DX vs EX tranny.
 

Im picking up a 95 dx and I already have plans of picking up a d16z6. should I also look for the tranny or would the dx be fine. I know the gears are shorter on the ex. Anyone wappy with the ex engine dx tranny setup?

I do have my flamesuit on so go ---- yourself in advance if your ready to torch me! :y

Re: DX vs EX tranny.
 

If it doesn't grind or anything go get it. Longer gears=more spoolage before you have to shift. Hell find a cx/vx tranny and find a big fat snail.

Re: DX vs EX tranny.
 

Makes sense. Thank you for the reply. CNS motors wants 425 for the engine and 350 for the tranny. I think I will take your advice though :)

Re: DX vs EX tranny.
 

just because you have more spool time doesnt mean that its better. shorter gears are still going to accelerate faster...

Re: DX vs EX tranny.
 

the rumor of longer gears=faster is about has wrong has people caring about anne nicole smiths death. A typical turbo d is gonna make 200 whp and in the 165-190 tq range


Im sorry thats all motor b20/vtec range. Would you recommend a ls trans vs an itr tarns for the b20 of course not.


Longer gearing is only needed for cars making 450+ whp and even then people vary depending on slick size.

Re: DX vs EX tranny.
 

yeah i second the rumor of longer gears being better with boost. ive had both EG ex and dx trans, EX all the way! but definately dont spend 350 for one. just rock the dx if thats the case.

Re: DX vs EX tranny.
 

I think the 350 is a little much but that is kinda what they sell for these days unless you find a deal

Re: DX vs EX tranny.
 

I say go with whatever works. Just get the DX and consider it part of your 450whp build if somebody asks why your using that instead of a ex/si tranny. :6

Re: DX vs EX tranny.
 

i had a dx tranny on my last boosted car then swapped it out for an ex tranny. it was like night and day, doesn't matter what everybody says, shorter gears is always better for faster ecceleration.

Re: DX vs EX tranny.
 

only time where a DX is acceptable IMO is with cable trannys. the SI and DX have the same gearing, but the final drive on the SI is just a touch shorter. and its not even that much different. i ran both and liked each.

Re: DX vs EX tranny.
 

my 95 civic... one of the least expensive things that i bought for it was a 92 si tranny vs my 95 lx.

nothing sucks more than not having a powerband, and then dropping out of it shifting from 2nd to 3rd. but i was never boosted on the lx, so it might not be too bad depending on the setup. i only paid 100$ for the si. if you can find it cheap its DEFINETLY worth it.

Re: DX vs EX tranny.
 

not always ;)

Re: DX vs EX tranny.
 

Ya if you have a nose-diving torque curve, then longer gears will be a benefit.


No, you select gear ratios that match the engine's torque curve and transient boost response. Then select final drive ratio and tire diameter for maximum speed.

Only thing is that in drag racing first to second split is not going to be the ideal case, since you start from a standstill.


It doesn't matter if you have a 200whp D or a 500whp D, an EX tranny is going to be faster.

Re: DX vs EX tranny.
 

DX trannies blow go search a dumpster for a SI one as I fired two mint ones into one a little while ago.

Re: DX vs EX tranny.
 

I pulled a lx trans for $60 at pull a part. For that price I can trash my transmissiom every weekend at the racetrack! 14 runs of wheel hopping madness!!!! Killed the bearings and drove it 35 miles on the freeway O0 Sounded like a metal lathe the whole way home!!!!! But it got me home, just rock what you can get for cheap!!!!!

Re: DX vs EX tranny.
 

I like the sound of that as well. I ended up getting a 98 ex to play with. Now its about putting together a turbo kit. Damm this engine needs some work though. Feels really tired. I havent done a compression test yet..

Re: DX vs EX tranny.
 

i have a video of a comparison of the dx and si tranny going up to 7000 rpm's and you can see the differance of aceleration between the two. once i fix my fucked up home computer i will host it somewhere and post it up.

Re: DX vs EX tranny.
 

if you want to run half a second slower the dx trans is your best bet

Re: DX vs EX tranny.
 

I would like to see this video if you have it yet.

