95preludeSESI

I have a 95 Honda Prelude Se came with the stop H23a1 motor. Swapped that with the H22a motor and ended up throwing a rod through the block. So now i'm thinking about doing an f20b swap in the prelude. Now i know i need a new ecu and i know that the tranny will bolt up so i don't need that. but my question is will i need a new wiring harness (obd1<h22> to obd2<f20b>) or can i use the h22 wiring harness. Also any other tips would be greatly appreciated.

jsmooney

you will have to get a obd2 to obd1 conversion harness since the 20b is a obd2 motor

edludesi

i would keep the h22 if i was going n/a
but thats just me ha ha
good luck with ur build

95preludeSESI

well actually a built H22 is still an option. I still have the h23 block so im having it looked at cause i spun a barring in it so im just making sure everything is alright but if it is good the plan is to put performance h22 crank, rods, connecting rods, and pistons (pretty much full internals) in the h23 block and put the h22 head on it cause the head is still good. but im just keeping my options open and looking at everything.

edludesi

good luck with it bro
sounds complicated ha ha

95preludeSESI

in all actuality it won't be that bad to do i believe its called the g23 frankinstin or something along those lines. It will be fun either way no matter what i do. its the second motor iv pulled in this car in like 6 months haha
but working on the lude never gets old

jsmooney

I enjoyed working on the prelude - easy to work on and either it worked or it didnt. OBD1 > OBD2

edludesi

yeah so true I just finished getting my interior back to stock
it was all messed up when I got the lude n my moonroof didn't work but it's all good now thankfully

wish I knew how to do all my engine work