CRX HF 65 MPG: Bogus?

[nemo_wolf]

Originally Posted by riceriderjade

hhaha, i'm serious, take a crx, tune it to be incredibly fuel efficent

so am i ... only i have a hatch but id be willing to try some stuff ...

[alexdog69]

well... u should be able to get a mileage increase just going to a taller tire... as it will make your gearing taller... slower acceleration but lower RPM for a given speed...

however... i dont know how much extra MPG you can expect squeeze out of a honda like ours... depending on what type of engine you have....

the reason why i say this is that there is a page that probably many of you have seen..describing the ZC/Si hybrid trans...and the guy in question ended up trying something like 3 different 5th gears...and he put some miser gear in for 5th... said the gap between 4th and 5th sucked...it dropped his RPMs way too much... and (here is the kicker)... his MPG didnt change worth shit....

u can always swap in a HF drive train he he ... it seems that honda had to make some pretty drastic changes in order to squeeze out that insane mpg figure... gearing... mpfi with a really crappy ass cam to match the gearing.. and a 8V head... and its probably tuned to run pretty lean...

if you drive in a conservative manner... somewhere in the neighborhood of ~35 mpg should be very easy on almost any of our cars...

does anyone really need much more so bad that its worth killing the performance of the car ?

oh well..anyways..enough speculation...the HF does prove however that if you do some somewhat drastic tweaks that insane MPG is very possible.....

by the way... if im not mistaken, the name sake of the Civic is the old no longer used CVCC engine design... aka "Compound Vortex Controlled Combustion"... aka charge stratification....
where the main intake valve would let in the regular fuel mixture...which was set up to be extremely lean... so lean that the car wouldnt run properly on it...but there was a significantly smaller valve located as such that a small portion of rich mixture could be placed near the spark plug.... giving an uneven distribution of atomized fuel ... allowing it to ignite the rich mixture around the spark plug and burn off the rest of the surrounding lean mixture... causing the car to run normally despite the otherwise too lean mixture... producing lower emissions and much higher gas mileage....

[alexdog69]

and by the way the late 70s early 80s CVCC engines managed to run very low emissions WITHOUT a catalytic converter... due to this clever design by Honda...

Some of the Honda engineers sure are geniuses...

[jhman2002]

I just got the honda crx hf and tracked a trip of 191 miles from wilmington nc to graham nc and put in 2.754 gallons which meant that i got about 68 mpg. granted i was driving 60-65. but on average if i go 70 then i only get the claimed 50 mpg

[BLU CIVIC]

it's possible with a conservative driver


btw...last post was over 5 years ago

[n_i_c_k]

not bogus at all. neutral as often as possible, keep it at 2000 rpm, don't idle.

[Tony]

Dead thread

[FrodoGT]

Aww man, I was all ready to blow this out of the water with epa mpg figures and ecomodder shtuff...


Oh btw, HAI from never never land! Been a long ass time.

[Christ]

Originally Posted by FrodoGT

Aww man, I was all ready to blow this out of the water with epa mpg figures and ecomodder shtuff...


Oh btw, HAI from never never land! Been a long ass time.

Have you actually registered on EM? I haven't seen your nick on there...

I'm the asshole trying to break 30 MPG in a Caravan lol. (Same SN there and here.)

[302NOVA]

All of my five CRX-HF's got 50 miles per gallon with good tires and a good tune free running breaks. One summer my 1989 HF got in the upper fifties average I think the oxygen sensor was reading wrong and giving me great gas mileage. If the car is in perfect condition the right good tires not new no drag or problems I believe with the right computer chip modes the Hf will get 65 Miles per gallon under perfect conditions. The car is the best gas mileage car ever made don't laugh at it love it we need Honda to build them again for us I would buy a new one in a heart beat I've driven my five close to 800,000 miles total combined miles. They are for real!! I have enough parts to keep mine going for a long time!!