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1/20 Decent
weather allowed for much progress, but not quite as much as I'd
hoped. Still I got a lot done, ranging from installing the rear
subframe, installing the shifter box, drilling a lot of holes, and routing
the ABS wiring harness. Follow along as I touch base on some of the
mysteries of what holes go where when VR swapping your A2: The
clutch pedal assembly for the VR6 uses a hydraulic slave/master cylinder
rather than the cable operated clutch found on most other VWs up until the
late 90s. The cable shift tranny with it's hydraulic clutch is
really quite smooth, although sometimes they can be a bit notchy feeling
which alleviates after time. (or a short shift kit). Since the A2
Golf/Jetta never came with the cable tranny (at least in the US) a hole
needs to be added for the actuator rod on the master cylinder. If
you are starting from scratch the best way to get the hole lined up in the
right place is to install the pedal assembly, note where the rod would
pass though then go back around to the front of the car and drill
away. I've eliminated the guess work for you with the photos shown
here. Basically what I've done is installed the pedal assembly,
walked around to the front and drilled away ;-) ok I'll go into a bit more
detail, right down to what size hole to drill. With the pedal assembly
bolted in note the area where the assembly dips in, the hole will be right
here, there are three grommets in this area, and the one hole closest to
the pedal assembly is almost a dead ringer of where to drill your
new larger hole, but not quite its a bit more towards the driver's side of
the car and actually slightly cuts into the second hole as shown in the
photo. It's tough getting a hole saw to start the cut which is why
the area is scratched up in the photo, also note I'm holding a small stud
in my hand that was in the way above the two existing holes, just snap it
off with a pair of pliers. Once the new hole is drilled cut the
second grommet down to fit back in the hole and glue it in place, then
glue the clutch rod seal into place, install the brake master cylinder
assembly it's ready to roll. Next
up was the shift box assembly, I once gave another swapper some really
good advice for installing the new shift box, but unfortunately forgot to
follow it myself this time around, however in my old age wisdom set in and
I came up with a couple other alternatives for installing the shift box.
First though let me clue you in on what is still probably the best and
most reliable way to install the shift box hassle free. Start off by
going down to a hardware store and buying four or five (five if your prone
to loosing things) 1" headless bolts, the kind that have the base squared
to lock them in place (so you don't need a second wrench holding them
still while tightening up the nut) get four nuts to match (six if you are
prone to loosing things). Remove the existing shift box, it unbolts solely
from the bottom, if it feels stuck from above it's because they've used a
layer of that foamy double sided tape to hold it tight against the tunnel.
With the old shift box unbolted you will see... the domelight, but that's
not important, what is important is the four existing holes are nowhere
near lining up with the four holes on the VR6 shift box and shown in the
photo of the two shift boxes and again with the shift box pressed into the
tunnel opening. So here's what I'd recommend doing, hold the shift
box up against the tunnel and mark where the four old nut holes are on the
VR6 shift box, take the shift box over to your bench and file in four notches, return to under the car, bolt the shift box into place using the
four existing nuts and the old bolts. Line it all up mark the four new
holes. Drill the four holes out using a small drill bit (smaller than the squared
area on the new bolts) File the holes square, drop the new bolts through
from the top, fasten it in with the new nuts and your set. You can
even leave the four old bolts attached for extra security if you
want. Alternately you can use 10mm self tapping sheet metal style
bolts, sheet metal screws, fumbling around with nuts and bolts and two
wrenches, and probably a couple other methods I won't get into. One
of my favorite things in buying a donor car is the fact that you get
everything with the car, including ABS, all US VR6 have ABS so if you buy
a donor you get the ABS as well. A lot of people are scared off by
the prospect of installing the ABS in their car but if I had to rate the
job on a scale of 1-10 I'd say it's a 6. If you have a 90 or later german
built car I'd drop that 6 down to a 2. The installation largely
consists of drilling new holes, and locating the ABS control unit and
