problems with my mad rat

[nosequehacer]

so your diff works right. It will be nice if you take your transmission out and inspect the gears. while you take the diff gear, the outdrives turn in opposite directions too.

Mace could be right, may be the idler gear is worn out and when you pull the throttle, all the power is lost becuase of this.

[billyboy9002]

bodgit When you rebuilt the diff did you back the diff screw off too much. You should just be able to turn the diff with two hex drivers in the drive cups. If it moved too easily then your diff is too loose.

i tightened it up when it was back in the car and backed it off 1/4 of a turn

mace is the idler gear ok?

is that the cog in the middle of the diff case? if so its fine

[bodgit]

The 1/4 turn is only a suggested starting point. You fine tune it till you can only just with moderate force move the diff with hex drives in the cups.

[billyboy9002]

so with the diff in my hand i put hex drives in each cup and try turn the diff with my fingers? so i can just move it?

[bodgit]

Originally Posted by billyboy9002

so with the diff in my hand i put hex drives in each cup and try turn the diff with my fingers? so i can just move it?

Yes. You should just be able to turn it.
This is from another forum on madrats
When screwing the diff, I screw it firmly until it bites and shows resistance. I then turn it back ¼ turn. I test it by popping 2 hex drivers in the drive cups, and try to spin the centre diff wheel. If I can move it I then tighten the screws up. Be careful though, as a ball diff should still move if you give it excessive force, so just a good firm attempt to twist it will be enough.

[billyboy9002]

whilst i have it in pieces do you think its worth changing the idler gear at the same time?

[bodgit]

If its got signs of excessive wear and you,ve got a spare you may as well.

[billyboy9002]

i looked at it earlier when i took it all apart and it looked to have no damage, will double check it all and let you know how i get on,

cheers for all the help guys

[nosequehacer]

Keep us informed ¡¡

[billyboy9002]

i stripped down the diff and transmission and gave it all a good de grease, when i took out the thrust bearing it was a little crushed and only had 5 balls in it?? so i replaced that greased it all back up and put it back together

now its all working again

thanks for all your help its much appreciated

[ian h]

How I check diffs whilst in car is to tighten the slipper all the way and then hold one wheel and the spur and try and turn the other wheel. If it turns easy then you diff is loose. Should be hard to turn.