Quick Question: How to identify my w55/7/8

[Cuzzo]

How do i identify my gearbox if its a w55/7/8?

Its definetly alloy and doesnt have a steel sandwich plate.

I have search google and new&old toymods to get the ratios but how do i calculate them.

I know i have to put it in 5th and spin the input shaft and then do something with the output shaft.

The box is out of the car, so does it have anymarkings on it at all too?

Thanx guys and gals,
Adam

[ViPeR_NiPPleX]

put it in 5th, mark a starting point on both input and output shafts... then count the revolutions on the output per one input shaft revolution. I'm pretty sure the boxes are physically identical, with the only differences being the shifter housing.

[brett_celicacoupe]

ratios are here

http://www.answers.com/topic/toyota-w-transmission-1

[Cuzzo]

How do i accuratly measure the amount of revolution the output shaft has turned?
I marked them and turned the input shaft one revolution, and the output shaft only reaches about 80% of its full revolution.

So how do i measure exactly how far the output shaft has turned?

[brett_celicacoupe]

you have to rotate it a number of times
the w58 Fifth Gear= 0.783:1
the w57 Fifth Gear= 0.861:1


so if you rotate the output spline 10 times, the input spline should either rotate ~7.5 or ~8.5

if you cant identify by this amount of turns, turn the output 100 times and the input will be 78 or 86

[Cuzzo]

Thanx alot mate. Much easier to understand.!

Edit it looks like i have a w57.

[CrUZida]

W57 and W55 have very similar 5th gear ratios (0.85 vs 0.86)

Do the same test with 1st to confirm.

[Cuzzo]

thanx mate. I was wondering if it was a w55 but the cost i payed for it i sincerly hope its not.

[CrUZida]

A W55 is no different to a W57 or W58

Only the ratios diff, the strength/design is identical.