sensors throughout the vehicle. The ABS system itself it very self
contained, it's wiring interfaces with the fuseblock in one plug and one
wire going to another plug. Not much guess work there. It can
be a little tricky fitting the unit under the dash and on my 88 the ABS
unit is fitted quite tightly above the fuseblock making servicing it or
the fuseblock a bit of a pain in the ass. On this Passat donor the
control module was fitted under the backseat, making for a very easy
install, using the factory bracket. I haven't done the final fitting
on the unit yet so there will be more on that later, but for now I went
ahead and added the main wiring harness hole in the firewall. This
hole can be drilled easier from the inside rather than the outside, just
clear the wiring out of the way line up center to the other two existing
holes and let her rip, the hole is 47mm. File the edges when you are
done since you'll need to feed all the wiring through the hole into the
engine bay and you wouldn't want to strip any of the insulation off (or
layers of skin for that matter). With all the wiring harness ran now all
that remains is adding four holes for the sensors (one in each strut
tower, two under the backseat) and hooking it all up. More to come on this
and a complete write-up will be added to our sister site A2-Vr6.com. Since
hole drilling was the prominent event of the day I decided to go ahead and
add the new hole for the ECU. On the A2s the ECU is on the left side
next to or under the short splash tray, while on the A3's , VR6 C's and
G60's the unit is located on the passenger side next to the ventilation
fresh air intake. You could just route the new ECU up through the
old hole and cram it in where the old unit was along with about 1.5"
feet of extra wire but I've always chosen to add a new hole and locate the
ECU where the factory intended it to be. The old hole can be plugged using
a VW 2" grommet found either at the dealership or a wrecking
yard. The new 2" hole goes just slightly toward the driver's side of
the AC hose plate (or block off plate) there are two studs most of the
time, and lining the hole up just to the driver's side of these will work
well. You've got some margin for error here so don't sweat it too much if
you are off .75" or so. (a 49mm hole would be ideal) I'll touch base on this more
later but there is even a stud in the cowl floor that allows you to center
the ECU, add two screws and it's fully secured, yet still serviceable. I
didn't bother to take photos of the pedal cluster installation or the rear
subframe installation as they bolt right in. The VR6 subframe does
have two additional mounting points past the sway bar that requires you to
pull the carpet up and drill a access hole for the new nut to be added to
the bolt that comes through, I'll photo-document this later. It's really
easy with just a little foresight. 1/21
Only had a few hours to work on the car not to mention it was pretty
miserable out that day but basically what I did was install a new rear
beam along with the five lug rear disk brakes. About the only
lacking feature the CL has that I don't like is no rear sway bar, this
coupled with what I thought was going to be a incompatible rear
proportioning valve lead me to hunt down a new rear-end. I lucked
out here as my friend Harlan had a G60 rear beam that he had been saving solely
for the the rear disk brakes, he gave me the beam in return for me pulling
the brakes for him. Fair enough. I spent some time removing his
brakes and cleaning up the beam before removing the CL rear-end and
installing the new beam. About the only thing that stands out in my mind
is the rear left brake line bracket on the pre-90 cars? is welded to the
body, but on the 90-later cars the bracket is welded to the beam, so
before you start bolting the rear beam up remove this bracket with a
hammer and chisel, or cut-off wheel. A couple other things to note
are buy new e-brake cables for whatever year car you
have w/rear disks, so if you have a 87 8V buy rear e-brake cables for a 87
w/rear disks, if you have a 86 or 87 car with drums just substitute that
year with disk brakes. Let's see what else,
the brake lines come into play here, if you have a 88 or older car (or a
89 CL) it will have two rear brake lines going back to the proportioning
valve, where as if you are swapping over the rear you will only have one
line. Swap the line over or if you can bend one of your existing lines to
work with the new rear beam proportioning valve. The rear
proportioning valves on the 89 CL, G60 w/ABS, and Vr6 C w/ABS were all the
same, only difference being the G60 and VR6 had a t-fitting so only one
line was feeding both rear inputs (proportioning valve still had two
inputs/two outputs), the Passat actually only had one input and two outs.
