014-02-16

    Re: KTM 300 Piston choice

    Post by jams on Wed Jun 04, 2014 6:23 pm

    The 300 lives, has an odd clunking noise, could be piston slap, could be paranoia! Will see when i run it in.
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    steve

    Posts : 4245
    Join date : 2010-01-26

    Re: KTM 300 Piston choice

    Post by steve on Wed Jun 04, 2014 11:46 pm

    Mite be wise to take the TM the weekend.

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