80 series gearbox

[bigdee]

i have a 93 80 series 1hz and gearbox is about stuffed and i have a gearbox out of 95 4.5litre petrol 80 series which had a full time transfer , will it bolt in and r the ratios all the same and will my part time transfer fit onto it , any info would be good.

[udm]

the gearbox used with the 1hz 80s have shorter first and second gears (or whatever term is used)... dont know anything about the 4.5 clutches/flywheels/splines though.

the transfer will bolt straight up.

[The Fish]

Box behind a 1HZ uses a an 11" clutch and the 4.5 litre/1HDT uses a 12" clutch. They also have a different input shaft spline so clutches aren't inter-changable. Not sure about bell housing bolt pattern though.

The input shafts are inter-changablethough. With the help of Wally (80UTE) I fitted an input shaft from a buggered 4.5 litre box to my 1HZ box, and an overhaul kit, and had a 1HZ flywheel drilled to suit the 12" clutch. This resulted in an easy clutch upgrade providing you have got a 4.5 litre box input shaft lying around

What is wrong with your 1HZ box?

[bigdee]

ijust put in new safari tuff clutch my box has started rattling in nuetral and goes away when clutch pushed in which i think is input bearing how much does it generally cost to have new bearings and syncros put in

[The Fish]

I'd get it test driven by someone who knows what to listen for. Sure it's not your thrust bearing? Did you replace it when you fitted the new clutch? Why do you think you need new synchros?

[bigdee]

put new thrust bearing in when i put the clutch in and syncro gone in second gear might pull it out if it gets worse and have someone rebuild it as it has 430,000 klms onit it cant last forever thanks 4 ya help

[punk_180]

that rattle in neutral is normal. If you have a listen to most cars they do it. Especially heavy duty clutches. My old 200sx clutch sounded like someone was rattling bolts in the gearbox, but it was fine once engaged.

Even my 80 does it.

Ben

[hdj105]

that rattle in neutral is normal. If you have a listen to most cars they do it. Especially heavy duty clutches. My old 200sx clutch sounded like someone was rattling bolts in the gearbox, but it was fine once engaged.

Even my 80 does it.

Ben

Agreed, the damper in the new HD clutch plate will be quite robust, in comparison to the stuffed one in your old plate.