Photos will explain this a little better but basically the two rear inputs
have been merged into one via a T-fitting. 1/27
Updates (posted 2/1) not much to report from the past weekend due to a
trip to the junkyard and a couple minor set-backs. I have made a document
edit that should be noted regarding the rear e-brake cables. I
incorrectly stated if you had a 1/89 or later car you could use the
e-brake cables from the Passat, VR6 C, or G60 C, this is incorrect, the
Passat cables are too long, and the Corrado cables are too short.
So other than going to the junkyard and grabbing some non-project related
goodies the rest of Saturday was spent running the main engine bay
harness, re-taping wires, laying out the interior wiring , cutting both
rear harnesses for the integration (Golf/Passat). One of my minor set
backs I will share for everyone's learning pleasure is to always remember
to MARK WIRES, I don't know what it is that I think will allow me to
retain four wires in my memory out of 400 for over a month but it never
ceases to amaze me, a month later I'll be like WTF was this for? Case
in point: I had a small harness on the main engine harness with five
clipped wires, I don't usually clip wires so I thought to myself it must
have been AC related, I could see the other end at the fuseblock and it
was a single connection, so I pulled it out and taped the harness back up
without them. Rewind to a month and a half ago.. I'm outside weeding out
the wiring from the Passat, it's dark, cold I'm disconnecting things
noting anything that looks like I might forget what it went to, and then there's
the wiper harness, won't work in whatever car I put it in I thought to
myself, have to use the factory plug... snip. Flash forward back to
present day I'm routing all the wiring in the engine bay, can't find the
harness to the wiper motor though... any guesses as to what the five wire
harness was? Luckily there are a couple small grommet holes so I'll just
use one of those rather than trying to fit the five wires back through the
main grommet. Case
number two: I have a single short harness that appears to be double-sided
with both sides matching the fuseblock, no idea what this was for or where
it connected... couldn't think of any use for it so I unplugged it and
left it in the garage, a couple hours later I'm scratching my head
wondering where the check Brake/ABS light harness is.... any guesses? So
mark your work even if you are pulling it right from one car and putting
it in the next, once it's all out and looking like spaghetti you won't be
able to tell one plug from the next and any shape the harness may have had
in it's original car is probably lost now making identification by
location difficult. (wiring diagrams are useful for integration as well
but at this point these are primarily routing errors which could have been
easily avoided simply marking them with tape) Speaking
of tape the factory wraps the wiring harnesses using what is known as
Friction Tape, it's similar in width to electrical tape but is a nylon?
based fabric tape that you pick up at Sears or Home Depot (Lowes for your
East Coasters), runs about $2 a roll, using it insures a factory looking
harness re-wrap that looks original, and factory correct. Using
electrical tape to wrap a motor harness will leave you with a sticky gooey
mess after the first month of use. Other
than laying out the wiring, adding the holes for the brake and ABS lines,
and running the brakelines themselves I pulled the intake manifold and
valve cover, cleaned them up and gave them multiple coats of flat black
engine paint (more black parts to come for kick ass black on white
contrast). I went ahead and posted a couple of the photos of the
non-EGR exhaust manifold and intake manifold since this is unique here in
the US. On Weds 1/31 I installed the front steering knuckles and ran
the rear brakeline. This weekend should see the installation of the motor
as well as the correct coolant reservoir bracket and the bracket for the
clutch slave cylinder line. |
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Line your drill up with the edge of
this hole for a perfectly located new clutch hole
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There's a little stud bracket
that needs to be removed before installing the brake assembly, a twist
with pliers will do.
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With the new hole cut plug the
second hole with it's old grommet (trimmed to fit) then glue the pedal
grommet into place for a water tight fit/
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