mhewitt

i bought what i was told was a civic type r tranny, the case says s4c and its lsd but when i opened it up n counted the ring gear it was-64 and the final drive was-15, so thats a 4.26 gear ratio right? isnt that low for type r? i also counted the number of teeth for every gear on both shafts if no one can answer using this info i will post the rest.

mhewitt

countershaft-1st-42 input shaft-1st-13 (teeth)
2nd-40 2nd-19
3rd-35 3rd-24
4th-31 4th-28
5th-28 5th-33

mhewitt

also i need to replace the ring gear and final drive cause they r both tore up. any suggestions on where to buy them and what ratio would be best for my setup:
b20vtec 12.0 c/r,skunk2 stage2 cams, dc header,2.5"exhaust,skunk2 pro series i/m n 68mm t/b. runnin a 205/50/r15 tire for street/strip use so nothing to aggresive but good in the 1/4

mhewitt

it also has 15 bolts in the ring gear

mhewitt

help me

mhewitt

anyone know about weird trannys? lol

mhewitt

bumppp it up

mhewitt

bed bump

Mista Bone

too many bumps to help.

david974

http://shop.synchrotech-transmissions.com/
they have some final gear make you choice and they will help you
another for ratio
http://www.teammfactory.com/gear-calculator
hope this help

mhewitt

kinda need to know what tranny i have so i know what to order the gears for nobody seems to know about a 15 bolt ring gear for honda lsd

v.ice1

it is a type r tranny for sure since its s4c and if on that same stamp it says LSD well it typre r but if the LSD isnt from factory well it looks like a S.i tranny,those are really short gears gotta find from which type r is it from,spec ect...

mhewitt

called mfactory and they dont sell ring gears for the 15 bolt or the 14 bolt honda ring gear lsd. so i would also have to buy a new lsd in order to get the stuff from them. does anyone know anywhere that sells ring gears for the 15 bolt design? or maybe a final drive for my spare lsd which is a 14 bolt honda lsd with a 66 tooth ring gear?

mhewitt

bumppp

mhewitt

will si final drive work with the 66 tooth type r ring gear?

Natural Aspirations

That sounds like an SiR LSD not an Type R LSD

It has b16/ctr/USD ITR gear ratios with an SIR LSD and an LS final drive.

Sounds like some pieced together a pile of parts.

H-Motors is one of the cheapest places I have found the OEM 4.7 ITR final drive.

I would also try to source a used ITR LSD and go that route if your on a budget.

mhewitt

u talkin bout the 15 bolt 64 tooth ring gear lsd is an sir? or the 14 bolt 66 tooth ring gear lsd? i can use the spare 14 bolt 66 tooth lsd i have then i would just need a final drive that works with it. so what f.d. do i need to buy?

Natural Aspirations

I suspect its a SIR viscous LSD which as far as I have seen no one makes a replacement final drive for.

Some info here:

https://honda-tech.com/forums/transmission-drivetrain-127/itr-lsd-into-b16-tranny-%2A%2A%2Ahelp%2A%2A%2A%2A-2570962/

mhewitt

thanks that info helped some especially the part about the ls countershaft not working with type r 66 tooth gear because i was gonna try it seeing how i have one laying around n it is 15 tooth. so i have to get an si 15 tooth countershaft to work with 66 tooth type r ring gear. in order to use spare lsd. but if iwanted to use my current lsd (4.26)ratio i would have to find a rare 64 tooth 15 bolt SiR ring gear but then could use the 15 tooth ls countershaft with it. did all that come out correct???

mhewitt

right?

Natural Aspirations

Both parts should be from the same set. Mixing gears is not advised.

Corky21

15 bolt b series lsd’s/ ring gears and unique to the b16 88-91 y1 cable transmissions which were optional lsd’s. they run the small spline clutch discs. If you still have it I’ll buy it haha. If this was found in a hydro case someone swapped the gear set into it.