Lets talk 5spd VS. 6spd....

well, I know there are many other factors that come into play, but…

after some conversations with a few other board members and friends…I find myself considering a 6spd swap in the focus, but am curious as to the opinions of others on 5spd vs. 6spd transmissions when it comes to having a well rounded car.

I know in a 5spd, 5th is technically overdrive and has like no “pull” to it whatsoever. What im looking to talk about is relationship between gear ratio’s, how often shifting would occur in daily driving, highway cruising speed, and max speed for say highway racing in the 1:1 gear…

lets talk?

This is kind of a worthless comparison if you don’t list the 5 vs 6 ratios.

Yea just find the ratios and then you will have your answer.

I had the 6 sp in my svt focus, there wasnt much difference between 5th and 6th. I dont think its worth it to be honest

All depends on the ratios.

Once you have those you can start thinking about how well each trans will keep you in the meat of your powerband.

Yeah difficult to say

I love my 6 speed much more than my 5…the Subaru had the 5 speed but 5th seemed like a nothing gear to me. In the speed3 6th gear still can pull decently, nice for passing, going from 60-90 or whatever…

It is so difficult to really say

Here you go just plug the numbers into this gear calc and you can see all of the info you are looking for.
http://www.f-body.org/gears/

There are so many variables to this that it would be hard to determine. But in this case I’d see little to no benefit for the cost it would run you. There are many better things I could think of that the money could go towards on your focus. :wink:

many cars that offer a 5spd and 6spd cover the same range but with an extra gear. it’s not like they’re adding an extra gear on the end for highway use.

Also, what is your primary intention for the kaa? Straight Line or Curves & Turns?

You’ll “need” closer ratios if you’re going to be rowing the gears through a road course. On the dragstrip its not going to matter nearly as much in your app.

ya, prolly not worth doing unless you want to do it to say you did it. 5 sp vs 6 speed can play a huge diff in some cars and minimal diff in others. But your car, I doubt it.

MY 6spd is horribly geared but now i hate driving 5spds…5th and 6th there is a little difference but at highway speeds the mine is geared its worth it. I wish 6th was a little taller more overdriven that what it is. many people in the spec v work opt to use the maxima 6th gear because it is taller and more overdriven. i dont know the exact numbers off my head. back to not liking 5spds…i am just use to 6th and i always go for it in my brothers impreza and miata…later spec v’s have a bit different gearing taller 1st and 6ths which is better than the 02s but still shitty. IMO if geared right i think 6spd makes overal a better car…u can have a bit shorter 1st 2nd 3rd gears for that nice acceleration and and progressivley get taller for 4th 5th and a good OD for 6th…for good highway speeds…but now with cars like new Evo and GTR u get 7 fwd gears…but thats only my opinion on them

I should probably apologize ahead of time for bringing facts to a technical thread, but just in case anyone hates speculation as much as I do:

Focus
…gear diff overall
1 3.667 3.82 14.01
2 2.136 3.82 8.16
3 1.448 3.82 5.53
4 1.028 3.82 3.93
5 0.767 3.82 2.93

SVTF
1 4.44 2.88 12.70
2 2.67 2.88 7.70
3 1.33 4.25 5.70
4 1.08 4.25 4.60
5 1.33 2.88 3.80
6 1.08 2.88 3.10

ZX2
1 3.30 4.10 13.53
2 1.83 4.10 7.50
3 1.31 4.10 5.37
4 0.97 4.10 3.98
5 0.75 4.10 3.08

Note the 2 different final drive ratios for the SVT Fuckass.

We were kind of expecting the OP to do the homework.

seems like you would have a better results with a different Diff. 1) its probably cheaper, 2) its probably cheaper

LOL I wish mine were the opposite… 6th with take me to 202… and 5th is like 161.

Yeah well, at least I got people to look at me. :slight_smile:

lol, I need to take you for a ride in my car then :wink:

Yea my 6th…OD pulls after 3k…which is about 75mph

Sentra 1.8 4cyl 5spd

1st 3.333
2nd 1.955
3rd 1.286
4th 0.926
5th 0.756

Final 4.176

Sentra SE-R 5spd

1st 3.153
2nd 1.842
3rd 1.258
4th 0.947
5th 0.772

Final 4.133

Sentra SE-R Spec V 6spd

1st 3.416
2nd 1.944
3rd 1.258
4th 0.947
5th 0.772
6th 0.630

Final 4.428

thanks Fry, (sorry i was doing some laundry and forgot i posted the thread)

what I am looking at here is being able to still row through the gears in twists and turns, but stil have a decent amount of gear for highway pulls and such… I dont want to be using my shitty 5th gear in roll races. my other option is swaping the 3.82:1 final drive to a 4.06:1 which will make 5th less overdriven and pull nicer, but will also have me running like 4k rpms+ at 60mph and i dont entirely like the idea of that.

o yeah, the two different final ratio’s is because its a 6spd Getrag with three shafts instead of two…its a pretty badass complicated system (same trans as a mini cooper S)