What gearboxes can be used on 4A

[LevinD1]

as the topic says.... what other gearboxes has anyone used other than the w5* series boxes, i've heard of RX7 boxes being used but not to sure...

[rthy]

I beleive some of the clubman guys use a sierra box

[Hen is a total nutcase]

Anything can be used. Just need an adaptor for the bellhousing, the right spigot bearing and maybe some playing with the clutch.

T50 = easy
W5* = "common" and parts are available for it
Anything else = custom, pain in the arse

Hen

[psychofox]

Yeah what Hen said!

if it's NA, bolt a T50 to it.
Else, W55/6/7/8 boxes have off the shelf Bellhousings (Dellows, niteparts, etc.) for a decent cost.

Some people have put the J160 - the Altezza 6-speed and it's variants (as found in the MX5, RX8, S15 200SX) behind 4AGEs, but it's not an easy path and quite extensive fabrication & engineering skills are required to do so. The results however are very positive.

Unless you are converting to 4WD or a rear mount transaxle a'la Formula Atlantic - most other boxes would be a waste of time money and effort, especially something like an RX7 box - which the rotary guys bin and put W58's behind their big HP 13Bs....

[dustyae86]

how much heavier is the w series boxes???

[slipps]

Are you having problems with your W58?
S15 6 speed to suit 4A on jap auctions, bloody expensive.

[psychofox]

T50 - 25.5Kg
W58 - 35Kg

[LevinD1]

JI60's from RX8's and such arent designed for huge torque loads either really.... i know, i rebuilt 1 for an RX8.... done like 50000km and syncro rings werent in good shape, and main bearings were noisy.

the reason i asked is cos i'm building a gze and wanted 2 find out if there were any cheaper alternatives to going to a supra box...

[AmyC]

From Medicine_man.

[klusio]

some of the 5spd K series box bolt up.

sorry for a piece of useless info lol