91 civic si

[some_other_dave]

The early Integra B18s used cable clutches, you could have the trans from one of those.

You'd know if you had a YS1, you'd be spinning 4000 RPMs at 65 MPH. (I may be exaggerating, but probably not by a lot!) They were intended for the very high-revving B16 VTEC motors.

I'm not sure how easy a final-drive swap would be. You have to use B-series parts, though--the D-series stuff is not compatible. So no HF final drive or gears for you.

-soD

[Stacygifford]

I will double check tonight, but I am almost certain that is around 3400 at 65

[Stacygifford]

Sorry it has taken me a while to get back on here... here are the "ratios" I don't have a clue how to figure out what trans it has without pulling it apart!!!! but I have to order the rebuild kit BEFORE I tear it down...

1st @ 4k ~19mph
2nd @4k ~32mph
3rd @ any rpm 0mph (grinding sounds)
4th @ 4k ~65mph
5th @ ~3000 is 70mph

This dosent match up with any cabe trans I have found

[Stacygifford]

This seems like a "high" geared b series trans, witch doesn't make any scene....

First and second match up with the JDM J1, However 4th and 5th are WAY higher...

[Stacygifford]

Bump for much needed help

[War_Wagon]

It probably doesn't match up because you have aftermarket wheels and tires that aren't factory sized. If you are trying to figure out your gear ratio based on RPM and speed in a certain gear, and comparing that to factory specs, you need to be using a tire with the diameter of the factory equipped tire. If you measure the diameter of your tire, compare it to the diameter of the factory equipped size, then use that difference as the percentage of correction for your results, you will have a better chance of figuring out what gear ratio you have.

[Stacygifford]

Thank you for the input, I looked into it.
The Factory size ia a 185/60/14 Mine are 195/55/15 that is only 3.1% off.
If im not mistaken, this would make it even longer geared...


This is the speed diffrece chart.

[War_Wagon]

Hmmm, ok. Sorry, I saw the wheels and that was my first guess. Man I got nothin' at this point, hopefully someone else can help you out ha ha

[some_other_dave]

Originally Posted by War_Wagon

It probably doesn't match up because you have aftermarket wheels and tires that aren't factory sized.

If you're looking at the speedo and the tach, the wheels and tires don't come into account. They can change your actual speed, but since the speedometer really just reads off the output shaft of the transmission the wheels are a non-issue.

As to what you've got, I really don't know.

-soD

[slownugly]

From what I understand there's no way to tell Honda gear ratios by transmission id numbers. Best way is with the transmission out and putting it in gear. And count the revolutions of the input shaft spinning versus the output shaft. Requires some added math. You could possibly do it on the car by putting it in gear and counting the revolutions of the flywheel or balancer versus the trans output/ axle