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  1. #1
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    Default Integrale Manifold swap.

    Hi everyone,

    The day when I get to pick up the Q4 is getting closer, one of the little projects that I want to do when I get the car back is to swap over to the Integrale manifold that I picked up a few years back.

    One of the things that needs to be changed is the location of the coil packs. As we all know there isn't much room under the bonnet, so I don't fancy moving the coil packs to the side of the engine bay then running long plug leads. What I'd rather do is run a coil on plug system. Now I've seen a Q4 recently with this setup, but can't for the life of me remember where.

    So does anyone have experience of running coil on plug? Any advice, or better still, any recommendation of parts?

    Cheers
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  2. #2
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    Default

    I have a vague memory of someone using the VW COP's, but cannot find the thread either.

    Anyhow, why do you want to switch to the Integrale manifold? The only reason I can see is for maximum top end power, while the Q4 manifold provides better mid/low end torque, which you normally don't have too much of in that car.
    -
    155 Q4 -96
    Giulietta ti -59
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    Stelvio 2.2 Q4 - soon to arrive
    Fiat 500 TwinAir -11
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    159 SW 1.8 tbi -11 (recently sold)
    156 SW 2.0 TS 16V (recently scrapped)

  3. #3
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    Default

    The Q4 manifold might have good midrange torque, but when I had the car on the rolling road top end power dropped off early, very early. I'm hoping the switch to an Integrale manifold would improve top end without loosing too much in the middle. When it was running properly it had 320 lbs/ft of torque, so can afford to trade some off for top end.

    I've sent a technical enquiry to NGK to see if they have a COP alternative to the standard coil packs.
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  4. #4
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    Default

    Big thumbs up to NGK technical dept for getting back to me in less than 24hrs, they seem to think most COP units would supply enough spark, the problem, and reason why they can't suggest a direct replacement, is the physical size of the units.
    I don't have my Q4 with me at the moment, so does anyone have the dimensions of the plug connectors that sit on the spark plugs? Length and diameter would be great.

    Cheers once again.
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  5. #5
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    Default

    If I get in the garage over the weekend I'll try and get the dimensions and the intake pics (as promised for #84 last weekend!).

  6. #6
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    Default

    No worries Jack, I'm in no rush, I checked last night, and as of tomorrow it will be exactly 1 year that the car has been with the garage. Not worked on all that time obviously, but still a long time in there!!!
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  7. #7
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    Default

    Finally got in the garage for 5 mins today...here are the dimensions:

    01_01.jpg

    01_02.jpg

    01_03.jpg

    01_05.jpg

    01_04.jpg

  8. #8
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    Default

    Cheers again Jack, great pics, I've spoken to someone who has done the COP conversion and have got an idea of what to use. Amazingly price wise, not much more expensive than replacing the coil packs, especially not if you take into account new plug leads. The only extra will be finding a way to drive then, but that shouldn't be too difficult.
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  9. #9
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  10. #10
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    I remember, that have read about coil on plug conversion in this forum and I managed to find one thread about it -> link
    One performance car is not enough ...
    Alfa Romeo GTV 2.0 V6 TB Q2
    Alfa Romeo 155 Q4 widebody

  11. #11
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    Cheers @kunev , I must have missed that thread first time around, looks like all the info I need is in there.

    Thanks
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

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