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Kawasaki MX & Off-Road Dirt Bikes
Top end build FAIL help
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[QUOTE="EncyclopediaRonnie, post: 1410761, member: 121020"] [b]Top end build FAIL help now with pics pg2[/b] hey guys so built my 1993 kx 125 top end, la sleeve pro x piston moose racing gasket kit. did a dry comp test cam,e up 125ish then ran it in and rode it maybe 5 hrs max comp tested again and was around 100 so pulled motor down to find the psiton had been picking up on the bore, ive now discovered i didnt tell my machinest to chamfer the ports :bang: 1) would not chamfering the ports be the cause of this, 2)should i give it a light hone measure up put a new piston ring etc and go nuts, or go a 0.020 oversize. IF i go oversize do i use standard head gasket still. pretty sure i would but cant hurt asking 3) there is a nos piston i can buy it has no rings or pin, circlips, ive got the ring can i run the pin and cir clips that are 5 hrs max old from my prox piston thats rooted? no damage has ocured to the pin. 4) ive got all the tools to chamfer the ports which makes it worse so, when chamfering its onli a slight say 1 mm 45 degree chamfer around the ports. corect? im asuming it needs to be done around the entire port or just the upper and lower edges not so much the sides? cheers for the help guys. [/QUOTE]
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Kawasaki MX & Off-Road Dirt Bikes
Top end build FAIL help
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