they would fit but your car would run rich because the 90 prelude is a 2.0 the other one is a 2.2 or a 2.3
yes
does a 1990 honda prelude 2.0 s.i have a pilot bearing
http://www.modifiedlife.com/1990-honda-prelude-car-radio-stereo-wiring-diagram/
No, the third and fourth generation are a different Chassis.
show me picture of where the water pump is located on 1991 Honda prelude si
no
6.5"
It's hard to say, as the question didn't specify what kind of solenoid are you attempting to fit, and the 1990 Prelude had a mid-cycle refresh which included an improved motor.
the fuel rail
NO, they have two completely different motors.
about 135 140bhp
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