Will some one explain gear ratios in simple terms like i picked out two manual trans that are cable clutches and im trying to find the one with the best acceleration i know HP, torque ,and wheel size have a lot of affect but what im getting at is should the nubers be closer teogther or further apart see specs on the two below

Y1
Found in: CRX/Civic (optional LSD)
Type: Cable
1st: 3.166
2nd: 2.052
3rd: 1.416
4th: 1.102
5th: 0.870
R: 3.000
FD: 4.266
YS1
Found in: Integra 92-93 XSI/RSI (DA6, DA9)
Type: Cable
1st: 3.307
2nd: 2.999
3rd: 1.459
4th: 1.107
5th: 0.880
R: 3.000
FD: 4.400

i plan to set the car up for auto cross and i just want to know the best all round trans for track use that has realtive acceleration and wont let the rpms run rediciously high

 

A GS-R transmission or better yet a Type R transmission.

I autocross my 94 RS, I replaced the LS transmission with a GS-R and added Phantom Grip LSD, [will be replacing the Phantom Grip with a Quaife].

The GS-R transmission is a great transmission for autocross and DD, you can still get highway speeds without revving too high.

Every thing you need to know about B series transmissions...
http://hondaswap.com/swap-articles/b...n-guide-29099/ .94

 

sweet are thbose both hydraulic? caus im trying to stick to cable i guess i could look for a conversion duh and thanks for the info

 

In VERY simple terms without going too deep:

The closer the numbers are between gears, the less RPM drop when you shift from one to the other (a good thing).

A higher final drive ratio (4.4 vs 4.266 for example) means better acceleration.

So with the 4.4 you might hit 25mph in 1st gear at 6,700RPM whereas with the 4.266 you would be at 30mph at the same RPM.

This is all dependent on the gear x FD though.

For your Y1 tranny, 3.166 x 4.266 = 13.51
For your YS1 trans, 3.307 x 4.400 = 14.55

Thus, the YS1 transmission is better for acceleration / all motor (at least in 1st gear - you need to do the math for all gears and decide what gears are important to you if they all aren't greater). If you were boosting, a longer transmission would be desired and the Y1 would be a better choice.

Hope this helps

 

Both of those are tightly-geared transmissions. IMO you'd be hard-pressed to find much of a difference between the two.

The best way to compare them is to calculate the final drive ratios in each gear. You do this by multiplying each gear ratio with the final drive ratio. This number equals the amount of times the engine spins for each rotation of a wheel. The higher the number, the harder the car will accelerate in that gear, but the sooner it runs out of gear (requiring you to shift up).

For the Y1 that gives:

1st: 13.5
2nd: 8.8
3rd: 6.0
4th: 4.8
5th: 3.7

For the YS1 its:

1st: 14.6
2nd: 9.3
3rd: 6.4
4th: 4.9
5th: 3.9

The final gearing on the YS1 is about 5% higher, meaning it will feel about 5% faster in each gear, and need to shift 3-4 mph sooner. This will not make a very big difference. Both of these transmissions are also geared tightly, meaning the rpm drop you get after shiting will be small.

I would say go for the YS1, just because it's geared marginally shorter (however the Y1 is actually geared slightly tighter). The only caveat would be if you have small tires or a low redline. In that case a slightly taller 2nd might help for autocross. It would be annoying to be running into redline in 2nd.

 

Go for the YS1 because you can interchange the hydro parts. The Y1 parts are becoming scarce in the event you need replacement parts.

 

Yep, if you find just a YS1 cable case, you can swap over itr trans internals into it.