by kingcorolla » Thu Sep 23, 2004 1:18 am
im guessing, its coz if the car came out with a 1300 factory, other components were fitted, with the cc rating already finalised, eg suspension, brakes etc. then if u chuck a different size engine in, bigger or smaller, u could be changing the characteristics of these components. THATS were the cert'ing comes in.
*for instance* lets say u swap a 1 litre with a 2 litre... same engine, just different displacement.. u keep factory engine mounts. When u attach this bigger motor to these mounts, intended for a one litre, there is a risk of the mounts reliability.
reasons like this co-inside with safety regulations, and which is why certing is required. i think co-inside is the rite word..
this is WHY I THINK u need certification for smaller engine swaps.