Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - 90 Civic Dx motor vs. Si motor for daily driving vs. 96 CX

sevenspeed · 08-25-2010, 11:05 AM

Okay I found a mint 90 Dx that looks good and has the dual port injection motor I think a D15, I know the transmission is geared better for economy then my Si transmission, but I was wondering if I should swap my motor into it if I get it. Mine is 108hp and if wikipedia is right the d15 hatchback is 70hp.
Also being a lighter car how do they compare to a 96 CX hatchback which appears to have better gearing. 90 DX is listed at .771 5th, 3.888 final, my Si is same 5th but 4.25 final. And Cx is .702 5th 3.722 final CX hp is also 108.

The Cx has some honda rot but hopefully not too bad, the 90 Dx looks mint with body kit so maybe better aerodynamics.

08-25-2010, 11:05 AM	#1 (permalink)
sevenspeed EcoModding Lurker Join Date: Nov 2008 Location: Parma, MI Posts: 38 Thanks: 0 Thanked 0 Times in 0 Posts	90 Civic Dx motor vs. Si motor for daily driving vs. 96 CX Okay I found a mint 90 Dx that looks good and has the dual port injection motor I think a D15, I know the transmission is geared better for economy then my Si transmission, but I was wondering if I should swap my motor into it if I get it. Mine is 108hp and if wikipedia is right the d15 hatchback is 70hp. Also being a lighter car how do they compare to a 96 CX hatchback which appears to have better gearing. 90 DX is listed at .771 5th, 3.888 final, my Si is same 5th but 4.25 final. And Cx is .702 5th 3.722 final CX hp is also 108. The Cx has some honda rot but hopefully not too bad, the 90 Dx looks mint with body kit so maybe better aerodynamics. __________________ 1987 Mazda RX-7 Turbo anti-eco modded 15mpg E85 300hp laptop programmable EFI 1989 Honda Civic Si-temporary "beware of dog" grill block 29mpg winter (last tank before grill block and stock underbelly pan was off b/c of quick coolant change)