Diff

[fiat218]

i want torque

[ROOK1]

So I just bought a pumpking from fiat124FL (thanks) and I need to know how easy/hard it will be to install. Here is how I figure the process goes.

1. Lift car and remove wheels.
2. Remove brakes.
3. Remove axels (not sure how but assuming there is a retainer)
4. Remove drive shaft
5. Drain diff fluid and remove pumpkin

Instalation is the reverse.

Any tips? How hard are axel seals to change? Not leaking, should I even replace?

Thanks.

Chris

[divace73]

So I just bought a pumpking from fiat124FL (thanks) and I need to know how easy/hard it will be to install. Here is how I figure the process goes.

1. Lift car and remove wheels.
2. Remove brakes.
3. Remove axels (not sure how but assuming there is a retainer)
4. Remove drive shaft
5. Drain diff fluid and remove pumpkin

Instalation is the reverse.

Any tips? How hard are axel seals to change? Not leaking, should I even replace?

Thanks.

Chris

It does depend on which diff you have, the front entry (I think they are called banjo) are easier to simply swap over, the later diff with the plate on the back (I think they call them Salisbury) is a little harder and all has to be reset porperly....so I am told, having that dilemma with my spider.
I have currently a 3.4 ratio that was out of a late model 132/argenta, super stong and great for the freeway, not so good for the track..

[fiat218]

what rear end would u need with a build up engine, ?

[124JOE]

i have a4.10 and want a 3.90
if your going for big hp you want lower
idk whats out there but i would like more first gear

[124ADDHE]

Even with the 3.90, first gear is only used on hills I really too wish the tranny was geared better, especially more of an overdrive in 5th!

[ROOK1]

I know in the 4X4 world tire size affects the gear ratio, so I am sure it will do the same here. So some of the people that want lower revs or higher gears may want to consider taller tires. Here is a calculator to give you an idea.

http://www.rocky-road.com/calculator.html

Tire size in inches can be found at the bottom of this page.

Sorry folks. I'm backwards. This shows what gears you need to go back to stock. So i guess you could reverse compute this.

Here is the link we need. This will calculate effective ration with tire size changes.

http://www.ajdesigner.com/phpgear/gear_ ... _ratio.php

Now back to the second question at hand. Is this a pretty straight forward removal and install? I am not a mechanic, but I am competent at working on cars. Is there anything I need to be made aware of?

Thanks for the help.

[124JOE]

yes so if i could get some 15"rims and taller tires it would give more low end
and increse top end

[124ADDHE]

I bet your biggest problem will be the brake lines, they are a bear to remove, if still the stockers; I just had to take a pipe wrench to the damn center rubber flex section, I heat shocked it 5 times with the torch and water, would not free up. ...out comes the big tools

[124JOE]

yes those rubber lines
i did mine like 8 years ago
but its all crotion,i use tranz fluid"3 days"
big vice grips and heat

also you can pull the cilp and pull it out to not hurt the body

thems the brakes

thanks all for the info on the Diff

[ROOK1]

I am getting ready to swap out the diff and I realized I do not ahve a gasket. After looking online to order one, I am unable to find one to order. Do I need one for this project?

[vandor]

Here's a gasket:

http://stores.auto-ricambi.net/-strse-1 ... Detail.bok

BTW, the axles are held in by snaprings. Sometimes these can be a bear to remove. You need large 90 degree snapring pliers, or small 90 degree needle nose pliers, and a small flatblade screwdriver. As you compress the snapring with the pliers, you use the screwdriver to pry to other side out.
Sometimes it takes me 10 seconds, sometimes 10 minutes to get one out.

[ROOK1]

Thanks Csaba. I will be placing an order for this along with a few other things soon.

[redek]

If you need an extra set of hands, let me know.

[ROOK1]

Will do. I would like to see you Spider sometime. Feel free to set up a photo album on the USA site.