Tech:Engine/K Series/Gearboxes

There are a few options for adapting a gearbox to a K series motor, So here is a guide is to what is out there..

K40/K50 (Toyota Factory 4/5 Speed manual)

The K40 or K50 gearbox was factory fitted behind 3K/4K/5K motors. They are the most common gearbox in early KE Corollas. TRD gearsets were available for K50 gearboxes.

T40/T50 (Toyota Factory 4/5 Speed Manual)

The T50 gearbox is a lot stronger than the K50 gearbox and is a split casing design. You can still purchase close ratio gearsets for the T50 gearboxes through TRD. The T40 or T50 gearbox can be adapted to a K series motor with a K-T Bellhousing,

The K-T Bellhousing came in a few different forms...

1. Cable clutch K-T Bellhousing, Extremely rare, Easier to install in earlier KE Corollas as you don't need to install a hydraulic clutch (Pictures courtesy of Xany and tojo2).

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2. Hydraulic clutch K-T Bellhousing, Rare, Requires hydraulic clutch setup to be installed. (Off KT174 5K T40/Carina)

3. TRD Upright bellhousing, Like the Holy Grail if you can find one, Cable clutch, Designed to allow for the positioning of an upright K motor. If you have one of these please send me some pictures so I can upload them here, Also your address would be great so I can come and steal it :)

Toyota W50 (Toyota Factory 5 Speed Manual)

The W5x (W50/W55) gearbox will fit if you use a K-W bellhousing from a KR42 Townace.

See also:

• http://www.rollaclub.com/board/index.php?showtopic=12935 (How To Fit A W50 To A K Series Motor)

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Article by Medicine_Man / Taz_Rx / Xany / tojo2

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