Big day today, started working on it again about 9am. Had the engine running by about 11am after I re-checked my timing belt and found I had both the Cam and the pump out of time by 1 tooth each in different directions!
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The rest of the day I have spent installing the clutch slave cylinder (was broken so had to make a bracket), tidying up the wiring and wrapping the loom, installing the ECU in the 'wardrobe', sorting the vacuum hoses for the turbo actuator and brake assist and I finally got onto the task of sorting out the intercooler which was not something I was looking forward to.
In fact, I've come up with an absolute work of art made from the scrap pipes that came from the Sharan and the A4 that supplied the gearbox.
Firstly, I chose the SAAB intercooler as I wanted something hidden away in the pillar. The SAAB intercooler has 60mm hoses whereas all the VW stuff is about 48mm, there's no way to stretch the hoses that much. So I adapted the intercooler like this...
I chopped the ends off of one of the hoses that came from the sharan, shaved a tiny amount of plastic from the outside then used solvent weld and brute force to get it into the inside of the intercooler ports. I secured this further with 2 screws and some silicone sealant.
I then chopped down this pipe...
like this...
and used the bit on the right to go from the intercooler outlet to the intake manifold, along with 4 spring clips and 2 bits of hose to join it up.
The end result is this;
The hose on the inlet to the intercooler is the 'S' shaped one that comes with the long thin Sharan intercooler, this goes down to the turbo via the original sharan aluminium pipe as shown below, which has been cut and temporarily pinned with a screw, as in the next picture down. Going to get this Tigged up when I get a chance.
before...
after...
The turbo intake goes something like this...
Chopped down the original intake pipe and removed the lugs, then used a 90 degree bend pipe that came from the A4 intercooler to connect to a weird shaped pipe which then goes up the back of the engine in front of the timing belt cover.
up there...
pops up here.
Then it's just a short flexible pipe ride along to this, which I've placed behind the battery in the right hand rear pillar.
All that's left to do now is sort out the clocks and a bracket for the throttle pedal, plus the assosciated wiring to get all this back to the ECU. I do have to extend the wires for the N75 valve too, since I mistakenly extended the EGR one instead
Other minor stuff still to do such as make a bracket for the intercooler, tidy up the cables and make a workable gearshift translator, but I'm working on that still, backwards gears will have to do for now. The engine also needs a new coolant temperature sensor, since the ECU says it's permanently 90'c even when stone cold. This might be why it seems to crank over for quite a while before starting.
I have one minor concern that there seems to be a suspicious amount of oil built up in the turbo, and there seemed to be a lot of black sooty oil around the turbo outlet before I bolted on the exhaust pipe. I'm a little worried that the turbo may be kaput, or possibly just a result of not being exactly at the angle it's supposed to run at? (oil supply and return vertical?).
Dave.