Agreed - the Mk2 chassis, like the contemporary Honduh chassis, accepts
virtually ALL and ANY configuration of OE drivetrain in a mix-and-match set-up.
Some of the old-school 16v tricks included the 1.8l head on the 2.0l block b/c
the 1.8l head flows better in stock trim. To spice up power, run an exhaust
cam in place of the intake cam on a 16v.
Depending on where you live and how invasive your smog checks are, it's very
possible to pass off a Mk2 as block-stock even though it's anything but inside.
In other words (and as the OP is finding), it's very difficult to see an
external difference between a completely stock 2.0l engine and a 1.8l head on a
2.0l bottom-end.
On Tuesday, February 2, 2016 2:57 PM, Steven Arguello
<stevenargue...@gmail.com> wrote:
Anything is possible, trans, heads and blocks are all interchangeable. My GTi
had a weird mix of 2.0 and 1.8 components and it ran beautifully. Never passed
emissions because of a hollow cat, but I had a buddy who took care of it. He
sold his business so I registered it as a historic/classic vehicle. No more
emissions testing.
On Feb 2, 2016, at 2:26 PM, damac2004 <damac2...@sbcglobal.net> wrote:
somebody on forums just showed me a couple pictures that makes it pretty clear
now. since i haven't touched these parts before it didn't dawn on me to look
at where you slide the oil pump im shaft gear in is a different dimension!
it looks like i have a 1.8 block, there is a little bit of wiggle room to feed
the gear from outside block. the 2.0 block has a bigger hole to fit the bigger
gear!
the im shafts are definately different, the 1.8 is bulkier with gear oil pump
side shaft past where it rides on bearing and gear itself. so that part must
be what people say hits.
so i need to order a 1.8 im shaft.
so maybe its safe to assume with the wiring and ecu that the car had another
motor originally? is it possible somebody left all the chasis fueling stuff
and even put on a different head to a 1.8 bottom end?
oh boy i hope this doesn't stop me from getting smogged.
On Tuesday, February 2, 2016 at 9:37:13 AM UTC-8, hollandphillips wrote:
The external differences between 1.8 and 2.0 16V heads and blocks are very
minimal. I don't recall the over hang you speak of, but I wouldn't be
concerned. ~HollandOn Feb 2, 2016 09:28, "damac2004" <dama...@sbcglobal.net>
wrote:
hmmm, i am still not convinced and found a 1.8 oil pump in it.
is there a problem with me going with the 2.0 im shaft/gear and its oil pump?
if im reading right it can only help? then i won't have to worry.
the more i read im still not seeing how it can be a 2.0 bottom end with the 1.8
intermediate shaft if things don't hit when running the engine.
is it normal for the head on these motors to stick way out past the front of
the block where they meet? im used to seeing that area flush on mydiesel where
mated.
On Tuesday, February 2, 2016 at 6:55:11 AM UTC-8, mgyip wrote:
Sure sounds like a 2.0l 16v especially because of the 2 knock sensors which
were only present on the 91 and later cars - Digifunk for 8v and Moronic for
16v. I wouldn't necessarily throw TEPO (the evil previous owner) under the bus
though - Volkswagen was/is notorious for having a vast spare parts bin that
crossed model types and years, throwing together old and new model parts when
their supply was thin. In 91-92, VW quality was, um, not-so-good and their
supply was the same.
On Monday, February 1, 2016 5:51 PM, Holland Phillips
<faster...@pacbell.net> wrote:
Well, it's definitely a 9A engine. Whatever else is going on with the
internals is a mystery. I would just buy all the replacement parts you need for
the 9A and be done with it.On Feb 1, 2016 14:30, damac2004
<dama...@sbcglobal.net> wrote:
1. yes there is an ecu and it has a techtronics chip in it that says 16v 2.0
2. i think it does have 2 knock sensors on the front of the block to the left
of the block breather fitting? each one looks the same, one has a bare wire
the whole length, and each goes to its own wire harness clip.
3. this car is disabled on the driveway and im struggling to get it higher for
me to get underneath. i was trying to feel around back there from underneath
looking up and all i can find on the drivers side lower block is a big embossed
A
i'm new to these cars so im scared its some kind of other engine. this still
doesn't explain how this car was using the larger im shaft and smaller oil pump
gear? there isn't a mark anywhere on those parts so obviously they aren't
hitting the guts of the engine.
On Monday, February 1, 2016 at 12:04:43 PM UTC-8, hollandphillips wrote:
Does it have a ECU mounted under the plastic tray at the base of the
windshield? The tray covers the windshield wiper motor, and is held on by some
clips. If it does, it's probably a 9A. The 1.8 liter 16V doesn't utilize an
ECU.~HollandOn Feb 1, 2016 11:59, "damac2004" <dama...@sbcglobal.net> wrote:
the chasis is a 1991 gti but i don't trust the previous owners after having
seen all the hack jobs. for all i know another motor is in there :(
im trying to look on front of block and see these markings in the picture i
attached, down below that is the part number.
On Monday, February 1, 2016 at 8:30:48 AM UTC-8, hollandphillips wrote:
I don't recall you saying what year your car is. If it's a '91-'92 2.0 liter
16V, the engine designation is 9A.
~HollandOn Jan 31, 2016 11:51 PM, "damac2004" <dama...@sbcglobal.net> wrote:
is there some kind of decoder? when i search google i come up with few and
differing answers. i want to find out what engine i have so i can make sure i
get the right intermediate shaft and stock parts to get it smogged.
the block says: 051 103 021
the head says: 051103373--
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