Last night after I got off work at 4pm I pulled the motor and tranny out of the 91 SI and out of the 88 HF put the 91 SI motor tranny ECU into the 88 and pluged everything up and it wouldnt start. Came on H-T and found that the SI harness has the same wires just diffrent pins :*( We pulled the engine harness off the hf motor and swaped it with the 91 engine harness. Runs so good. No Check engine light IDLES awsome. Pulls hard. Some valve noise but I think it just needs adjusting. We stayed till 2am getting this running and it was well worth it.

D16a6

my question to you guys is...is there anything I can do to up the peformance I do not know SOHC cars very well. I do not mean IHE either I am talking internals and all that good stuff.

I have a freind who wants to sell me ZC pistions mounted to Z6 rods for $100 He said it should put the compression to 11:1

Please give me all INFO you guys can come up with.

 

ok first you have to use the hf harness with the hf car eevn if it is a si motor in it. So i hopes thats what you did. Always use the harness from the car that motor is going into. Second I would see about some je pistons. Best bet would a be putting a y8 head on it. That thing would be awesome. I have been told that a low 14 second pass is easy with a y8 head or z6 and i believe it. I ran 14.8 with a stock d16a6 in my car. I think 20 more horse should give that car a low 14s pass. Pistons would help...but i think the head would be a better swap. Then convert to obd1/2 and also check into milling the head if you want to bump up compression.

DEF

 

definatly convert to vtec it worth it