Their a connection/sensor plug on the back of the block. Its a 1 pin clip, below the intake manifold but above the fuel filter... any idea what it is?

also the sensor directly next to the oil filter...? is that the knock sensor..?

thanks for any help..

this is a b18c1.

 

are you going obd1 to obd2? I will be doing the same thing very soon. I'm curious as well ...

 

if your swapping the gsr motor.
you need to run vtec/knock sensor which is under the IM, and secondary runners if you are planning on keeping the stock IM.

 

sensor directly next to the oil filter is oil pressure sensor

 

what are those supposed to be run to? thanks!

 

not to jack this thread but im also doing the same swap in a 91 integra ls and i plan on going obd1 my question is since all i got with my motor was the block full internals and the head full internals but i dont have the alt, start, a/c compressor, power steering and al lthe other external stuff my question is can i reuse all my ls parts on the gsr and also do i use my ls wiring harness since i dont have the gsr harness i know i have to get a jumper harness for obd1 and i know i have to run wires for the vtec and knock sensor but does everything else convert over like my other sensors from my ls and things like the altenator and ac and power steering