- Sat Nov 27, 2010 11:45 pm
#224871
Hi my fellow Egian! I have a question/ idea, hehe I was wondering if it is possible to do a dx/si hybrid tranny. Like have the si final drive. And the other components of the si...so yeah any input and advice. Cause I'm bout to do a z6 engine swap. And mate it w/ my dx tranny, I know u guys would say its worthless and not to do it. So that's why I'm asking if I could do a dx/si hybrid...
- Sun Nov 28, 2010 12:29 am
#224876
it can be done on b series transmission's so i don't see why you can't do it on d series ones
- Sun Nov 28, 2010 1:14 am
#224879
But I want to know what other components I need from the si/ex tranny for it to be like a si tranny...I don't want buy a whole si tranny and replace some of the worn out parts from the used si tranny in which I could use other parts from si tranny parts and put it on my spare dx tranny..
- Sun Nov 28, 2010 1:24 am
#224880
Best way to check is check part numbers on the mainshaft n countershafts. Hondapartsnow.com. that's what u would worry about imo. Other then that u should be good to go.
Team XXX Racing/WGHonda
My Build Thread EG#1 --> http://civic-eg.com/viewtopic.php?p=115 ... ht=#115778
EG#2--> http://civic-eg.com/viewtopic.php?t=23264
H2D--> http://civic-eg.com/viewtopic.php?t=192 ... ght=#19294
My Build Thread EG#1 --> http://civic-eg.com/viewtopic.php?p=115 ... ht=#115778
EG#2--> http://civic-eg.com/viewtopic.php?t=23264
H2D--> http://civic-eg.com/viewtopic.php?t=192 ... ght=#19294
- Sun Nov 28, 2010 4:22 am
#224895
http://www.zealautowerks.com/transcalc.php
Above is a link to a Transmission calculator. even when you put the Final Drive of a ex/si transmission to a DX Tranny (4.25) your gears will still not be close to a EX/Si Tranny.
If you want to do it though, you will need the following from the D16z6 ex/si gear box.
Final drive ring gear
Countershaft
First gear
Distance collar
Needle bearings
Parts will look like the following:
It will cost more to do this to a DX Transmission then it would be to buy a EX/Si Transmission. I dont really think its worth the money or the effort.
Above is a link to a Transmission calculator. even when you put the Final Drive of a ex/si transmission to a DX Tranny (4.25) your gears will still not be close to a EX/Si Tranny.
If you want to do it though, you will need the following from the D16z6 ex/si gear box.
Final drive ring gear
Countershaft
First gear
Distance collar
Needle bearings
Parts will look like the following:

It will cost more to do this to a DX Transmission then it would be to buy a EX/Si Transmission. I dont really think its worth the money or the effort.
- Sun Nov 28, 2010 4:45 am
#224897
Yeah that's what I was thinking too, cause I don't want to swap my z6 in with a dx tranny in which if I do that.the z6 won't be as fast as if it was mated with a si tranny...correct me if I'm wrong or will it be the same or is it more like me running a vtec-e?
chrono404 wrote:http://www.zealautowerks.com/transcalc.php
Above is a link to a Transmission calculator. even when you put the Final Drive of a ex/si transmission to a DX Tranny (4.25) your gears will still not be close to a EX/Si Tranny.
If you want to do it though, you will need the following from the D16z6 ex/si gear box.
Final drive ring gear
Countershaft
First gear
Distance collar
Needle bearings.
Parts will look like the following:
It will cost more to do this to a DX Transmission then it would be to buy a
EX/Si Transmission. I dont really think its worth the money or the effort.
Yeah that's what I was thinking too, cause I don't want to swap my z6 in with a dx tranny in which if I do that.the z6 won't be as fast as if it was mated with a si tranny...correct me if I'm wrong or will it be the same or is it more like me running a vtec-e?
- Sun Nov 28, 2010 5:46 am
#224904
Another consideration on swapping parts between DX and EX/SI transmissions is the fact that in the EX/SI trans some of the bearings are larger.
I remember replacing the input shaft bearing in both a DX and EX trans and the bearing in the EX was bigger. The main shafts use the same part number but the bearing diameter is different where it fits in the case.
This will limit the ability of swapping parts.
I remember replacing the input shaft bearing in both a DX and EX trans and the bearing in the EX was bigger. The main shafts use the same part number but the bearing diameter is different where it fits in the case.
This will limit the ability of swapping parts.
- Sun Nov 28, 2010 6:07 am
#224906
its gonna be quick
my friend has a d15b vtec wit a lx/dx trans and he has one of the quickest single cams in my town
EJ1STYLEN wrote:So I'm guessing if I run the z6 & dx trans, it's like me running a d16z1 vtec-e? Right? Or it will be a little better than a d16z1 vtec-e...
its gonna be quick
my friend has a d15b vtec wit a lx/dx trans and he has one of the quickest single cams in my town

- Sun Nov 28, 2010 6:27 am
#224910
a d16z6 with dx tranny will be quicker then a VTEC-E Setup. It should also be quicker then Mini-me's with DX trannys as well.
My D16z6 with a HX(96-00 Civic VTEC-E) Transmission is quicker then my friends OBD1 D16a6 with DX Transmission. Both engine/Trannys in Civic DX Sedans. Mine a 93, his a 95.
Having a Tall Transmission isn't nessecally a bad thing. My Sedan is more then quick enough for Daily Driving fun and still gets awesome Economy.
If you go to a EX/Si Transmission your car will be quicker. If your main plan is racing people and being faster then them, Going with a EX/Si Tranny is an obvious choice.
However if you just want a quick car that gets good economy especially when fuel prices in the US are expected to go up. It makes sense to keep a taller geared transmission.
My D16z6 with a HX(96-00 Civic VTEC-E) Transmission is quicker then my friends OBD1 D16a6 with DX Transmission. Both engine/Trannys in Civic DX Sedans. Mine a 93, his a 95.
Having a Tall Transmission isn't nessecally a bad thing. My Sedan is more then quick enough for Daily Driving fun and still gets awesome Economy.
If you go to a EX/Si Transmission your car will be quicker. If your main plan is racing people and being faster then them, Going with a EX/Si Tranny is an obvious choice.
However if you just want a quick car that gets good economy especially when fuel prices in the US are expected to go up. It makes sense to keep a taller geared transmission.