Final Drive ratio - need advise
08-24-2011, 03:09 AM
Post: #1
Final Drive ratio - need advise
Hi GUYs,

Need some advise from you here.

What's the ratio of the Beams 6s box, I want to change my final drive to suit it. Anyway my one now is far too noisy...and old.

Want to keep a normal rev. when doing a 100km cruising.

Also, any recommended brand? I want a stronger after market one as I am running a Beams.

It will be good if someone can teach me how to calculate the speed vs gear ratio vs engine rev. I am currently running a 195/55/15

Many thanks,
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08-24-2011, 04:36 AM
Post: #2
Final Drive ratio - need advise
Altezza (SXE10):
1: 3.874
2: 2.175
3: 1.484
4: 1.223
5: 1.000
6: 0.869
Finel Gear Ratio: 4.100

AE86: (for comparison)
1: 3.587
2: 2.022
3: 1.384
4: 1.000
5: 0.861
Finel Gear Ratio: 4.300

Personally if I were you I will use a 3.900 because hachi have smaller wheels than Altezza.

Weir Performance make 3.9 and 4.1 Wink (Toyota too)
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08-24-2011, 07:14 AM
Post: #3
Final Drive ratio - need advise
if you wont good pick up go the 4.3 ratio
as altezza s changed to a 4.3 later any way and the torque and power will be good about the same in 6th as what you have now
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08-24-2011, 07:16 AM
Post: #4
Final Drive ratio - need advise
Thanks a lot, super!

I shall consider your advise and check with Wier Performance.

THanks again. Thumbs up!
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08-24-2011, 07:18 AM
Post: #5
Final Drive ratio - need advise
Thanks also to Glenn.

BTW, I have source locally on the ECU, I think I will go for Links.
So, your adaptor can be soon in used.

Ah...I need some trumpet also..
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08-24-2011, 07:27 AM
Post: #6
Final Drive ratio - need advise
Just do a rough quick cal.

I can only do 75km/h in 3000 engine rev. with 6th gear and 4.3 final drive.
Please correct me if I am wrong...
I am using a 195/55/R15
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08-24-2011, 08:12 AM
Post: #7
Final Drive ratio - need advise
no you will be doing 90 kays with the 4.3 ratio and your tyres of 0.593 mm dia in 6th at 3000
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08-24-2011, 11:00 AM
Post: #8
Final Drive ratio - need advise
https://spreadsheets.google.com/spreadsh...y=CNqEs-cI
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08-24-2011, 05:44 PM
Post: #9
Final Drive ratio - need advise
THanks Glenn

And

Wonderful worksheet from Uze.
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08-26-2011, 01:17 AM
Post: #10
Final Drive ratio - need advise
Don't forget the option of 4.56, as that is the TRD final for the Altezza Wink

Our cars are much lighter, so probably not necessary tho.

Andrew
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