Let me show you a way to fix a bad point of our transaxles, the gear box !
Most of time, they are slow and 2nd or/and 3rd ratio are not easy to use.
One my trackdays'car I decides to change things
![Razz :P](./images/smilies/icon_razz.gif)
I had 3 "targets", first of course rebuilding and fixing all the box, second a 45% "sleeper" and third a shorter ratio. I had 10 X43 (4,3) and I wanted a 9 X 41 (4,55).
I found the 9 X 41 in a Giuletta 1600's box (from eighties)
What a mess !!!
![Image](http://i44.servimg.com/u/f44/16/54/85/98/image148.jpg)
Light is right said Colin Chapman and in our case it's REALLY right, in gear box too much weight mean a slow box, hard work .
Here are gear ratio number 1 2 and 3, before and after.
![Image](http://s1.e-monsite.com/2009/09/21/08/59816531pignons-jpg.jpg)
We also changed rear ration,and 4 and 5 th with ones lighter.
Cleaning and after we "glassblasted" (I hope it's the right word)
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-017.jpg)
After glassblast :
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-106.jpg)
Please don't make a mistake sir !
![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-028.jpg)
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-029.jpg)
For example the 1rst gear ratio is about 300 gram lighter than genuine one.
Weight is the public enemy !
Here is the rear ratio
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-031.jpg)
Guess which one is the lighter one ?!
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-032.jpg)
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-033.jpg)
The deal is to machine the gears without hurting the harder "skin" that need specifics machines and how to use it !
![Smile :)](./images/smilies/icon_smile.gif)
The link og the garage who propose this work :
http://autopassion63.e-monsite.com/page ... legee.html
Note you can mix gear from alfetta and 75 and make a sort of "close ratio"
Alfetta have short gear box ratio with a long final ratio , 75 have long gear ratio with shorter final ratio.
So you can take 1st gear from 75, then 2,3,4 from Alfetta...
It's enough with wrong-right CLOSE ration let's CLOSE the gear box !
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-107.jpg)
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-108.jpg)
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-109.jpg)
![Image](http://i44.servimg.com/u/f44/16/54/85/98/2012-110.jpg)
Gatouile