I am getting ready to swap a 1.5L SOHC 102HP out of my 93 Del Sol and replace it with a 1.6L JDM Spec SiR-2 DOHC 170HP, but the harness is cut off because of the LH/RH issue. I want to purchase a custom harness for the swap.....can anyone help?

 

just use your old 1.5 harness. dont cut any wires off of it.. and it you should be ok
just stick both motors on the ground side by side, you may have to lengthen some wires, like TPS and MAP (maybe) but they should all plug right in, you might have to add like 4 wires, they would be: Knock Sensor, Vtec Oil pressure (2 wires), and vtec solenoid (1 wire). adding four wires is a lot cheaper and faster than spending 250 bucks for a harness you dont really need
good luck

 

thanks for your suggestions, do you know where i could get a wiring diagram, my helms manual got lost in the mail about two weeks ago now.

 

well, I dont have a scanner..
You really dont need one. like I said, just take both motors, or better yet, when you pullyour 1.5 out, take some masking tape, and write on each plug where it goes.. example: TPS, MAP, IACV, injectors, etc.. the dohc motor is just like the sohc motor, except for vtec, and the knock sensor, everything else is exaclty the same, only the length of the wiring is different.
its really simple.
the knock sensor is on the back of the block betweeen #1 and #2 pistons, small sensor, you need a 27mm deep socket to take it off and it has only 1 wire coming out of it. (its an actual plug, not just a simple push on wire)
the vtec solenoid is also 1 wire, and its grn/yel. the vtec pressure is right next to the solenoid and has two wires from it, one you ground to the block and the other you send to the ecu, just 4 simple wires that some shops charge hundreds of dollars for..

as for sites, you might try this one..

http://www.hybridforums.com

and do a search there

 

and dont forget about the 2nd O2 sensor. thats one wire also, on the exhaust manifold

 

there is no second o2 on obd1. also, JDM engines don't have vtec oil pressure sensors so when you can't find that, don't worry, it ain't there. as long as you are using a JDM ECU, you'll be cool. if you don't have a JDM ECU for some reason, you can probably get a chip or just trade someone for one.