Jump to content

Just pure curiosity


Recommended Posts

Theres a detailed spec on here somewhere (I'll search later) but the final gear on the 6 speed box is almost identical to that on the 5 speed box. You get no added cruising benefits just a shorter stack from 1st through to 5th.


Link to post
Share on other sites

http://en.m.wikipedia.org/wiki/Toyota_C_transmission#section_2

The C56 is the box fitted to a Glanza

0.815 5th gear ratio

4.312 Final drive ratio

The C60 is the 6 speed box

0.725 6th gear ratio

4.529 Final drive

Using this calculator:
http://www.teammfactory.com/gearcalculator.php?kmh=0&tirewidth=195&tireprofile=55&wheelsize=15&tirediameter1=23.44&maxrpm1=7500&finaldrive1=4.312&gearratio1=3.23&gearratio2=2.105&gearratio3=1.458&gearratio4=1.107&gearratio5=0.815&gearratio6=0&trannytype=&tirewidth2=195&tireprofile2=55&wheelsize2=15&tirediameter2=23.44&maxrpm2=7500&finaldrive2=4.529&gearratioa=3.23&gearratiob=2.105&gearratioc=1.458&gearratiod=1.107&gearratioe=0.725&gearratiof=0&trannytype=&tranny=Calculate+Transmission+1+%26+2

the 6th gear is slightly longer, only a smidgen.

Say your cruising at 80mph with the 5 speed box, on 15s in 5th with 195x55 tyres you will be cruising at around 3950RPM.

At 80mph with the 6 speed box again on 15s in 6th with 195x55 tyre you will be cruising at around 3650RPM.

Not a bad little difference. But then with the tiny 1st couple of gears in the 6 speed box is it going to drive you mental shifting all the time lol although 2nd gear launches would be reasonable :p

Link to post
Share on other sites

Don't quote me on this but I think they're restricted power wise to 250bhp area before they're at risk of spewing. I may well be wrong though. They're corola gearbox's

rubbish.

there is no hard evidence of this. capable of much more than that!

the 6 speed boxes r closer ratio than normal, not by much. also its never a bad thing havin a 6th gear, il be getin 1 for my conversion

Link to post
Share on other sites

rubbish.

there is no hard evidence of this. capable of much more than that!

the 6 speed boxes r closer ratio than normal, not by much. also its never a bad thing havin a 6th gear, il be getin 1 for my conversion

No hard evidence but big power starlets have a habit of stripping standard gears, the 6 speed box has thinner discs? (Terminology is shocking there but I think you know what I mean!)

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...