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Such a sad day when people think SOHC's dont have any potential... OK what makes a DOHC VTEC motor fast? Can anyone guess? Well, first of all, they aren't THAT MUCH FASTER. The 106hp 96 Civic DX does a 16.7 1/4 mile when the 00 Civic Si does a 15.7 with 160hp.
THERE IS PLENTY OF POTENTIAL IN SOHC MOTORS!!!
THERE IS PLENTY OF POTENTIAL IN SOHC MOTORS!!!
Granted, if your money is limitless, obviously your going to get an H23 resleeved to 2.5L and throw a VTEC head on with a turbocharger. Not everyone's money is unlimited.
There are three basic things that set the SOHC and DOHC VTEC motors apart; Agressive cams, High-Compression Pistons, and Close-Ratio transmissions.
1) Cams: There are plenty of aftermarket cams available for SOHC motors, thanks to Gude, Zex, and soon Skunk2. If you have an SOHC VTEC motor, you even have more options. I've seen cammed SOHC motors hang with DOHC VTEC motors all day long. It's not rocket science, its simple engineering.
2) Pistons: There are multiple, I repeat, multiple pistons you can swap into this motor to raise the compression, including Y1 pistons. Pistons with Cams will get your horsepower figures up near that of a DOHC VTEC if your starting with an SOHC VTEC.
3) Trannys: Late-Model 96-00 EX transmissions have fairly close ratios, along with the EG Civic Si transmission. Slap one of these on your DX motor and shave a substantial amount of time off your E.T.
Just remember, anytime you work with a motor, your dealing with tuning and research. TUNING AND RESEARCH, the most vital parts of building your motor.
Anyway, im done preeching... Hopefully I helped some of you reasonable people out!
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