that is it, for sure, just thread hex screw with a cut orifice.
yes it is in very tight, but if clear and clean the orifice it's ok.
every overhead cam engine has that hole. and all are sealed with the head gasket , (not installed backwards ) the Felpro gasket set even has UP MARK stamped on it but not lame china clones.
the is called an OIL GALLERY, and is under 50psi at cold engine startup.
before putting some gunk on the gasket,
the makers of gaskets (top brands) and all honda and toyotas;' the gasket is made with built in sealant that must not be messed with ever, on assembly ( THE FIRST TIME RUN THE GASKET OOZES SELF SEALANT)<< MAGIC.
what you buy off the shelf for a head gasket, can be super good (Felpro) or pure junk (now vast) from china.
The head gasket is complex when and engine warms up from cold to hot, the gasket must flex to allow it to not tear up. from aluminum huge thermal expansion actions;
that Sir is the oil gallery. from the main gallery on left side of block, fed by the oil pump. and all main and rod bearings.
SOME 3 rules are( heads 101)
head must not be warped, (measure that) (the FSM covers this, a steel ruler and feeler gauge test)1996 free in post #1. see engine chapter. (factory service manual)
block deck top , not warped.
and a top brand top quality gasket used not that china NO NAME or Funny name crap.
seen here.,
the wIde slits are oil drain back (gravity ) drains.
others there are water,
and just one head oil gallery front left corner on all G16s. the pump gallery feed is seen below at the pump pressure adjuster plug. then to filter and last to main gallery and oil pressure switch (aka a oil sender)
I had a hard time finding new head bolts, (sold) (AT REBUILD) old bolts are not any good after 100000 thermal cycles cold> hot> cold. makes them weak. if old and weak they snap. (WITH NO WARNING)
GOOD LUCK ON YOUR HEAD JOB.
![[Image: engine1%20(4).jpg]](https://www.fixkick.com/engine/97-motor-pull/images/engine1%20(4).jpg)
I had to drive to H3LL AND BACK TO FIND 1 BLOCK THAT WAS NOT CRACKED.
yes it is in very tight, but if clear and clean the orifice it's ok.
every overhead cam engine has that hole. and all are sealed with the head gasket , (not installed backwards ) the Felpro gasket set even has UP MARK stamped on it but not lame china clones.
the is called an OIL GALLERY, and is under 50psi at cold engine startup.
before putting some gunk on the gasket,
the makers of gaskets (top brands) and all honda and toyotas;' the gasket is made with built in sealant that must not be messed with ever, on assembly ( THE FIRST TIME RUN THE GASKET OOZES SELF SEALANT)<< MAGIC.
what you buy off the shelf for a head gasket, can be super good (Felpro) or pure junk (now vast) from china.
The head gasket is complex when and engine warms up from cold to hot, the gasket must flex to allow it to not tear up. from aluminum huge thermal expansion actions;
that Sir is the oil gallery. from the main gallery on left side of block, fed by the oil pump. and all main and rod bearings.
SOME 3 rules are( heads 101)
head must not be warped, (measure that) (the FSM covers this, a steel ruler and feeler gauge test)1996 free in post #1. see engine chapter. (factory service manual)
block deck top , not warped.
and a top brand top quality gasket used not that china NO NAME or Funny name crap.
seen here.,
the wIde slits are oil drain back (gravity ) drains.
others there are water,
and just one head oil gallery front left corner on all G16s. the pump gallery feed is seen below at the pump pressure adjuster plug. then to filter and last to main gallery and oil pressure switch (aka a oil sender)
I had a hard time finding new head bolts, (sold) (AT REBUILD) old bolts are not any good after 100000 thermal cycles cold> hot> cold. makes them weak. if old and weak they snap. (WITH NO WARNING)
GOOD LUCK ON YOUR HEAD JOB.
I had to drive to H3LL AND BACK TO FIND 1 BLOCK THAT WAS NOT CRACKED.
http://www.fixkick.com