R380 short bellhousing ashcroft rebuild

1.727,00 inc. VAT

SKU: R380SB Category:

Description

Description
Although this is still an R380 I thought it warranted it’s own separate section.

The “Stumpy” or short bellhousing R380 was made by Land Rover as a direct replacement for the 4 Cyl LT77. The bellhousing is 30mm shorter than the LT77 one as the 5th speed housing on the R380 is 30mm longer. This will not fit the V8 engine.

They can be fitted to the 2.5 N/A, 2.5 petrol and the 200 TDI engines, anywhere the 4 Cyl LT77 is fitted.

This type of R 380 was made with two ratio options, the type 50A and the 44A, the 50A has the lower gearing like the 50A LT77 and the 44A has the higher gearing like the type 56A 200 Tdi Defender LT77. Also both ratio options were made in suffix J, K and L format.

We are only able to supply the parts for the type 44A suffix J and the 44A suffix L, the 44A suffix L being the most desirable as this has the higher gearing and the strength advantages of the later suffix L design. Please see the ratio calculator to see the two sets of ratios.

You can also spec the heavy duty rear support bearings if required and /or the higher 5th gear ratio if required.

Heavy Duty Rear Support Bearings

One of the common failure modes of the R380 is premature wear of one or both of the rear support bearings in the rear 5th speed aluminium housing, this starts as a whirring in all gears but not so bad in 4th, then as the bearings wear it allows the 5th gear on the layshaft and 5th gear on the mainshaft to come a little out of mesh, then 5th also gets noisy and often results in the teeth coming of one or both of the 5th gears, after much design work we are now able to offer to upgrade these two bearings.

The Layshaft rear support bearing is FTC2385, this is made by RHP and has a dynamic load rating of 27Kn, we replace this with a larger bearing of equivalent quality which has a dynamic load rating of 35.5Kn, this is a 31% increase. See below a comparison photo of stock vs our HD one.

The Mainshaft rear support bearing is FTC3371, this is made by RHP and has a dynamic load rating of 27.4Kn, we replace this with a larger bearing of equivalent quality which has a dynamic load rating of 44Kn, this is a 60% increase. See below a comparison photo of stock vs our HD one.

This upgrade would be advised for any hard working R380 such as heavy/tuned TD5 vehicles, ie overlanders or tow vehicles,

R380 5th gear ratio

All TDi and TD5 R380 5th gear ratios are 0.77, the V8 ratio is 0.732 which is approx 5% higher, we are able to fit these higher ratio 5th gears to the TDi and TD5 boxes for an additional charge if required. If you want to run these numbers on the ratio calculator, please select the type 69A R 380 option but this is for the 5th gear ratios only, all other gears will remain the same. An example of when this option would be good is if you have a stock TD5 Defender which does some heavy towing, you might not want the 1.2 ratio gears in the transfer case as this would raise 1st too much and it may struggle to pull away but you want 5th a bit higher, or you have a tuned TD5 Disco / Defender and feel it can pull higher gearing but the 1.003 ratio is too high.

Note you can’t use the LT77 diff lock linkage and will need the R380 type which we can supply good used.

The Land Rover part number of the 44A suffix L is TRC103140. The Land Rover part number of the 50A suffix L is TRC103150

We are able to either supply a kit of parts to allow you to convert your R380 to this spec or we can supply a complete rebuilt unit to this spec.

The conversion parts are :

Bellhousing (FTC4018)

Pinion

Front Housing

Clutch fork pivot(FTC4173&FTC4174) inc screws

Clutch fork (FTC2957HD)

Clutch fork thrust pads, pair (FRC5255)

Clutch release bearing (UTJ100210)

Clutch release bearing clip (FRC3416)

to buy these parts individually see here

These are obviously more expensive than a replacement LT77 but are both far stronger and have the facility to add an oil cooler if required, worth the extra money if you are keeping the Defender or if it’s working hard like an overlander etc.

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