KTM 300 Piston choice

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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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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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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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Re: KTM 300 Piston choice

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

Whys that then?
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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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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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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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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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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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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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