Converting CRX to CRX HF help please

I dont want my crx to be fast. I dont need to go fast what I need to do is save on gas on a daily long drive. So what exactly do I need to convert my regular CRX to use the fuel setup and ECU from a CRX HF?
What are the main differences between the engine setups? I know that the CRX HF is a lighter car by a few hundred pounds but there isnt anything I can do about that part.

well the first major step is that its a different motor, swap that out first along with the ecu, those light rims and your halfway there, also dont forget that most of the suspension would need to be changed as its not the same on a hf as it is a dx or si. in the long run it would be cheaper to just go out and find a hf model, or like a gx civic.

That is definetely a first!

But yea get the 8valve motor, and ecu and you should be good to go.

won't save much gas if that iddy biddy engine is pulling that heavier body.

i agree with the opinion that you should find a whole HF and fix it up.

i had an old 1st gen crx hf model back in the day, and, honestly, in its ripe old age, it got the same gas milage that my 2nd gen crx DX is getting. roughly 35 - 38 mpg.

i'd probably do better if i knew more about engines and had the tools, time, and extra vehicle lying around to be able to rebuild everything.

Other than selling it and buying an HF, u can always swap in an HF tranny, it will def help your long drives on the highway, u wont be way up 5k RPMs @ 60 MPH (If its an Si that is)... Will save alot of gas that way...

Part of it is the tranny too - I've actually gotten 38mpg on the freeway with my si engine doing 80 the whole way with that tranny. Those high high gears help on gas mileage as long as your foot isn't heavy. Most of the 88-91 honda motors will get good gas mileage with just shifting earlier and leaving your lead foot at home.

leaving your lead foot at home.


But its just so hard! :lol:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6255&item=4549411378&rd=1&ssPageName=WDVW theres a clean HF for decently cheap.

just shifting earlier and leaving your lead foot at home.

if i do that i dont get anywhere, dpfi sucks

It's all about tuning. I have an Si and due to mods I cruise at 80mph at around 4300 rpms but I still get 35mpg. Why?... because some mods just make my car run more efficient.. lightweight pulleys, flywheel, i/h/e etc. Nice tight clutch and accelerator cable and I'm barely giving it fuel but my car goes...

just the trans would make a difference. Do a multi-point swap, that makes a big gain (even to an Si manifold). Then get a SAFC and lean it out a lil bit (actually a bad idea).