Sorry for bumping old tread, but its not really that old and did not want to start a new tread for something that has been covered

Re: DX vs EX tranny.
 

I've had both dx/ex transmissions on my current setup and I ended up putting the dx back in.

Theres a local yard with prolly 10+d-series manual transmissions for $150 a piece, 3 of which are on z6's

Re: DX vs EX tranny.
 

ex/si over dx all day. had a hatch with a z6 and a dx tranny and a sol with ful z6 and it was so much better on the hiway, round town didnt see much dif but winding it out hoppin on the hiway so much better in the sol

Re: DX vs EX tranny.
 

what are you waiting for pull all 3 sell online. Make a couple hundred bucks easy for an afternoon of work.

Re: DX vs EX tranny.
 

I wouldn't pay over $200 for a good Ex, and I live in a frozen part of HELL called Wisconsin where Hondas fetch a premium.

Re: DX vs EX tranny.
 

DX is only good for hiway runs, the 3-4 shift is perfect.......other than that......no fun from a dig.

Re: DX vs EX tranny.
 

P20 B000 ftw!


as soon as i get my 300 buck 92 coupe running, im going to throw on the P20 A000 CX tranny on. I drive 40 miles one way to work and the gas mileage ill save over the 4.0L jeep im driving will basically pay to have the engine rebuilt in about 2 months time. if you can pick up a si/ex tranny for a fair price, then do it. you will be happy

Re: DX vs EX tranny.
 

I sell hydro z6/y8 trans for 400 shipped. Sold about 15 at that price is the last year or so.

Re: DX vs EX tranny.
 

So your gonna ride around in 4th gear on the highway????? CX/VX in 5th on the highway = worse gas mileage from the engine being below it's powerband.

Re: DX vs EX tranny.
 

yup went through that about 10 years ago. dohc zc swap+hf transmission=failure


Switched to a si transmission got back to low 30 mpg

Re: DX vs EX tranny.
 

interesting

but its not the highway, its curvy back roads. i ususally go about 50-55. wonder if that will make a difference. yea, im pretty much a honda newb.

Re: DX vs EX tranny.
 

cx/vx transmissions should never be used period on any motor your trying to make power with. Scrap metal

Re: DX vs EX tranny.
 

what about gas mileage? im talking about making a gas saving DD. assuming i take a stock d16z6 and the cx tranny i was assuming id still get over 30 mpg.

Re: DX vs EX tranny.
 

You will, it should work fine for that.

Re: DX vs EX tranny.
 

Well when I ran a dohc zc with an hf trans in my brothers crx 10 years ago basically same gearing has a cx I had nothign but problems. Car ran like ass and had major issues with the 02 sensor. New wiring/new sensors etc nothing but problems and it would occur within about 5 minutes of driving


Switched to si transmission. Cars o2 sensor problem went away right away never returned and car was getting low to mid 30 mpg. Then switched to a d15b carbed jdm motor converted to fuel injection,ported head,z6 manifold and si camshaft. Mileage shot up to high 30's running on stock 90-91 pm6 usdm si crx/civic ecu


I lived it already. You wont save gas mileage with that set up. The car will struggle to get up to speed causing way to much load and wasting gas and guess what the 02 problems I experinced back in the 90's has a teenager. I didnt have the joys of the internet and people telling me it was a ------ stupid idea. I had the joys of swapping motors/transmissions/gearing to find out honda got it right with the transmission gearing for the motors


If you want to save gas mileage get a wideband and lean out partial throttle cruise my buddy was getting low 40's with his high compression frankestein all motor vtec d series with get this with si transmission :y

Re: DX vs EX tranny.
 

53 mpg with a stock DX tranny on a D15B7, Z6 would get 46-47 mpg.

Re: DX vs EX tranny.
 

I agree if your going milage the dx is your choice

Re: DX vs EX tranny.
 

EX only 4% differnce in rpm in 5th gear though.......

but DX 1-2-4-5 shifting FTW :)

Re: DX vs EX tranny.
 

When I had a dx transmsision on my old zc I never did pay attention much to mileage hell it was like 1.50 a gallon so stealing my dads cans would cover my gas for a week