larson.joshua@gmail.com wrote:
> Like my subject says, I'd like to swap a D15B2 USDM with a D15B JDM
> motor. From what little I've found, this JDM motor can go into my 91
> Civic DX, but I must use my throttle body, intake and exhaust
> manifolds.
>
> All I want is a replacement motor. I don't care about going fast and
> furious, I just want to take out my blown original and get my car
> back.
>
> There's conflicting info about the D15B that causes me to be a bit
> wary, however. Some say it is a VTEC motor with substantially more hp
> than my D15B2 (90hp vs 130hp). If it is VTEC, how will my ECU be able
> to run this motor. It's also supposedly MPFI, whereas my current
> motor is DPFI. These differences are pretty steep in my book and I'm
> trying to figure out if these motors are similar enough for a direct
> drop-in.
>
> If anyone has any information I'd really appreciate it!
>
> btw - the following link is the company I'm considering buying the
> motor from:
>
> http://www.nippon-motors.com/honda.htm
>
just call and make sure you order one that's year appropriate if you
want stock replacement. the vtec will disappoint if you're not going to
connect the gear to run it since the cam will be in "low performance"
mode all the time. if you /do/ want to run the vtec, the electrical
conversion is doable with the help of the folks at boomslang, but imo,
it's still non-trivial. but the motor drops right in.