worn out civic hx - Fuel Economy, Hypermiling, EcoModding News and Forum

98hxman · 07-27-2016, 12:24 PM

so i started to try to employ some of the driving techniques from the sight in my worn out 98 civic hx with over 300k on it and super low compression befor i put in my new build im doing and i have seen a good return. i went from a avg of 29mps to 36 avg!

Xist · 07-27-2016, 01:58 PM

How were you driving before?

98hxman · 07-28-2016, 02:49 AM

like a kid lol

California98Civic · 07-28-2016, 08:48 AM

your new build will be replacing the stock engine? or something else?

98hxman · 07-28-2016, 01:36 PM

replacing the stock engine. the compression numbers are way under oem honda speck. i had around 120psi on each cylinder and min is 135psi.i came buy a good d16y5 head at pull a part and got it for a good price.so i decided to build something with economy in mind. and this is what i came up with. im still on the fence about the transmission but may go with a honda vx or even the stock hx trans. im shooting for avg 40mpg with mixed driving and would like to see the old epa numbers of 38 city 45 hwy. i have read that the vx trans will net 1800rpm at 60 mph and net around 60 mpg hwy. ?

98hxman · 07-28-2016, 01:43 PM

im going back to a factory exhaust also this weekend if i have time. the exhaust thats on the car is not what it needs. rightnow it has a 4-1 header with a cat and 2.25 with a 09 civic muffler. it sounds good but has taken away alot of low end torque!

Baltothewolf · 07-28-2016, 01:51 PM

I wouldn't go replacing the head without making sure it's the valves and not the Rings that's the problem. If it's just worn valves, I would recommend a good valve job. It will probably cost more but you will have a basically brand new head and not one with miles already on it.

98hxman · 07-29-2016, 01:26 AM

im not just replacing the head sorry if that what i made you think. i rebuilt the engine top to down.

Baltothewolf · 07-29-2016, 02:34 AM

Quote:

Originally Posted by 98hxman

im not just replacing the head sorry if that what i made you think. i rebuilt the engine top to down.

Looks great! The only two things I would have done that you didn't was wrap the exhaust with heat wrap (makes the catalytic converter warm up faster) and painted the crank pulley black or blue to match the valve cover.

California98Civic · 07-29-2016, 08:36 AM

How long has the clear cam pulley and timing belt cover been on the car? Looks new. I am curious about clouding over time.