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    Actually I sent all mine to test & refurbishment...

    Actually I sent all mine to test & refurbishment while having the engines in pieces. They were not that off, but two of them needed some tweeking - don't ask me how
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    Correct!

    Correct!
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    Steve, are you sure they didn't turn up the fuel...

    Steve, are you sure they didn't turn up the fuel pressure? I changed to a Evo II regulator, which looks exactly the same, but with 0,5 (3) bar higher setting, which in turn could be turned up another...
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    Interesting thread. Back in the days well...

    Interesting thread. Back in the days well recognized Evocars (Late Barry Waterhouse), offered 250 hp in the Q4 and 260 hp in the Integrale Evo II. I mounted their chip and had to change fuel pressure...
  5. Hmm, water leaks is the only problem I have not...

    Hmm, water leaks is the only problem I have not had .. but let's check
  6. Sometimes the most important you can do to...

    Sometimes the most important you can do to yourself is to ask yourself the right questions. So, with that said, I discovered one VERY important component that more or less had failed completely...
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    Well, since 101.04 and 101.05 cars are identical...

    Well, since 101.04 and 101.05 cars are identical hardware wise, the 101.03 car differs by water spray on the intercooler and 101.03 and 101.05 have identical maps, I suppose the ECU dislike it having...
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    I haven't been looking in to it for over 10 years...

    I haven't been looking in to it for over 10 years and was surprised by how many files I had .. many with almost the same name. What I could see is that they have the data on the same addresses,...
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    Made a quick stop at the workshop on my way home...

    Made a quick stop at the workshop on my way home today. Enthusiastic after having borrowed a special tool to extract the flat pin females from the JPT contacts used for the injector wires and most...
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    New status update. The JE pistons arrived two...

    New status update. The JE pistons arrived two weeks ago and we made the final plateau honing with the finest stone and the by JE prescribed cross hatch angle. Since the cylinders weren't damaged and...
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    Well, I am rebuilding the engine completely and...

    Well, I am rebuilding the engine completely and put in very light forged JE-pistons, so while having everything out and considering what could be done for small money to enhance the experience even...
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    Unfortunately it is located at the crossing of...

    Unfortunately it is located at the crossing of the red and orange strap in the attached picture. It means that together with the ignition coils it is one of few components that are close to...
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    Flywheel lightening

    I consider to lighten the flywheel and found this thread: http://www.guy-croft.com/viewtopic.php?t=570

    Do anyone of you have experience from lightening the 155 Q4 flywheel and have any advise to...
  14. Ooooh. That was an advice that really took the...

    Ooooh. That was an advice that really took the breath out of me ... Mine has done just under 100.000 km, so I suppose it is kind of low mileage, it has done two transmission oil changes and been...
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    Piston 1, 2 and 4 - all broken in ring land...

    Piston 1, 2 and 4 - all broken in ring land between 1st and 2nd, respectively 2nd and 3rd piston ring. Various degree of fracturing, but still cracked. Fortunately the cylinders are fine, no...
  16. When the engine is out, what should you replace/upgrade?

    I've been told that this is what you should replace when the engine is out, since it is a nightmare to do it otherwise if they break:

    - Knock sensor
    - Ignition coils

    I consider upgraded head...
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    We sorted it out the traditional way in the...

    We sorted it out the traditional way in the flywheel bell housing. Works just perfect. Case closed.
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    Bracket design for engine stand?

    The workshop manual recommends an engine stand which connects from both left and right side of the engine block - which I don't have. However on Scara 73 web page, it looks like they manage it from...
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    Steve, The cable is light grey, or white,...

    Steve,

    The cable is light grey, or white, with a red stripe. Picture 1. It goes together with the cable from the 2-pole contact with yellow sealing, seen in the forefront of the picture 2. They...
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    .. finally. The engine is out. We made a good...

    .. finally. The engine is out. We made a good deal on a two pillar lift this spring, which makes life easier. However. An engine job on a Q4 is NEVER EVER easy.
    What I know, so far:
    - Nothing wrong...
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    Interesting problem. I make the same torque, but...

    Interesting problem. I make the same torque, but about 325 hp at 6600-6800 rpm with rev limit at 7050 rpm with standard internals, intercooler and injectors. However I have fitted a Wallbro 255 l/h...
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    Thanks for your input - and yes you got me right....

    Thanks for your input - and yes you got me right. I will check the oil vapor recovery system with the excellent motivation that it is simple in relation to strip down the engine.

    One comment to...
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    .. and I probably don't have time to check more...

    .. and I probably don't have time to check more the coming three weeks since I have two cars that more urgently needs attention and on top of that I will be traveling for two weeks. So, to be...
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    I did not have access to a compression test...

    I did not have access to a compression test equipment, so I checked what I could with leak down and endoscope. I haven't checked the oil vapor separator yet, but would be surprised if that could...
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    Things appears to turn out somewhat unexpected. I...

    Things appears to turn out somewhat unexpected. I was called last week by the turbo provider who found the turbo to most likely be ok. They should check the sealings in detail to be sure, but meant...
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