New '92 Civic DX (soon to be VX)
 

Hello all! I joined a few weeks ago...I just bought a '92 civic HB DX (couldn't find any non-riced VXs in the area) w/ 155K miles for $2,500 - still runs great!

*I commute 70 miles RT daily...so this should pay for itself in 3 yrs w/ the gas $$ I'll be saving.

first full tank of gas:
381 miles on 9.855 gallons --> 38.7 MPG (90% freeway, going around 70 MPH)

plans:
-VX engine swap w/ modified head?? (engine is on the way)
-VX rims (on the way)
-aero stuff (front air dam, under body paneling, wheel skirts,...)
-I'm planning 50 MPG and hoping/aiming for 60!

pic:
https://www.fuelly.com/attachments/fo...d5717e816a.jpg

I've picked up a lot of great info here...hope I can continue to learn and possibly give back some too.

*I'm mainly into racing/autoXing cars, so this car project is a little different, but still loads of fun for me.

May I ask, what are you planning for head modifications on the d15z1?

And congrats on picking up the DX, you'll like it.

I plan to shave it to increase compression for FE...I'm having a little trouble finding good info on what kind of compression ratio to aim for that will still allow me to run 87 octane, but at least 1 person is saying 10.5...so I'll probably aim for 10 to be a bit conservative.
https://www.civicforums.com/forums/18...on-ratios.html

I'll do all the other easy stuff too: smooth out casting lines, port match,...I had thought of increasing compression by going w/ longer rods (you can usually get a higher compression ratio w/out detonation this way), but opted not to b/c I'm trying to keep costs low.

-Peter

nice i might have to copy you when i do my swap! lol where did you get your motor from?

$400 shipped to my door from:

JDMSOURCE
www.jdmsource.ca
1 866 717 4252

I don't know how a VX would react to higher compression. With it already burning lean, and higher compression that it has, I'd imagine the motor wouldn't last very long. Though I really don't know.

I'll have to check out your other thread you linked to.

Welcome to the board!

Good luck on the swap and congrats on your new whip!!

Make Sure you have the right tranny
 

Welcome another new VXer to the boards. I believe for the EG Civic, the CX/VX had the same gear ratios with a very tall final drive ratio, the LX/DX had shorter gearing and the EX/SI had the shortest, sportiest gearing. I think in order to truly have a VX, you need the motor, ECU, 5-wire Oxygen sensor and correct tranny. All these parts should be available, tho.... good luck!

Doug

thanks for the list :thumbup: - I have the same list of "to buy" parts for the DX--> VX conversion...at this point, I'm only missing the tranny:
-Engine is being shipped and has the header/O2 sensor/EGR
-wheels are on their way (i plan to run taller/thinner tire if I can find one...so the final ratio will be even taller!)
-ECU will be picked up this Sat (I'll need to add a few extra wires for the Vtec/O2)
...now I just need to find a 5 sp VX tranny.

I"ll probably have a load of questions once I start getting all the parts and begin the swap:rolleyes:

Out of everything in the VX swap, the tranny (which either shoudl come from a cx or vx) will make the biggest difference in MPG. Make sure you find one with a good input shaft bearing (you can somewhat check it by seeing if it has any up/down play) or plan on getting it replaced before installing it.