za50 mods: 20 tooth and oil nub grinding

Hey kids,

How much work is it to grind down the za50 case to accommodate a 20 or 21 tooth front sprocket? I'm also planning to gring down the oil injection hub, any words of advice?

Thanks

Re: za50 mods: 20 tooth and oil nub grinding

buy one, try putting it on, and just grind away at it until it, with a chain on it, fits. if you have a dremel, or even better, a die grinder, just grind away at the material. simple as that.

i've been able to fit 20 tooth sprockets with chain onto e50s with no modifications. 21 is a stretch. dont know if theres more or less room on a za50 case.

Re: za50 mods: 20 tooth and oil nub grinding

Probably Fred /

20 tooth won't poke through on a za50. 21t I am working on now and I think it will go through the case and I'm going have to jb weld or think of something before I go further

Re: za50 mods: 20 tooth and oil nub grinding

Hey Rof,

Did you do any grinding on the case before installing the 20 tooth, or did you let the chain do the work?

Re: za50 mods: 20 tooth and oil nub grinding

Probably Fred /

Grind check grind check . Some chains are thinner but you still need to grind a lot

Re: za50 mods: 20 tooth and oil nub grinding

How about the oil injector nub, ever grind one off the case?

Re: za50 mods: 20 tooth and oil nub grinding

Probably Fred /

Ya but now I use a spacer for the intake. I have one for sale or you can buy a new intake and cut of the flange and use it for a spacer

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