Technical Topics specific to the Hatchback body - NOT where you post pics/build specs of your car.
By ontheroad
#57389 Hello guys and gals. First post here! I drive a '97 540i 6-speed on a daily basis, but my new job will require me to drive significantly more than I do now. And with gas over $4 (and possibly over $5 by summer's end) I want to hedge my bets with an EG.

I've found a DX EG locally with a blown motor and a manual trans for $1000. I'd really like a VX or HX, but they're exceedingly rare and those that do exist are already overpriced.

I was thinking about swapping in a D15Z1 into this car, but wasn't sure how well it would work out. Mechanically (will the Z1 bolt up and work with the DX manual trans)? Electrically (will the VTEC-E be actuated properly, etc)? How will fuel efficiency compare with a real VX? I'm pretty mechanically inclined and have many technician friends (they all work at various German-brand dealerships in the area).

My goal is a high-effciency commuter that handles VERY well and is quiet enough to be able to comfortably use the phone/GPS and listen to music in.

I tried a search, but didn't really net anything.
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By biretsu89
#57404 If you want max fuel efficiency.. you should use the trans from the Vx. The Vx trans has long gear ratios to say low rps. The Vx vtec also is different that like an Si vtek... its more for fuel efficiency.

To answer your question... yes .. the Vx motor will easily just bolt on to the Dx trans. To have your vtec work properly.. you need the vtec and Ecu from the Vx. To do what you want mechanically is extremely easy. The hardest thing you will have to do is a 5 wire o2 sensor swap. The Vx uses a 5 wire O2 sensor :lol: ... One of the most import things for the fuel economy on the vx though is not just the motor but the alloy wheels. The Vx came with 13inch alloy wheel made by Enkei. They weigh about 9lbs ( not joking )

I have a Vx civic. My ride handles decent and is extremely comfortable. I am running on vogtland springs ( 1.5 in lower) and Kyb Gr-2 shocks. I put new speakers in with a new head unit. ( sounds great ) Also, the Vx muffler is EXTREMELY Quiet! Its so quiet that I will easily do 85 miles per hour because I am not paying attention to the Rpms because I cant HEAR them.X_x .... I am doing a d16z6 motor/trans swap in my Vx. When I perform the swap and you still havent found your motor your lookin for, I could sell you my Vx motor and trans and what not so you can have EVERYTHING. :thumb: If you have any other qustions.. just ask