How would the 1600 75-86 hp 159A3000 engine go in the Uno 70S, and if it is a good change what is one worth.
Yep, good choice, and that's what 'jjhepburn' runs in his.
It's worth about the price of buying a Tipo off Trademe - that is, maybe $600 - look for a de-registered Tipo. Not much of the car will be useful (contrary to what some people would think, there's really nothing in common between the Tipo and the Uno trim- or body-wise) and you'll probably end up using lots of Uno parts (e.g. cam belt drive pulleys, cambox, distributor) as the pulleys, cooling and ignition systems of the Tipo 1.6 are totally different.
When I say different pulleys, I mean that the Tipo uses modern multigroove belts, so you'd have to fit the Tipo alternator, water pump, and belt idler. That in turn leads to some cooling system differences - the cylinder head has no heater output, so I think you would use the Tipo thermostat. The Tipo cambelt is an improved rounded-tooth design. Though the Tipo ignition is superior, you'd have to arrange a flywheel sensor to use the Tipo ignition, which raises questions over whether that Tipo flywheel works with an Uno gearbox (I don't think it does, so that might put the kybosh on that plan, unless you get a late Mk1 Turbo/Mk2 gearbox, which has the same clutch as the Tipo and therefore probably the same flywheel).
In James' case, the engine looks similar to a standard Uno unit now, with an old-style cambelt drive and Uno distributor, Uno cambox and cover, Uno cooling system, late Mk1-Turbo gearbox, driveshafts, and alternator bracket, but original Uno 70 brakes. There was no special fabrication required to make all this work - except for modifications to the alternator top bracket. At a casual glance, you'd never know the engine wasn't a standard Uno unit. Apparently the insurance company wasn't bothered either.
It's surprising just how much mix-and-match is possible, and you should expect to use some combination of Tipo and Uno parts to make it fit.
Of course, you could take on the challenge of fitting the Tipo motor/gearbox (different gearchange linkage) complete, but the Tipo carburettor is best forgotten anyway - it's not a nice unit, and tends to give a surging feeling while strangling the power to about 80bhp.
Basically, I'd say the Tipo engine is worthwhile as part of a package including an upgraded cam and twin carburettors (which will cost another $600 at least). That way you get probably close to 100bhp, but of course James hasn't bothered to dyno his car, so we'll never know
Knowing how it keeps up with my Turbo, it must have more power than a standard Tipo.
Otherwise it would seem hardly worth the bother to do all the mix-and-matching for an extra 10bhp or so
Another candidate for a similar engine is the '94-ish Punto 90, but again, not much of the engine will be useful due to the ancilliaries such as power steering. It seems a bit of a waste, unless the rest of the Punto is written off by some horrible smash. In which case, the multipoint fuel-injected engine left in standard form would make a nice powerplant for an Uno. They are relatively economical too (much better than an Uno 70).
-Alex