dartonh22

my brother just bought used b18c1 from a local guy and we found a threaded hole right behind the dipstick, if we pour coolant into the radiator hose going to the head it leaks out this threaded hole, does anyone know why somenone would thread a hole here?

dartonh22

inspyral

From the pic it looks like it was drilled and tapped. It may have been used as a port for a water-cooled turbo, or if it gets below freezing where you are, it may have been used for a block heater.

edit:
I thought most block heaters used the coolant drain plug on the front of the block though, so that still seems kinda weird.

dartonh22

yeah i really dont know why its there, but does anyone know how to pull out the oil dipstick tube, its in there really tight

havok hybrid

Just put a threaded plug in there.. Shouldnt be to hard to find local.

dartonh22

yeah but i need to pull out the dipstick tube and cant

philafelman

the dipstick just pulls out..it has a rubber seal in place...you might have to put a lil elbow grease in it though.

93supercoupe

ur only going to ruin the tube, which can come off any bseries, so just get it off.

urbansi

i love how people think that the dip stick tube just pops right out, they are press fit in from the factory, the best and really only way in my eyes is to remove the oil pan and put a 10mm socket end to it and slightly push it out. And most of the time when you put them back in they are going to leak. just a little FYI

coneheadsracing

on the d-series they pretty much come right out, might have to work it back and forth a little. And, never had one leak when i put it back in either.

Turbo-charged

ive seen a few people mount coolant temp sensors there (for like an autometer gauge) why in the hell they do it like that, i will never know....

Legion

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by urbansi &raquo;</TD></TR><TR><TD CLASS="quote">i love how people think that the dip stick tube just pops right out</TD></TR></TABLE>

I pop mine out all the time. It's only held in with a rubber o-ring.

Perhaps blanket statements aren't always the best approach to giving useful advice?

urbansi

maybe for some crazy reason its easier to remove them from d-series motors, who knows i dont work on those motors. Everytime i have tried to remove them from a b-series motor its a complete pain in the ***.

dartonh22

turbo-charged: was the sensor in the same spot or close to it?

Brain3208

Its probably a feed for a water cooled turbo. i've seen them done with the freeze out plugs but never directly on the block like that.

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by urbansi &raquo;</TD></TR><TR><TD CLASS="quote">maybe for some crazy reason its easier to remove them from d-series motors, who knows i dont work on those motors. Everytime i have tried to remove them from a b-series motor its a complete pain in the ***.</TD></TR></TABLE>

you are correct, these D series fools dont know..