So talking to a DSM friend who used to be really into honda's he was saying there was a way to swap B series gearing into a d series casing?!??!! something about the top half of the casing can be swapped or something I wasnt quite listening. But, has anybody ever heard of this before? Because I would REALLY like some shorter gears on my car.

 

Impossible.

 

anything is possible!! if you really want shorter gears just get some made!

 

There's plenty of really short OEM gearing options for the D series transmissions. In fact, it's possible to gear a D series tranny shorter than a USDM ITR.

 

No it is impossible to make B series gears fit into a D series transmission. Unless of course you want to go to the trouble to completely re-engineer the whole transmission. Not worth it.

As Jaker said you can get plenty of short options for the D transmission. Or you can put a CG transmission together and use some after market parts to get even shorter ratios.

Why do you feel you need the special B series magic inside your transmission?

 

Well mostly because I used to own a gsr and miss the feeling of acceleration a lot, so instead of going through the trouble of doing a b series engine swap, I thought I could do a retro tranny since I have one sitting around. But if it isnt practical then, I might just have to do something else. Thanks tho.

 

Take a ZC gear stack and combine it with an SI final drive. That will get you a good street gearbox. If you want to get even further out there use an aftermarket 4.5-4.9 final drive and combine a ZC 1-5 for a really high street/race setup.

 

Well this sounds like what I was talking about. Can anyone else verify?

 

If you're putting this into a D16Y7 (96-00 Civic CX/DX/LX) gearbox, you won't be able to use the 1-2 from the ZC gearset, as they are an integral part of the mainshaft and the 92-up transmissions use a longer mainshaft/countershaft combination. The 3-5 will fit though, and get your hands on a shorter final drive. The Y7 transmission is 3.88:1 whereas the Y8 and the Z6 (92-95 Civic Si or EX gears and shafts will also fit) both have 4.25:1. Or do like he said and source an aftermarket final drive. I'd caution against going with anything shorter than the 4.7:1 though, because with the ZC 5th gear (0.878:1), you'll be looking at some pretty high revs at highway speeds.

 

i just had a 4.9 final drive installed in my sohc ex trans and it helped out a **** load.

 

How much did that run you and where did you get it from?

 

I'm curious too

 

teammfactory.com

 

nice ^

 

http://www.specialprojectsms.com/index.php?categoryID=4 that would be the place.