W5x gearbox – Speedo drive

Description

W5x gearbox – Speedo drive

A new Speedo drive housing, gear and retaining tab to suit the W55-59 and certain other gearboxes. Please see the parts compatibility before purchase.

 

There are some other models of gearbox where one of these drives can be used to convert from an electronic speedo sensor to a traditional Toyota mechanical speedo drive. See further down for more information.

 

Parts supplied

– Speedo drive housing: Pre-fitted with the gear of choice.

– Retainer tab

– Retainer bolt

NOTE: For those who only wish to buy the gear / shaft combination or the housing alone then this is possible to do so for half of the advertised price. Use the comments box during the checkout to leave a note with the relevant request and then make the purchase with the full payment. When the order is packed and processed a partial refund will be manually made for the payment difference.

 

Part identification / Compatibility

– Housing outer diameter: 34mm

– Thread size for speedo cable coupling: M22 x 1.5mm (Common to all Toyota mechanical speedos)

– This drive unit housing is compatible with W55, 56, 57, 58 and 59 model gearboxes. It is not compatible with a W50 model (Steel case).

– There are different types of internal drive gears as used in the W5x series of gearboxes. To determine which is fitted remove the existing speedo drive unit and examine the two different numbers imprinted on the bottom face of the plastic gear. This will show how many teeth are on the current gear and also the amount of teeth on the internal gear. Using this some research can determine the compatible gears available. The drives offered here only suit 10 tooth internal driven gears and even then there are two different models of 10 tooth gear that are not cross compatible. WARNING: matching up gears that were not designed for each other will either cause it to not fit at all or fail prematurely.

– R151 / 154 Gearbox compatibility: See the next section for more information

– Although it’s not intended to be done, it is possible to carefully press the plastic driven gear off the internal shaft and back on to another. This is useful if there is an existing compatible gear from an electronic speed sensor that could be reused and then swapped across to one of the mechanical drives as offered here. The process would be required in some situations due to there being a difference in shaft length between the mechanical and electronic models and if none of the gear options offered here are compatible but the housing however is. E-mail us for more details on this process.

 

Compatibility with R15x gearboxes

The housing, retainer tab and bolt from these kits are all known to be compatible with the R15x (R151, R154, Etc…) gearboxes. So far here are the 3 different combinations that customers have successfully used. This is used as an example only and in no way proves compatibility with the same models. There are multiple variations and there is a high risk of it being incorrect if if it not investigated first. A customer is to purchase at their own risk of incompatibility.

– R151F:  Our 33T (33:10) drive kit  – NOTE: Our 32T (32:10) kit would have also been physically compatible.

– R151: 29T (29:11) – This customer purchased one of out kits above and then swapped the 29T plastic gear from his existing speed sensor shaft over to the manual speedo shaft from our kit.

– R154:Our 33T (33:10) drive kit  – NOTE: Our 32T (32:10) kit would have also been physically compatible.

 

Parts options

Below are the different options of gears as fitted to the speedo drive unit. They are listed in the estimated relation to the diff ratio as used on the vehicle, however this can only be used as a rough guide as it will change pending on the accuracy of the dash speedo unit, rolling tyre diameter and so on.

For any resulting inaccuracy or for those using a diff ratio not listed a speedo correction module is suggested. One method is to compare the measured speed from a GPS against the cars reading, work out the percentage of inaccuracy and order the correct ratio correction module to suit.

 

When using a 185 / 60 / 14″ tyre – rough guide only:

32 Teeth: Suits a 3.7:1 diff ratio

33 Teeth: Suits a 3.9:1 diff ratio

35 Teeth: Suits a 4.1:1 diff ratio – Suits some gearboxes only, see parts compatibility