cbmprelude

can the 3.25 final drive from a crx hf fit in a hydro ek cx tranny? I know the fd is lower and was thinking about it to conserve fuel.


Modified by cbmprelude at 6:12 PM 4/22/2006

cbmprelude

bump

Syndacate

I'm pretty sure it can't, but I might be wrong..don't take my word on it :-\

cbmprelude

Does it make a difference that the final gear itself is a much smaller dimater (I'm assuming)

Mista Bone

should be same 3.25 FD, the ring gears are the same, but the countershafts are different.

schardbody

yeah, even if it fit it wouldnt make a differance, they got the same FD.

cbmprelude

ohh really, I thought the 3.7 final drive came standard in the ek cx tranny not the 3.25

schardbody

nope, 3.25, 3.7 is the dx/lx hx/cx is 3.25

cbmprelude

ohh ok thanks the website I had looked at published it as the 3.7 Is there any problem with upgraded to say the 4.2 in the ex? Will there be space issues or will I have to ground down the inside of the tranny?

cbmprelude

Bense's thread

https://honda-tech.com/zerothread?id=1593351

claims my cx has a 3.7 with the eg has a 3.25

cbmprelude

not trying to be an ***, but now I am very curious

schardbody

everything i have ever read says cx/vx is 3.25 FD.

cbmprelude

looks like Im gonna have to find out and report back

Bense

67/18 when I counted my 96 cx final drive

cx shares the same transmission as the same year vtec-e model.


92-95 cx / vx is the same
96-00 cx / hx is the same

Bense

3.25 is found in some crx hf's But it's pointless to try to get that to work in a hydro case. Because by the time that you do all that, you could have bought either a vx/cx final drive from either bone or me for very cheap.

I think I have two of these things. Wait, I am getting a vx tranny tonight for free, so I have three of these things.

Not worth putting a 3.25 in any transmission, because it will be easier to find one of those vx boat anchors that honda calls a transmission.

Because of the confusion with cx/vx and cx/hx transmissions I always try to refer to the 92-95 cx as a vx transmission. While refering to a 96-00 cx as a hx transmission.


92-95 vx gears are far apart from each other with the 3.25 final drive
remember, these cars had 13s on them. And didn't make any power past 4k rpm.

96-00 hx gears are the same as 96-00 dx gears, but with the 3.7222 final drive instead of a 4.058

vx = (65/20) 3.25
hx = (67/18) 3.722222222222222222222222222222222222222222222222 2222222222222222222
dx = (69/17) 4.0588235294117647058823529411765
ex = (68/16) 4.25

Bense

oh yeah, and all dx (92-00) have 4.058

1909th post, like my 2nd gear ratio. (1.909)

schardbody

so the hx tranny does have 3.70 FD???? im still lost you bastard.

cbmprelude

I just purchased a cx eg tranny from a great fellow ht-er. I will bolt it to my d16y7 in the fall in see how my fuel economy reacts

Bense

bad idea. and not worth the effort.

cbmprelude

Why do you htink so, the 3.25 signifacantly higher than my 3.722

schardbody

how much did you pay for the boat anchor. sure if you want mpg use it.

Bense

the difference is like 200rpm at 80mph in 5th gear between the final drives. Not enough to make a difference. The only real advantage is if you had a hx or vx engine with the lean burn and say you were doing LOTS of traveling on flat ground at a speed that was say 100rpm higher than where vtec engages.

Mista Bone

257 miles, 5.3 gallons

4.25 FD and .771 5th gear, 3200 rpm and 65 mph.

Wait for the 60 mpg attempt in the fall