landy gearbox swap

[Deleted]

hi,
2.25 petrol engine from a series 3, is there a 2wd gearbox that fits? rover p5? p6?

cheers chris.

[composimmonite]

The FX4 used the 2.25 & 2.5 Land Rover engine. Not sure what manual gearbox they used - think most were auto's. The LDV also used the engine, alebit in 2.5 capacity (bellhousing the same between 2.25, 2.5 & TDi !) and they were definitely manual box.

[Deleted]

thanks, given me a few options to look at.

[sowen]

You'll be wanting a rwd LT77 or R380 gearbox with a Defender LT77 bellhousing



I don't think you need to remove any of the flywheel housing studs going 2.25 to Defender bellhousing, but going the other way, Defender to series gearbox, I think one stud needs removing? Spigot bearing is large on the Land Rover so make a smaller bush to press in for the rwd gearbox pinion. The R380 is slightly longer on the pinion so may need a spacer making between the bellhousing and gearbox so it doesn't bind in the crankshaft. Beware the values of gearlever remotes for LT77 and R380's have shot through the roof recently and can be worth more than the gearbox alone.

Alternatively, I think the 2.25 engines were fitted to the Rover P4 80, so the gearbox from one of those possibly would be right too?

[glenanderson]

As above, a Rover P4 80 gearbox, which is a 4-speed + overdrive, will bolt straight on. You'd have to use the series Land-Rover gear lever, or the rather bizarre P4 remote though.

The IOE four and six cylinder cars have the same 'box, but you'd need to swap the bellhousing for one from a four cylinder OHV motor to make it fit. Swapping is straightforward, but for one complication; early (pre 1960-ish) cars have smaller layshaft bearings than the later cars, so you need to find a suitable bellhousing. Early P4 'boxes are fairly plentiful, but early landy (Series 1/2) bell housings aren't. Later P4 'boxes are thinner on the ground, whilst later (series 2a/3) bell housings are easier to find.

I've got a six-cylinder P4 overdrive box in the lockup that I was going to modify to fit a four pot landy engine project, but have never got around to doing it. Not even as far as checking the size of the layshaft bearings. I could be tempted to part with it if that was the route you wanted to take.

For what it's worth, an LT77 or R380 five speeder would be a more robust and modern thing to live with, whereas the P4 box is a lighter and physically smaller unit. Horses for courses, depends what you want.

[Deleted]

cheers guys, that given me some ideas.