What the difference between LT77 and R380?
The R380 was introduced in 1994 with the suffix J which was a significant improvement on the LT 77 it supercedes> Differences included a steel oil pump (as opposed to the LT 77 fibre one), an additional 2 support bearing, used on the layshaft and the mainshaft, wider gears, bigger diameter synchro rings, synchromesh on …
What is an R380?
The R380 is a radically reworked LT77 (The 1940’s Jag gearbox remember) with improved main shaft bearing arrangements that provided an overall strengthening of the box. The R380 name stands for “Rated to 380 Nm input”. The V8 and Tdi R380 gearboxes have different bell housings and primary input shafts.
How does a Land Rover transfer box work?
The transfer box is the heart of the beam axle Land Rovers’ four-wheel drive system. It transfers the drive (from the gearbox) across and out at the front and rear of the transfer casing to drive the propshafts to the front and rear axles.
What is an LT77 gearbox?
The LT77 is an updated version of an old Jaguar gearbox that found its way into current model British cars manufactured by British Leyland. Yes the distance between the main and lay shafts is 77 mm. There were two versions of this gearbox. The earlier version is known as the short stick version.
What is diff lock on Land Rover?
The diff lock forces all wheels to spin at the same speed, regardless of traction. This is helpful if you encounter difficult terrain and one or more wheels leave the ground, as full power remains on the other wheels ensuring you are still moving in the direction of travel.
How much oil does a LT77 gearbox take?
The LT77 takes around 2.6 litres of oil, if you neglect to change or maintain your oil level in an old gearbox then you are just asking for something to go wrong.
When did Land Rover start using the R380 gearbox?
The R380 gearbox was used from 1994 to 2006 on Defenders and Discoverys . All of these boxes use a separate transfer case called the LT230 which is mounted directly onto the output flange of the gearbox. Reverse is to the right and down. This box was brought in as a replacement for the LT77S.
When did Land Rover stop using LT95 gearbox?
The LT95 gearbox was used from 1969 to 1983 on Range Rovers, all 101s, Stage Is and 90/110s with V8s in 1983/84 and 1985 with Isuzu diesels. All of these boxes use an integral transfer case.
How is the differential locked on a Land Rover?
The differential is locked via a vacuum actuator. Overdrives are available that mount off of the PTO flange and replace the transfer case input gear. Note that the gearbox and transfer case use separate sumps. See the transfer case section for information on transfer case ratios.
Is the LT230 a full time gear transfer case?
The LT230 is an all gear transfer case. It has been used on all Defenders, Discoverys, pre’ 1989 Range Rovers and 90/110s with LT77/LT77S/LT85/R380/ZF4HP22 gearboxes. The transfer case is a “full time” unit with a lockable, mechanical differential.