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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » whats my 'final drive' and how can i change it? » Post Reply

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Cybermonkey

 posted on 19th Apr 03 at 16:47

quote:
Originally posted by Adam_lee
1.2 SXI is fine on 17" rims in 5th gear. Maybe cos the sxi has a close ratio box. in fact its better on 17's cos it lowers the revs a little when doing 70mph, hence the wee little chicken chaser dosent scream as much! lol. If you want a smaller final drive maybe you should look at fitting the sxi gearbox.


Actually kris is talking about the early 1.2's. Which were 8v and a LOT slower than the 16v. Oh yeah, with 17's on, you are not doing 70mph like it shows, you are doing nearer 76mph.

Dave


WARPED

 posted on 19th Apr 03 at 13:03

id imagine mine is the same as i have a sport


Adam_lee

 posted on 19th Apr 03 at 10:13

1.2 SXI is fine on 17" rims in 5th gear. Maybe cos the sxi has a close ratio box. in fact its better on 17's cos it lowers the revs a little when doing 70mph, hence the wee little chicken chaser dosent scream as much! lol. If you want a smaller final drive maybe you should look at fitting the sxi gearbox.


Kris TD

 posted on 18th Apr 03 at 23:53

it would be much easier to just change the gearbox for a cr one.


WARPED

 posted on 18th Apr 03 at 18:37

been speakin 2 a few of my rally mates and it could be quite a big job, meetin one 2nite so will find out just how big :)


Kris TD

 posted on 18th Apr 03 at 10:27

quote:
Originally posted by TOMAS
LOL i dont know much about final drive but all i know is my 1.2 16v with 17's goes quicker in 4th than bleedin 5th!! - eh whats that all about then?


sr's were like thihs, its becasue the 1.2 doesnt have enough torque to drive it on 17's witha huge install i 5th gear.


WARPED

 posted on 18th Apr 03 at 09:11

so its not really a budget mod then? :) i was just told by velos that its another way of increasing 0-60 which is what im after, not too bothered bout top speed.

how much we talkin to have it done?


TOMAS

 posted on 17th Apr 03 at 23:11

LOL i dont know much about final drive but all i know is my 1.2 16v with 17's goes quicker in 4th than bleedin 5th!! - eh whats that all about then?


Wolfy

 posted on 17th Apr 03 at 22:44

more curvy the stright... ::confused::


fearless

 posted on 17th Apr 03 at 18:26

Final drive is calculated by dividing the number of teeth on your crown wheel by the number of teeth on your mainshaft in your gearbox - the higher your final drive the quicker your accelaration - but the top speed will b lower - typical final drives are 4.2/4.5/4.8/5.1
To change the final drive requires a different crownwheel and mainshaft (depending which box your running)
Not quite as straight forward as u though eh!!!


WARPED

 posted on 17th Apr 03 at 17:04

apparantly it will give me better 0-60

any1 know bout this? ? ?