Technical Uno Turbo Retrofit

[Slinkylinks]

I've been looking around for a bit to see if anyone has done anything similar to what I'm planning. I can't see it so I'm going to ask.

I've got an uno 70 SX IE. In the shed I have an UT engine + turbo plus spare everything, I also have a 1500cc x1/9 engine thats going to stay sitting where it is for a while...

Question #1
What I'm thinking/want to know, is if the 70 engine is the same as the UT one just minus all the turbo bits. read: can I just bolt on the turbo/manifolds etc to the 70SX engine, use the stock computer etc. this would be really handy if I could.

Question #2
Does the brake master cylinder need to be moved to accommodate all this? what other changes do I need to make?

Question #3 (and final for tonight)
Is the mark2 (its a mark2 by the way) gearbox the same as the UT/Tipo one? I seem to remember that last time I drove one it felt like one.



hope someone is able to help with this one, Thanks!


Matt

 

[oldskoolmk1unoturbo]

the 70 engine is not the same as the uno turbo engine, you cant just bolt the turbo onto it.

 

[Louie Bee]

Pistons are different and if you have the 1.3 nat asp the bore and stroke are also different. , There is no piston cooling jets in the nat asp engine, so 1. = No

Yer the master cylinder needs to be on the right. You need turbo brakes and suspension to handle the extra weight / speed. Anti role bar and a load of other bits and bobs.

Not sure about the gearbox, but the driveshafts are different. The O/S is split in two, half is held by a bracket to the rear of the block, which also mounts the alternator. Think the ratios may well be different on the box.

 

[Slinkylinks]

cool, that all makes sense. But am I going to be able to use the
computer and ie system from the 70ie on the turbo engine?
I'm a total novice when it comes to injection.

my turbo engine is minus the computer, so I was hoping to be able to pinch all the IE parts from the 70ie. Is this going to be relitively straightforward or is it more than just swapping parts over?

Thanks team!

 

[Chas Uno]

cool, that all makes sense. But am I going to be able to use the
computer and ie system from the 70ie on the turbo engine?
I'm a total novice when it comes to injection.

In theory yes, but performance will be way down as the turbo engine is much lower compression compared with the 70 engine. Without the turbocharger the turbo engine won't reach its full power potential. Also the 70SX i.e. (in the UK at least) uses SPi whereas the turbo uses MPi.

The 1.3 turbo engine is based on the 1.3 70 lump but there are many changes made for the turbo installation.

Even so, it sounds like you'll have a nice project on your hands so good luck with it

 

[YTUNO]

cool, that all makes sense. But am I going to be able to use the
computer and ie system from the 70ie on the turbo engine?
I'm a total novice when it comes to injection.

my turbo engine is minus the computer, so I was hoping to be able to pinch all the IE parts from the 70ie. Is this going to be relitively straightforward or is it more than just swapping parts over?

Thanks team!

I'm pretty sure I've got a spare Turbo computer. I'll have to have a dig around in the garage. If you do go ahead with the swap let me know and I'll send it your way

 

[jjhepburn]

I recon go with the 1500 X1/9 motor... get a bit of a grind done to the cam shaft put a better carb (or two carbs) and tweak the exhaust and you'll have a great Uno...

As for the master cylinder you could try and find a master cylinder from a Punto. They have a shorter cylinder so it doesnt hit anything. You have to modify the brake pedal a bit (you need to drill a hole through it slightly above the pin that attaches to the uno cylinder then use a bolt to attach to the punto cylinder. A bit of pipe bending is also needed.

I know this mod works because its in my 1600 Uno and Blair Wald has done it to his UT

I've attached some photos of the Punto cylinder installed in my car. Its a worthwhile mod because it removed the complexity and weight of the UT setup.

 

[Slinkylinks]

Thanks for all the replies,

I collected the Black uno 70sxie tonight, it drives really well given it has been sitting for 3 years (took half an hour to get it running) what I noticed is that the brake cylinder is already in the correct position in this car! and not only that, it seems to have the tipo/turbo gearbox.

The mounting etc is exactly the same as the turbo engine I've got. so now the only difference is that the turbo is supposeto be MPi, but (there it is...) I've got a starion SPi injector and piping etc anyway so as long as I can impedence match the injectors then that should work as well (or does the SPi from the sxie not deal with pressure?)

as it stands (tonight at least, will probably change as I get more information)
what I would like to do, is with the 1990 70sxie put in the UT engine + turbo etc, with starion injector and use the original gearbox & injection computer from the 70sxie

does this sound like a possibility?

YTUNO: how much would you be after for that computer? I've got the loom I think...

I think I'll do the turbo thing rather than beef up the 1500 for now.


CHeers guys!

 

[sumouno]

i have a mk1 computer if they can be used on the mk 2 engine

 

[YTUNO]

YTUNO: how much would you be after for that computer? I've got the loom I think...

Ooooh, I think I could let it go for $0

 

[Chas Uno]

what I would like to do, is with the 1990 70sxie put in the UT engine + turbo etc, with starion injector and use the original gearbox & injection computer from the 70sxie

does this sound like a possibility?

The 70 SXie gearbox might be up for it, though the ratios will be different to the genuine turbo box.

I'm not convinced about using the 70SXie ECU with a Uno turbo engine. The turbo also uses specific air flow meters and other such sensors that the 70SXie does not have (possibly even a knock sensor - crucial on a turbo car). Plus you mention using the Starion injector (as in singular?). The Uno turbo uses multi-point injection, not single point. Running a turbo engine with SPi you could risk running the engine lean with expensive consequences.

Surely your best bet is to find the correct Uno turbo parts and use those to run the engine as Fiat intended? Otherwise I would suspect that you would be running into no ends of problems and will just make more work for yourself.

However, I DO like the idea of a 70SXie turbo conversion! I've spoken with Jai a number of times about doing something like that with my mk1 70SX to make a luxury 'sleeper'. A five door Uno with UT performance? Now that would upset the Corsa/ Saxo brigade :devil:

 

[YTUNO]

I finally got to the box at the back of the garage and found the ECUs. I have two Turbo ECUs, but they are both MK1s. If you think that they will work you are welcome to give them a try.

 

[Slinkylinks]

I'd be keen as to give one a blast dude. Flick me an email on [email protected] and I'll fire you my address! Cheers!

 

[SteveNZ]

So are you selling the turbo engine on Trademe now?

Couple of things.

Turbo engine needs the turbo ecu and ignition system. You cant use the i.e. system and defiantly not with the starion SPI.

Basically the whole 70sxi.e. drivetrain is useless. Replace it all with turbo items.