OzVMX Forum

Marque Remarks => CZ => Topic started by: shakeyCZ on September 18, 2010, 11:04:20 pm

Title: oil mix for cz 250
Post by: shakeyCZ on September 18, 2010, 11:04:20 pm

Hi all just a quick one what ratio is the 2 stroke mix 20:1 or 50:1 or somethink else?

Title: Re: oil mix for cz 250
Post by: HL400 on September 19, 2010, 05:55:36 pm

Hi there CZ love 20 to 1.  mineral base oil.  HL

Title: Re: oil mix for cz 250
Post by: NR555 on September 21, 2010, 09:53:31 am

Yep, richer side of life is the way to go.  We run leaded race fuel with good old Castrol A747 (synth/castor blend) @ 25:1.

I found I was glazing the bore really badly on full synth; tried a few different types with the same result.

Title: Re: oil mix for cz 250
Post by: LWC82PE on September 21, 2010, 12:03:02 pm

A lot of that era euro stuff runs 25 to 1 for road use. If your racing i would go to 20 to 1. Yes rings wont bed in with sythetic and you will get glazing. Some people say bikes smoke too much with 20 to 1 but when ever i run bikes with that ratio with just a basic 2T oil there seems to be stuff all smoke at all, even at idling/low revs.

Title: Re: oil mix for cz 250
Post by: shortshifter on September 21, 2010, 06:20:59 pm

I'm runing 30:1 full synth but haven't pulled a barrell of in some time so I don't know what the glazing situation is.bikes seem to run strong on this.