13-01-2015, 12:39 PM
Just keep a matched pair of cogs from the same box and it'll be fine, maybe a small amount out if the tyre sizes are different. Ideally use the ones from the original gearbox if you know they're correct.
Problems come if you start mixing cogs from different boxes, as there's a few different ones out there distinguished by different colours. 205 GTi ones are red small and cream larger cogs for example. Start muddling the cogs and the speedo drive will be rotating at the wrong rate for a given road speed, thus throwing out the speedo.
The cog just pulls off the bottom of the speedo drive / VSS so easy to swap over if you're swapping speedo drives over.
Problems come if you start mixing cogs from different boxes, as there's a few different ones out there distinguished by different colours. 205 GTi ones are red small and cream larger cogs for example. Start muddling the cogs and the speedo drive will be rotating at the wrong rate for a given road speed, thus throwing out the speedo.
The cog just pulls off the bottom of the speedo drive / VSS so easy to swap over if you're swapping speedo drives over.
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate