The installation of a VISA engine is more complex. Due to the electronic ignition, a special ignition transmitter is needed in the housing. Adapters are available at some parts dealers. Furthermore, the ring wheel of the VISA flywheel does not fit on the 2CV starter. The Visa flywheel must also be switched off because otherwise it will not fit in the 2CV gearbox.
You get real power if you use a 4 cylinder boxer made of Ami Super or GS / GSA (between 54 and 65 hp). For this you need a chassis of an Ami Super (not Ami 8!) Including spring pots and shock absorbers, an engine made of Ami Super (1,015 ccm) or GS / GSA (1015-1,275 ccm), suitable gearbox, gearbox bell of the Ami Super (is shorter than that of the GS / GSA), drive shafts of the Ami Super (alternative adapter discs for 2CV drive shafts), disc brake front of the Ami Super or GS / GSA, exhaust Ami Super (totally different from 2CV or GS / GSA), stabilizer bars front and rear of the Ami Super, rear axle 2CV, front axle Ami Super or 2CV and various small parts. The 2CV bodywork needs to be adapted: spare wheel recess for the larger tank (40 instead of 25 liters), floor panels due to thicker spring pots, Extension of the bonnet and front fender by about 8-12 cm. That is really a lot of work and because of the tighter suspension and the extra weight of the engine on the front axle it is different than with a 2CV.
Catalyst and environmental badges
From the factory there was no catalyst, neither regulated nor unregulated. The last 2CV were "partially poor in pollutants", they managed to do this with a somewhat slimmer posture and completely without a cat.
Regulated catalysts for 2CV were sold in the early nineties and are still for sale (including Franzose, Meyer). 2CVs equipped with it are given the key number 77 and even a green environmental badge.
Brake
Drum brakes always in the back. Front from summer 1981 (model year 82) disc brake, formerly drum.
The main difference between drum and disc brakes: drum requires DOT brake fluid, disc LHM! These cannot be mixed with each other. Due to a wrong filling, the seals and the brake cylinder are damaged, resulting in a total brake failure! The complete braking system also needs to be overhauled afterwards (renewal of all seals and brake cylinders!)
Links
125R15s were always factory installed. These are now difficult to obtain. Alternatively, you can also control 135R15 or 135/70R15 (Smart). For both there is a release certificate from Citroën. If you like wider: up to 225 front and 245 rear are possible in combination with wider fenders and other rims.
125R15 is only available from Michelin, 135R15 also from other manufacturers. Original has always been Michelin, but these are only available through their classic car program and are quite expensive. There are alternatives to Toyo and Firestone. The discussion about which tyres are really better is always a matter of philosophy, conviction, originality and personal driving style.
