B18C5-EH2

Okay so I've got a 1993 Integra GS-R YS1 cable tranny and I'm installing all new bearings and seals, and while I'm in there I want to lower the 5th gear from it's retarded-short .875 ratio to something more highway friendly.

I know I can take the .742 5th gear set from a 92/93 YS1 LS/GS/RS tranny, but I would ideally like to have the even taller .714 94-01 Integra S80/Y80 5th gear from the LS/GS/RS model.

Since I'll have the already shorter 4.400FD I want that extra low 5th gear to offset it. This is my DD Civic wagon and I want lowest 5th gear cruising rpm. I've got an ITR set-up in my other car if I want short gearing, speed, etc.

The 92/93 YS1 has the same mainshaft diameter as the 94-01 trannies, and it takes the clutch. I know people have machined the casing and even installed facory Type R helical LSDs in them, and I've heard of people swapping all guts (gears included) but I'd like to hear from others with personal experience having swapped gears between the two trannies.

I plan on buying the gears new from Acura, so if I bought the Y80/S80 ones and they didn't work I'd be screwed. I'd buy a used beat-*** tranny if people didn't still want ridiculous amounts for them, and anyways I literally only need the 5th gear alone.

Thanks for any help you can offer.

jhammond_82

iTrader: (1)

if i'm not mistaken, the larger splined shaft on the ys1 allows for hydraulic internals interchangeability. i have the ys1 trans as well, and from what i read, the parts can be changed out for hydraulic parts. so i would venture to say your good to go.

B18C5-EH2

Well I did some extra research and I've come to the conclusion that it should work based on the fact that the 93 GS-R, LS, and 94 LS all have the same 5th/R synchro sleeve set part number 23626-P21-335. I'm sure if I researched other years and models I'd probably find the same part numbers apply to all of the USDM 92-01 Integra trannies regardless of model/trim level.

Of course I will post my absolute findings after I install the 5th gearset so that this topic may serve as a tech resource for others wondering the same thing.

I figured it'd work, but I wasn't willing to bet $110.00 (the cost of the gears) that it would without some more info.

1gencrx

Please do update this thread. I have the exact same question for a trans I'll be installing this summer.
Thanks

91tegraRS

yeah i want to know too
i am doing b16 hydro internals (s4c trans) into a Ys1 case and want to do the ls 5th and i want to know if the ys1 ls 5th gear will fit on the hydro internals or do i need to get a hydro trans 5th gear

please update

g2daturbo

yes 5th gear is interchangeable with all 92-93 ys1's and the new hydro b series trannys meaning any gear combo can be done... I have tons of parts trannys and have the hydro 5th gear set if anyone is interested... also have the cable 5th gear set as well.. hit me up if you guys need some parts .. got lots of minty cable ls gearsets and a few hydro gearsets as well as misc. gears...

gunnerman

yes..it is interchangeable...all large spline tranny internals are interchangeable.

teggything

ys1 gears are interchangeable with hydro and vice versa

91tegraRS

sweet glad everyone could clear that up

its nice to hear it from more than one source ,thanks guys

89EFLS

Wow. This is deffinatly a helpfull thread!
But now to bring up a new question.
Is there an even taller gear out there?
I know it sounds crazy. But I would (and I'm sure others would aswell) like to know all of the options before we tear into such a project.

89EFLS

And another question. The 5th the only interchangable gear?
Or could you put the b16 3rd and 4th into an LS?

joshuathewolf

Ok I know this thread is old but I would like to know if there is any difference between the HYDRO ls/gsr (94-2001) and the CABLE B16 (A1) internals with regards to compatibility?

from searching this topic (my goal was to discover if b16 (A1) CABLE internals would work in a (94-2001) ls/gsr case) I found some who said it could be done if EVERYTHING was swapped.

so my question now is can I use the (94-2001) ls 5th gear in this body-snatcher setup?

thanks,

P.S. MR. BONES would be a big help I feel.