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Discussion Starter #1
first time here, love the site.

the question is...does anyone know what the normal stock revs are? i have an 06 box with the 5 spd manny.

for me 1st is 20 @ 3500
2nd 35 @ 4000
3rd 45 @ 3500-4000
4th 60 @ 3500-4000
5th seems to have no change from 4th @ 60 @ 3500 and keeps going!

every car ive driven is usually between 1-2 after shifting, but the box seems to keep at 3 to 4 range :confused: . i really dont wanna be overworking my baby engine. And is there anyway to drop the revs at coasting speeds?
 

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Welcome!!

The stock gearing is quite low. Mine screams at 80 on the interstate. There's not much we can do about it, but I would love a taller 5th gear. I understand why they did it, but I think they went too far with the gearing. It reminds me of my Chevelle.....
 

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mertechperformance
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there is no way to cut engine speeds than to either cut road speed , or install echo/yaris transmissions.
 

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The automatics rev lower. My xB at 65 MPH is reving at 2,800 RPM or so. My Sentra kinda does the same thing as your xB. At 60 MPH, it's at 3,000 RPM. In an automatic Sentra, the revs are at 2,500 or so. It's the lower gearing ratios in the xB that help the car move quicker, but that make it rev more. Don't worry about reving the engine. It's perfectly fine, as long as you don't bounce of the redline every single day. Hahaha! Proper maintenance also does wonders. ( ^o^)
 

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Anime Gee said:
The automatics rev lower. My xB at 65 MPH is reving at 2,800 RPM or so. My Sentra kinda does the same thing as your xB. At 60 MPH, it's at 3,000 RPM. In an automatic Sentra, the revs are at 2,500 or so. It's the lower gearing ratios in the xB that help the car move quicker, but that make it rev more. Don't worry about reving the engine. It's perfectly fine, as long as you don't bounce of the redline every single day. Hahaha! Proper maintenance also does wonders. ( ^o^)
I'm in agreement for the automatic. Doesn't seem to hurt it, they're tough little cars!


Oh yeah, Welcome!! You'll find lots of useful info here. :)
 

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Nor*Cal's Most Hated
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WELCOME to Club xB!

On the freeway, at appx 80 mph, the engine will be running at appx 4k rpm.

Not that I would know or anything.
 

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squirrel said:
WELCOME to Club xB!

On the freeway, at appx 80 mph, the engine will be running at appx 4k rpm.

Not that I would know or anything.
That's been my experience 100% in both of mine.

Also, that will not hurt the motor. 4000 RPM is quite standard on these cars. They will run at that all day.

Welcome to the club!

-Alex
 

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Discussion Starter #9
so adding headers/exhaust or intake will not lower the revs?

ive thought of going with dc for headers and exhaust...any advice?

anyone know where i can get some engine management systems?

if anyone here is from the cali central valley holler at me! :)
 

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The only thing that effect revs are vehicle speed, gear ratio, and tire diameter. There's no bolt-on other than a different tranny that will change it.
 

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Some info assuming everything is stock:

Code:
====

(tire rev per mile) * (final ratio) * (top gear ratio) = (engine RPM at 60MPH)

For the stock xB automatic those numbers are:

880 * 4.15 * 0.70 = 2556.4 RPM

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Just using the stock tire size, the differential ratio, and the top gear ratios of 
the xB with manual or auto transmission I come out with these figures, plus 
or minus maybe 10 RPM...

AUTOMATIC:

2560 RPM @ 60 MPH
2990 RPM @ 70 MPH

MANUAL:

3070 RPM @ 60 MPH
3580 RPM @ 70 MPH 

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Gear / Ratio         C50 5MT         U340E 4AT
       1st           3.54:1          2.84:1
       2nd           1.90:1          1.55:1
       3rd           1.31:1          1.00:1
       4th           0.96:1          0.70:1
       5th           0.81:1             –
    Reverse          3.25:1          2.34:1
  Final Drive        4.31:1          4.15:1 

Stock tire revolutions per mile = ~880 (Varies by tire make, size, wear, etc.)

The torque converter is a locking torque converter that locks (no slippage) 
while cruising in either 3rd or 4th gear for highway efficiency.

(Information from Scion introduction dealer packet.)

====
 
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