Source for new xA Final Drive and/or gears?
Hello,
I'm hoping to find a source and info on a better final drive for my 2005 Scion xA. It's a 5-speed manual with a 1.5L VVti engine, and the final drive is 4.31:1, and so even though both 4th and 5th gears are "overdrive" ratios, it still is only going 40mph in 5th gear at 2000RPM. At 55mph, it is turning at ~2500RPM and I would love to drop the RPM's ~20% down to 2000RPM. This is the one imperfection with my local Toyota dealer (Acton Toyota, now in Littleton, MA) -- they do not have the info (inclination?) to find out what Yaris\Echo\Spectrum\xA\xB part(s) would be a bolt-in fix for me...can anybody here help me, please? Especially if you have done this on one of these Toyota vehicles. |
Do you know the transmission code for your car?
The Paseos run a C150 5 speed, and the Tercels run C141 (4 speed), and C150 (5 speed). All parts I believe are interchangeable. The 4 speed has the lowest differential @ 3.526. The only thing is, I'm not 100% sure that the 4 speed differential will fit a 5 speed transmission. If you run a C5x transmission, you have a much larger gambit of transmissions to choose from as you'll share parts with the Corolla, Matrx, and MR2. However, in this family of transmissions, I know the 4 speed differential does not fit into a 5 speed housing. Still, there are a few transmissions you could take a 3.722 differential from. |
Hi,
It seems I might want to look for a (2004) Echo: 2004 Toyota Echo - Specs All the transmission specs match, except for the final drive at 3.526 vs 4.31 which is ~17.5% taller, which would be just about perfect! |
...and sheet aluminum?
Another question:
Where would I buy sheet aluminum suitable for making and under pan? |
As far as I know, you could just swap a whole Echo transmission in-- it's basically the same, save for the final drive ratio.
Allegedly, the 9th-gen Corolla's 5th gear could be swapped in, and it's a somewhat taller ratio. I haven't heard of anyone doing that swap, but it's also in the C transmission family, so it is likely possible. |
Neil,
Based on my experience driving an xA (you read my review) I think this would be a great mod for FE. However I wonder if using a much taller final drive like a 3.5x would make the car overly sluggish from a standing start due to the 1.5's relative lack of low end torque. Maybe you should test drive an '04 Echo with a 5 speed to get a feel for it before committing to the swap. Also keep in mind that your car is about 300 lbs heavier than the Echo. |
Hello,
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Trident Metals-Locations-Boston Branch |
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At 60mph steady it posted some pretty high mpg numbers on my scangauge, 54-60mpg if I recall right. Anyways if you find a hatchback to try you might end up just trading in your xA for it... |
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