OzVMX Forum

Marque Remarks => CZ => Topic started by: 2minutetim on July 05, 2022, 11:15:20 PM

Title: CZ numbers???
Post by: 2minutetim on July 05, 2022, 11:15:20 PM

Hi all,

I've just picked up a 1975 CZ250 Falta as a father and son project for me and my aging dad to spend some time on.
I hoping someone can assist with what model number I should be using when chasing parts.
Is it a 513? is it a 980?  These are just some of the numbers i see listed against CZ250's.
Is there some way to tell what model mine is?

Thanks
Tim

Title: Re: CZ numbers???
Post by: tony27 on July 06, 2022, 01:05:34 PM

Falta model 250s are 980 series, the 513 is the later centreport motor that doesn't have a rear transfer port.
Luckily most parts are the same, pistons & rod kits are the common to all but the twinports. Main difference with the Falta & 513 model 250s to earlier 980 models is the internal rotor ignition which use a different sized taper on the crank. Pre73 models also use a taperlock in the primary drive gear instead of a keyway
Clutch parts are common with all 980,981 & 984 motors, the 513 uses a different dry clutch with a large number of small fingers, it can be fitted but needs the primary drive gear & clutch gear as the basket screws to the gear rather than using the special nut to retain it
Parts are extremely easy to get, CRHighperformance is the nearest place in the US & is great to deal with, in the UK CZStuff is good, I also use Etovar.cz for a lot of the smaller parts. There is a company in Poland I've dealt with a few times that has multiple eBay accounts

Title: Re: CZ numbers???
Post by: 2minutetim on July 06, 2022, 04:42:51 PM

Thanks Tony, really appreciate your assistance

I'm chasing a carb to airbox boot at the moment.
I was chasing brake shoes but ended up getting my old ones rebonded

Again thanks, have a great day