It just hit me in one of those "wake up EUREKA" moments.. the thought woke me up at 420am
the prob with engine swaps in this vehicle is the mini's gearbox arrangement.. means that engines without it are bigger with box added.. i reference Jason's GT build probs.. extending the frame a foot on each side indeed.. rather too much work for me, that.. not saying it isnt a very cool swap, cos it is but i'm lazy AND tight.. lol
just had a look at those links brilliantly provided by IanK - SIRION ENGINE 50KG LIGHTER than 998cc mini.. and i bet the aygo/c1/107 version is yet lighter.. is a small engine... looks to me like it fits quite easy on the mini frame..
I've been reconsidering the wisdom of doing such a swap after further contemplation of the cost and hassle involved.. gonna have to do pros, cons
Pro: more mpg, less weight, more power, better weight distribution(?) Less maintenance? the Ka's engine has done nearly 100k miles and never once broken down, with nothing more than fluids, filters, plugs, and a battery and it is STILL sweet as a nut even though i've thrashed the hell out of it - modern engines seem to be really good for less maintenance (particularly chain drive ones), more reliability.. and if something does go wrong, its usually an easily changed sensor like a crank sensor or airflow meter.. Cheaper tax with a 1.0 3cyl.. sounds better (imo) than the frankly quite clattery A series (although that clatter does have its charms), more refined.. more reliable as it'd be a low mile engine.. easy to find replacement parts - these cars are v.popular. Easy to tune - just get the ecu flashed if it don't like a mod
Cons: Cost, work involved to do it... fact i've got electronics to diagnose if something does go wrong although i should be able to just run it to a toyota/peugeot/citroen garage and plug it into their diagnostic machine.. LPG conversion is £100 more on an EFI than a carb lump.. cost of some replacement parts like injectors..
The drawbacks are serious ones.. but so are the benefits.. hmm more thought needed.. have considered asking mini tuners to do the subframe mods, rather than toyota dudes..