Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - 1997 Civic CX to HX engine/VX trans swap! 63 MPG @ 62 MPH

Ni87 · 12-05-2017, 05:42 PM

Hey so I have a 1998 civic si 5 speed. Which is basically the American civic dx, so I've heard. It's the two door with the d16y8. The highway rpm isn't so bad. I think at 60mph or 100kmh the Rpm of the engine is close to 2600-2800 I think. I'd have to check again. But I see you were using a vx transmission. did you have stock tire size when you were getting 2000 rpm @ 60mph? I have to change the transmission here soon and if I could get a transmission that gets a me a taller 5th gear I'd be pretty happy. Even if you know of a transmission that would drop me down 200-800 rpm that would help me out greatly.

12-05-2017, 05:42 PM	#183 (permalink)
Ni87 EcoModding Lurker Join Date: Mar 2017 Location: Alberta Posts: 30 Bernard - '00 Nissan Xterra Se Super civ - '98 Honda Civic Si (aka dx) 90 day: 47.57 mpg (US) Thanks: 5 Thanked 1 Time in 1 Post	Hey so I have a 1998 civic si 5 speed. Which is basically the American civic dx, so I've heard. It's the two door with the d16y8. The highway rpm isn't so bad. I think at 60mph or 100kmh the Rpm of the engine is close to 2600-2800 I think. I'd have to check again. But I see you were using a vx transmission. did you have stock tire size when you were getting 2000 rpm @ 60mph? I have to change the transmission here soon and if I could get a transmission that gets a me a taller 5th gear I'd be pretty happy. Even if you know of a transmission that would drop me down 200-800 rpm that would help me out greatly. Last edited by Ni87; 12-05-2017 at 05:59 PM..