Fiat 500 Forum banner
1 - 14 of 14 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter · #1 ·
After driving around my love for long distances this past week, leading to hours constantly in the seat, the thought hit me that the stock gearing might be too economy focused. I wouldn't mind sacrificing some economy for some go.

Is there a company out there that offers a higher gearing, or maybe some European company that I can put in my US spec?

Fiat 500 Sport manual
 

·
Registered
Joined
·
4,580 Posts
After driving around my love for long distances this past week, leading to hours constantly in the seat, the thought hit me that the stock gearing might be too economy focused. I wouldn't mind sacrificing some economy for some go.

Is there a company out there that offers a higher gearing, or maybe some European company that I can put in my US spec?

Fiat 500 Sport manual
I don't think you want that with a 101 hp car. It's not a quarter mile car. Maybe trade it in for an Abarth if you're craving speed.
 

·
Registered
Joined
·
3,599 Posts
If it's available, it might not be a bad modification. The last vehicle I spent a fair amount of time messing with was a Ford ZX2. I mixed and matched parts and came up with a really nice close ratio four speed trans with a tall fifth overdrive.

I took a zx2 trans, swapped the 4.11 final drive with a Ford Escape 4.59 unit, and added the Escape's 3rd and 4th gear and topping it off with a SOHC Escort 5th.

The car was transformed, it was a lot of fun bringing up to speed because the next gear never took you out of it's peak powerband, all the way to 105mph.

Then for cruise time, the 0.67:1 fifth gear brought the revs back to where things were as stock, so I did not have any compromise on freeway fuel economy.

I will bet there is something from EU that can achieve similar goals for the 500, but might be either skill or cost prohibitive.
 
  • Like
Reactions: WLDTOPO

·
Registered
Joined
·
196 Posts
After driving around my love for long distances this past week, leading to hours constantly in the seat, the thought hit me that the stock gearing might be too economy focused. I wouldn't mind sacrificing some economy for some go.

Is there a company out there that offers a higher gearing, or maybe some European company that I can put in my US spec?
Your best bet would be to swap the rear diff of a compatible car, as someone mentioned above. You'd need to find a compatible car, likely something from the FIAT family using the same gearbox/drive train, like a Panda or Punto. You could get custom gears made, but that's pricey.

Michaelo, it's done all the time. My BMW 325i had a diff swap from another model for a bit more pep, and my Z4 M Coupe has a 3.91 final drive instead of the stock 3.62. Diff swaps are sometimes called the poor man's supercharger.
 

·
Registered
Joined
·
4,580 Posts
Swapping rear ends shouldn't even be relative to the topic. The car is not rear wheel drive.
 

·
Registered
Joined
·
1,780 Posts
Swapping rear ends shouldn't even be relative to the topic. The car is not rear wheel drive.
No, but it DOES have the equivalent of a differential, does it not?
 

·
Registered
Joined
·
4,580 Posts
No, but it DOES have the equivalent of a differential, does it not?
Yes, but you have to crack the whole tranny open compared to swapping a rear diff. out. Again, he wants to change this for what reason?
 

·
Registered
Joined
·
289 Posts
You need a ring and pinion swap. Not sure what would fit but someone will. RRM lists an LSD for $1399 but dosen't show it coming with ring/pinion gears.
 

·
Registered
Joined
·
182 Posts
I'm with you guys/gals in that this seems like a ton of work for a 101 hp car, but zonker has definitely got my vote for "True Gearhead of the Week". Kudos to you man for being willing to get your hands dirty for a good cause. Sometimes you just gotta do something because you can...
 

·
Registered
Joined
·
41 Posts
I think you're better off starting with an Abarth box, just because it seems like they're being used for racing. The power of the car is a moot point, to say why bother because it's 100 hp. Getting the most use of the engines power is the point, whether it's 85hp or 750hp. The RRM diff is from quaife, and you usually have to reuse your oem gear. Id try one of the hotter versions we don't get to see about the FD or gearing swaps. Punto evo, any of the Abarth models, maybe even a Panda. No guarantees it will work obviously, but the cars haven't been on our side of the pond long enough to get an answer like your looking for.
 

·
Registered
Joined
·
962 Posts
Your best bet would be to swap the rear diff of a compatible car, as someone mentioned above. You'd need to find a compatible car, likely something from the FIAT family using the same gearbox/drive train, like a Panda or Punto. You could get custom gears made, but that's pricey.

Michaelo, it's done all the time. My BMW 325i had a diff swap from another model for a bit more pep, and my Z4 M Coupe has a 3.91 final drive instead of the stock 3.62. Diff swaps are sometimes called the poor man's supercharger.
But you don't do this on a Fiat 500!!! It's not a good candidate. Better off getting another car.
 

·
Registered
Joined
·
196 Posts
But you don't do this on a Fiat 500!!! It's not a good candidate. Better off getting another car.
If there is/were a compatible upgrade, it would be the perfect candidate. Changing the gearing would improve performance without requiring an upgrade to other systems like the transmission or brakes, as you wouldn't be increasing horsepower.
 
  • Like
Reactions: zonker

·
Registered
Joined
·
3,599 Posts
+1 to the above post...
 
1 - 14 of 14 Posts
Top