Technical Gearbox compatability

[rallycinq]

Good eve Uno fans.

I normally hang out over on the cento forum, but I have been contacted by an Uno driving friend with a problem, can you help.

He has an autotest special based on an Uno 45. The gearbox is 'broken with a capital F', and needs replacing.

It is the rod change box, if that makes a difference.

What boxes will fit his car, other than the obvious, Uno 45 one.

Thanks in advance

Cheers

D

 

[Louie Bee]

Depends if it’s the 903 OHV or the 999 FIRE.

 

[rallycinq]

I am sure its the FIRE thats in there, although its an early one with a dizzy I think.

If that doesn't make sense I'll check.

Cheers

D

 

[Bushboy]

they all had distributors only difference along the line were either carb or injection which wouldnt make a difference with the gearbox as they were the same engine.

The uno 45s came in 2 flavours.. the 903cc and the 999cc. the 999cc was a fire unit as was the 1108cc Uno 60 (ive heard the block isnt quite the same as the cinqi block). The boxes on the 45 999cc and the 1108 should be the same as they are both FIREs BUT I dont know if there is a differnce in the boxes between the pushrod ones and the hydraulic ones.

Ive owned both in the past and the engines (except for the fueling systems) were identical except for the gear box linkages. the blocks were the same. so the boxes should be too.

so just incase you dont understand my jibbering..

Look for an Uno 45 999cc box (pushrod or hydraulic shouldnt make a difference) or the Uno 60 1108cc box.

I think

 

[Luke]

From my understanding, any gearbox that was attached to a FIRE block will fit, including the 999cc, 1108cc and 1242cc. The hydralics can be converted to rods anyway too as far as im aware

But you're more likely to find another one from a 45 999cc than anywhere else

 

[Chas Uno]

Bushboy has pretty much covered most of the information you require regarding the 45 gearbox.

They all had a rod change, but I think only the mk2 had the internal rods (inside the car) whereas the mk1 had external rods (under the car). Mk2's also had a hydraulic clutch compared with the mk1's cable operated version.

I had a peek in the Haynes manual supplement, and it gives the following gearbox types:

903, 999, 1108, 1372cc i.e. - C.501.5.10
999 and 1108 (from 1992) - C.514
1372cc, Turbo i.e - C.510.5.17

I'm afraid it doesn't make a lot of sense to me!

What I can tell you is that the ohc non-FIRE engines (1372, 1301, 1299, 1116cc) had different bell housings as I tried to fit one to a FIRE engine a few years back. As so many FIRE engined Unos were made you would be better off finding a FIRE gearbox rather than swapping bell housings over. The reason being is that you have to dismantel part of the gearbox as it isn't a simple bolt on housing.

Perhaps if you could tell us what year your friends Uno is we could point you in a better direction?

Chas

 

[Luke]

They all had a rod change, but I think only the mk2 had the internal rods (inside the car) whereas the mk1 had external rods (under the car). Mk2's also had a hydraulic clutch compared with the mk1's cable operated version.

Early mk2 ones had external rod changes and cable operated clutches too

 

[alexGS]

I think the clutch (on Mk2 models) can be hydraulic or cable at random - whatever was going cheaply that week at the factory - and can be converted easily.

The gearchange - I believe that only the 1372cc and the Turbo 1372cc have the 'interior linkage' design C510 - where the rods from the gearlever run inside the car and change into two sideways link rods in the engine bay. I think that the smaller engines (999cc/1108cc) never had this design - but from early 1993 those engines also received a newer, Punto-style gearbox (the C514) which has cables as well as rods for the gearchange linkage.

In summary? The safest is to find an Uno with the same capacity of engine and get the gearbox from that.

-Alex

 

[Bushboy]

i had a 1994 999cc start (the redun) which defo didnt have rods. well, atleast not in the style of the earlier 999ccs. It was defo a hydralic clutch but dont remember rods? in any shape or form.. looked alot like the cinqi gearbox which is cable

 

[rallycinq]

Thank for al your help. I am sure its a Mk1. the one with the big headlamps, but it is an autotest special so it has no reg, no dash, One seat, hydraulic handbrake and is bright orange. Its been tangoed.

Cheers

D

 

[Chas Uno]

Thank for al your help. I am sure its a Mk1. the one with the big headlamps, but it is an autotest special so it has no reg, no dash, One seat, hydraulic handbrake and is bright orange. Its been tangoed.

Cheers

D

Sounds cool! Any pictures of it to share with the forum?

Always good to see a rally Uno!

Chas

 

[rallycinq]

No pics available at the mo, but I'll try and get some from the archives.

Cheers

D