Civic-EG.com Forum 3.3.1

- Sat Oct 18, 2008 5:28 pm #74856 Well I have always been a domestic kind of guy, but recently I got tired of working for 2 hours a day JUST to pay for the gas that got me there and to get back home. I own a Z28 and 17 MPG on premium gets costly, especially since everyone I see or everywhere I go is at least 20 miles away.

I just started working as a vendor again, and that means a LOT of driving. So I picked up a 92 civic hatch that is all stock besides some crap that someone has added to it that is WORSE than stock. I get about 37 MPG in it, still getting used to it after driving my Z28 for so long, and my first trip on the job was a 950 mile drive to NH. I made about $400 in profits in gas just because I picked up this car on that one job so it's going to pay for itself. And every trip, the profits that I get in gas are going into funds to fix the car up.

The only problem, besides the exhaust which will come on another thread after I get done with this one, is how weak the car is stock. It may be that I'm just used to 350 HP, but this car is rated around 95. So I was wanting to see about other engines to put in the hatch and my brother was telling me about b16 lineups. So I found this site, and decided to come and ask what kind of mileage these engines give when put in a 92 civic hatch. I already have plans for some mods to get it to almost 50 MPG on the highway, but I'm afraid that the engine swaps to give more power will only decrease the MPG so much that it takes away the whole purpose of getting the car.

So after that long intro, what excactly should I expect to get out of the mileage after putting a b16 in the hatch? I believe I looked up the mileage of the Integra and they got about 25, so a few hundred pounds lighter weight doesn't seem like enough to boost it up to even 30. And if I can't get at least 35, I have no use to even swap.

- Sat Oct 18, 2008 6:50 pm #74869 I would go for a D16Z6 out of the Si or EX. It'll put you at around 125hp, on 87 octane, with over 35mpg with spirited driving. There's also tons of parts available.

- Sat Oct 18, 2008 8:02 pm #74876 But that's only about 30 more HP. Unless the torque is more than 30 that just doesn't seem worth the money to me.

I could go get an exhaust, cold air, and a few other bolt ons and get that same 30 extra HP with an INCREASE of mpg.

But hey, I could be wrong. This is the first import I've ever owned and actually looked stuff up for.

- Sat Oct 18, 2008 8:22 pm #74878 Well really power=petrol(gas)


If you want to keep the eg for getting to jobs and back then do that don't get more power and end up loosing money from your jobs because of petrol...

I smoke my own meat!

lulz...

- Sat Oct 18, 2008 9:33 pm #74893

Well really power=petrol(gas)


If you want to keep the eg for getting to jobs and back then do that don't get more power and end up loosing money from your jobs because of petrol...

he is right. Just make sure you regularly service the car, inflate tires correctly etc. with all power comes more petrol. I have a B18c4 in my EJ2 Coupe. My full tank costs around £35 which is roughly 35 litres. On a long drive I will get 38 mpg. I have a larger inlet manifold and a dry foam air filter, and a big ass exhaust lol But with sensible driving meaning keeping to roughly 70 mph I get good mileage. |I have a Crome stage1 map on my ECU also. All depends on the condition of the engine too, my engine has roughly 35,000 miles on it and crankin up

- Sat Oct 18, 2008 10:19 pm #74922

But that's only about 30 more HP. Unless the torque is more than 30 that just doesn't seem worth the money to me.

I could go get an exhaust, cold air, and a few other bolt ons and get that same 30 extra HP with an INCREASE of mpg.

But hey, I could be wrong. This is the first import I've ever owned and actually looked stuff up for.

Hate to break it to you this way, but you will not get 30 HP from those bolt ons. This isnt the domestic market.

1986 Nissan 300zx
1980 Kawasaki KZ650
2014 Kawasaki Ninja 300

- Sun Oct 19, 2008 6:49 am #74977 yeah, honda's OEM shit is actually decent

[suspendedHatch]

- Fri Nov 14, 2008 4:06 am #78573 Best bang for your buck keeping inline with good fuel economy but never being satisfied because of the lack of power would be to build a D series. The D16A6 (88-91 Civic Si (non VTEC)) is the best platform for all out max power, but the D16Z6 (92-95 Civic Si (VTEC)) is the simplest for your chassis and great for daily driving.

You can easily/cheaply turbocharge the D-series which gives you the best of both worlds. Light throttle driving will keep you out of boost so you'll have your stock fuel economy; if not better. Then when you need the power or you just want to rail on it, put the throttle down and let it rev enough to boost.

Another option which will cost much much more but give you some serious power and still maintain good (but not excellent) fuel economy is to get an OBD1 B16 and put some high compression pistons in it, preferably Endyn. Endyn also claims to increase power/mpg from his headwork. Bumping the compression increases your fuel economy but it does require 91 octane which costs more. Total monthly fuel cost should be about the same or better than stock compression/low octane.

Here's another idea: convert to E85. It's much cheaper than gas but your fuel economy suffers a bit so you just about break even. It takes a larger volume of E85 compared to gasoline so you have to increase fuel flow. BUT, E85 has a higher octane rating so you can get away with higher compression which in turn will increase your mileage. I highly recommend some good engine management like the AEM EMS but not before finding a good tuner.