the bung in the back of this b18a, right above the oil sending unit is drilled and tapped for something. there is the same casting in my old b18b but it was solid and not drilled. what i need to know is if i need to plug it, im sure i will. and what size plug do i need to use?

 

looks liek someone must have taped it to put a Knock sensor in it same size . .


BTW u donthave to plug it u just haev a spot for ur knock sensor unless u chipped ur ECU with out one


Modified by Smoke_em at 9:38 PM 3/8/2006

 

yep, that was for a knock sensor. looks like that block was part of an LS/Vtec swap. The non-vtec b18's did not have knock sensors.

 

so what do i use to plug it up?

 

nothing should not harm it . but if it will make u feel at ease put ur b16 knock sensor with out pluging it in

 

there isnt coolant or oil or brake fluid or tranny fluid or gas or washer fluid or blinker fluid running through there?

haha thats all the fluids i could think of in a honda

 

oh yeah power steering fluid but i dont have p/s

 

lol no there should'nt be. the knock sensor doesnt dtect fluid so is shouldnt have been taped all the way in . knock sensor good for abnormal engine vibration . detonation pinggin Ect ect

 

that port is for the coolent temp sensor. on non-obd engines it's on the back of the block instead of the thermostat housing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Davep &raquo;</TD></TR><TR><TD CLASS="quote">that port is for the coolent temp sensor. on non-obd engines it's on the back of the block instead of the thermostat housing.</TD></TR></TABLE>

+1, the knock, if there was one, would be above the water pipe

 

so is it the knock sensor or the coolant sensor?

 

it's the coolant sensor

 

Coolant sensor.

Also, i highly recommend running the oil line to the head off a sandwich plate in between the filter and the block instead of the tee like that.