Thread: LT77 into SIIA 88" ?

Originally Posted by Disco Steve

Sorry to hijack, but what boxes would bolt to a 2 1/4L?

Cheers Steve

Without adapters, only Series 2/2a/3 boxes originally fitted to four cylinder petrol and diesel engines engines, plus those fitted to the 200Tdi (which is where this post started).

The problem is not so much fitting to the engine - engine/gearbox adapters are mostly pretty simple - but fitting to a transfer case and then the overall positioning of the prop shafts, controls and changes to the floor etc. Several people in this forum have, I think, fitted completely foreign boxes, usually with another engine, although the problems are the same sort as fitting automatic gearboxes to Defenders for example, and there have been a few of these done.

John

Fair enough. So are there any other Rover boxes I should consider?

Is it possible to rebuild the stock Series box to hold a bit more power?

Nobody?

Originally Posted by Dauntless

Fair enough. So are there any other Rover boxes I should consider?

Is it possible to rebuild the stock Series box to hold a bit more power?

The only other Rover box you may consider is the late series 3 - the one with the lattice work down the casing. Still not a strong box but the layshaft is 1 piece and they don't throw the reverse idler out the side of the case.

It also doesn't have an overdrive 5th gear (or any 5th gear).

Diana

The Landrover Series box was, I believe, introduced in 1932 as a car gearbox. It first appeared in Landrovers in the 1948 Series 1 behind a 1.6 litre engine producing 52HP. With minor changes it continued in production until the introduction of the Series 3, when it was redesigned with synchromesh on all forward gears. Unfortunately, the need to fit more works in the same space meant this gearbox was weaker than its predecessor (and it can be suggested that some errors were made in the redesign). Minor changes followed and as Diana points out the, last of these was the strongest, although it is a moot point whether it reached the strength of the last of the older box (Series 2a suffix G on).

This box is adequate for any of the engines it was fitted to the Series Landrovers except the V8, but it is worth noting that Rover was not prepared to put it behind even the derated version of that fitted to the Stage 1.

The introduction of the 90/110 brought a five speed gearbox, and the new chassis design allowed more space to be allocated to the gearbox, easing the problem, helped by the extra four inch wheelbase on the 90 compared to the 88 (actually there is even more space than indicated by this, because the chassis is further forward on the wheels as well).

John