4wd transmission proplems, broke gearbox then diff and transferbox updated with broken gear selec Options

[tufy]

2 months ago i broke my gearbox, because i coulnt find stronger gearbox for daily use, i installed a 2nd hand standart gearbox which was slightly shorter... after i installed this g.box, traction of my car was more like front wheel drive.. (%60 front and % 40 rear. thats what i feel). then when i make a quick start i started to feel that rear diff. is slipping gears. after 3000 km i break my rear differential.
does anybody knows if ratio of g.box diff ratio and rear diffrential ratio change it make diff stress and broke easier. or my diff. broke from too much power.
simply;
does it make proplem in a 4wd car if i have shorter ratio gearbox without changing diff..
sorry for my bad english. and thanks for your help.

This post has been edited by tufy: Apr 17, 2007 - 9:49 AM

[Hanyo]

As long as your front and rear differential are idential, you should not be experiencing problems.

I think, the main problem your having is caused by the shorter geared transmission you put in. The lower gears increases the stress on the rest of the drive train. The added stress will cause the weakest link to breaks, that is why your rear differential finally gave out.

Another problem I can think of is, If the center differential of your new transmission is more direct. This would mean the power is not split correctly between the front and rear wheel. This would increase the stress to the rear differential.