will the ys1 tranny bolt right up to my jdm b16a motor in my 89 crx si

 

Yes it will..

Which ys1 do you have anyway? I hope not the one from 90-93 integra b18a..That tranny sucks with the b16a engine..

 

i just actually bid on one from 92-93 gsr it was cheap about 125 right now plan on doing full rebuild before installing

 

don't trust anyone unless you have seen it on the b17 motor or maybe test it out before you buy it.

 

The YS1 will bolt up, BUT you will need a clutch disc for a hydro tranny because it is 'thick spline.'

 

yes it will bolt right up. BUT the 92-93 tranny has one extra tooth so it will not fit a 88-91 clutch.

 

don't trust anyone unless you have seen it on the b17 motor or maybe test it out before you buy it
What does it matter if im doing a rebuild?

 

what clutch should i get?

 

94 and up teg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxcrazysi &raquo;</TD></TR><TR><TD CLASS="quote">don't trust anyone unless you have seen it on the b17 motor or maybe test it out before you buy it
What does it matter if im doing a rebuild?</TD></TR></TABLE>

There is no way to tell whether is it really a gsr/jdm ys1 vs a ls ys1 other than driving it, counting splines, or counting the revolutions. I'm pretty sure those are the only ways to check which one it is.

 

thanks michael i'll make sure i look into that

 

I just went through this. To tell them apart without counting teeth put the trans in 1st gear. Put a mark on the imput shaft and the diff(or axle if trans is in the car). Tun the imput shaft till the diff makes 1 full revolution. On a ls trans the imput shaft will turn 13 3/4 times and a gsr will turn 14 1/2 times

 

crxcrazysi;

Maybe the prior posts were not clear in what they are saying.

The 92/93 USDM YS1 transmissions came with two different gear ratios. There was the "LS" version that had wide gearing (read that as real good for the freeway). Then there was the "GSR" version that was a closer ratio (read that as "quicker" gearing and not that good for the freeway).

The 92/93 cases can take the "hydro" transmission gear sets and are "large spline" on the clutch disk.

The 90/91 YS1's don't have anything special to brag about and are "small spline" on the clutch disk.

The more common version was the LS one and they don't cost that much.

Wes

 

thanks wes and fellow tuners for the help

 

I have a 93 gsr ys1 hooked up to a 1st gen b16, great setup. It is the most sought after of the b series cable trannies, has the best gearing, and if parts are needed, they can be had at any local dealer unlike many jdm gearboxes.

 

Are the parts from the JDM YS1s compatible with the USDM Hydralic parts?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by leech &raquo;</TD></TR><TR><TD CLASS="quote">Are the parts from the JDM YS1s compatible with the USDM Hydralic parts?

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1st off all YS1 tranny's are cable, but yes, parts from newer hydro tanny's can be used. Also, USDM and JDM YS1's are identical, which the exception being the jdm version had the very rare option of an LSD, which the US market was never offered.

 

So if I got a gsr trans in the ys1 case then I could tell if it is a gsr by the spline