Something I want to present - with the issues you've described, I, personally, would pull the engine and fully disassemble it and have the block/crank/rods et all inspected and measured by a reputable machine shop. With the issues known to exist, it would be a shame to spend the time and money replacing and repairing them only to discover other issues currently not obvious. Especially since it seems that the po appears to have done some questionable work to the engine already. With new and viable used parts becoming more difficult to procure, and expensive, it just makes since, at least to me. Another option to consider, the 9A engine was used in not only the '91-'92 16V GTI and Jetta, it was also used much more commonly in the Passat through '94. So searching "automotive recyclers" for a good used Passat 9A may be a good option. Also, most Passats came with automatic transmissions, which isn't a problem, since you already appear to have a good drive train, other than the engine. Just my thoughts... ~Holland On Feb 2, 2016 12:06, "'Matthew Yip' via MK2-16v" <mk2-16v@googlegroups.com> wrote:
> 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. > ~Holland > On 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. > ~Holland > On 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. > > ~Holland > On 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 > -- > You received this message because you are subscribed to the Google Groups > "MK2-16v" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to mk2-16v+u...@googlegroups.com. > To post to this group, send email to mk2...@googlegroups.com. > Visit this group at https://groups.google.com/ group/mk2-16v > <https://groups.google.com/group/mk2-16v>. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/mk2-16v/20c387d7-fd5b- 4ad1-9f35-df0ae5adca6b% 40googlegroups.com > 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