obd1 to obd2 dizzy conversion
 

Ok heres the deal, ive got a 97 prelude sh that i race on the local dirt track. Spun a bearing in the original motor and found a jdm h22 for 200 bux so i swapped it in. I got the motor in and everything plugged up but no spark or fuel and im guessing thats cus theres no crank angle sensor, thing is this motor didnt come with one. Ive got the car converted to obd1 and have an obd1 dizzy so is there a way to use that dizzy and get away without using the crank angle sensor? Is there a diagram on how to wire the obd1 dizzy into the obd2 harness? All suggestions are welcome. Id really like to rewire if i could instead of taking the whole buttom end apart and changing everything for the crank angle sensor.

Re: obd1 to obd2 dizzy conversion
 

FACTORY Engine Harness Distributor Wire Colors
OBD0 OBD1 OBD2 Function
Orange Orange Dark Blue CYPP
White White White CYPG
Orange/Blue Orange/Blue Green TDCP
White/Blue White/Blue Red TDCG
Blue/Green Blue/Green Yellow CKPP
Blue/Yellow Blue/Yellow Black CKPG
Large White Yellow/Green Yellow/Green ICM
Black/Yellow Black/Yellow Black/Yellow IGN Output
Blue Blue Blue Tach Output



taken from boomslangs website. use at your own discretion. ive never tested/used this diagram.

Re: obd1 to obd2 dizzy conversion
 

now do i use the wires from the plug that would go to my crank angle sensor since there are 4 wires there? Can someone explain how a motor without the crank angle sensor works? And what i am tryin to do is possible?

Re: obd1 to obd2 dizzy conversion
 

it needs some kind of rpm signal (ie- something reading the revolutions of the crank shaft)

U can swap the oil pump from ur OBD2 motor to ur obviously OBD1 motor. and keep it obd2
OBD2 prelude motors have the crank sensor in the oil pump
OBD1 prelude motors have that sensor in the distributor.

Re: obd1 to obd2 dizzy conversion
 

i used the obd1 dizzy and wired the 4 extra wires to the dizzy and it fired right up ;D

Re: obd1 to obd2 dizzy conversion
 

sweet sugar its alive

are the wire colors provided accurate?? this could be for future reference for others

Re: obd1 to obd2 dizzy conversion
 

to solder the OBD2 connector to the OBD1 dizzy:

connector------------ dizzy
green-----------------green
yellow/green---------yellow/green
black------------------white
yellow-----------------orange


then there's gonna be 4 more wires comin off the OBD1 dizzy, which get extended down to the TDC and CKP on the oil pump (again, i cut the bottom connector off and soldered them):

OBD1 dizzy------- OBD2 TDC & CKP:
blue/green----------blue
blue/yellow --------white
orange/blue--------green
white/blue----------red