I have a MK1 t5 with a 152 Polini, standard timing, PM exhaust & 4 plate Malossi standard 20T clutch. The problem is that it is slow off the mark. When I put it into 1st, it feels like it takes a split second before it takes off . All the other gears are fine. Until yesterday it had the standard 24/24G carb on it with a 118 m.j. I have tried 118-120 jets in summer & 122-125 ones in winter & get similar results. Yesterday I put a 26/26G carb with a 116 m.j. in it & it's a lot better but still not perfect. Do you guys think a 21T Cosa clutch will cure this or is it something else such as timing? Also, does anyone know how many turns the mixture screw should be on the new type Spaco/Dellorto carbs? It seems to be more than the 1 & a half turns as on the old carbs.
Look forward to hearing from someone.