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  1. #1
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    Default Timing belt change - parts?

    What exactly do I need....?

    T=Timing belt


    B=Balancer belt


    A=Aux/PAS/alternator belts (this one is confusing me!!!!)


    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

  2. #2
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    I reckon...

    T=5+11+6

    B=12+3+5+2

    A=12+ (9 or 13) +10

    I thought 12 was the PAS??? Is it the aircon? SGR41208 is the PAS pump.

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

  3. #3
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    (Top pic) belt #12 goes between the aircon and PAS. The PAS pump is relayed through the aircon pump. If that makes sense.

    For the timing belt isn't #6 the drive pulley from the crank? If so don't think you need to change it. 11+5

    For the balance belt I think 12+3
    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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    Quote Originally Posted by Steve Webb View Post
    (Top pic) belt #12 goes between the aircon and PAS. The PAS pump is relayed through the aircon pump. If that makes sense.
    Yes it does, that's what I thought was going on. So why 9 or 13 (or am I being thick?).

    Quote Originally Posted by Steve Webb View Post
    For the timing belt isn't #6 the drive pulley from the crank? If so don't think you need to change it. 11+5
    Yes, you're right

    Quote Originally Posted by Steve Webb View Post
    For the balance belt I think 12+3
    Number five looks like it has a bearing (6)...is it not critical?

    Thankfully I got the balancer belt and idler cheap on ebay as they're about ?115 for the pair!!!

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

  5. #5
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    Quote Originally Posted by wrinx View Post
    Number five looks like it has a bearing (6)...is it not critical?

    wrinx
    Isn't that the bearing the balance shaft sits in though?
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  6. #6
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    Not a clue



    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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    so the waterpump isn't driven by the timing belt then?

  8. #8
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    Ah, forgot about the water pump!

    Yes, it will be...

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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    Not driven by the timing belt but if you can get one for a good price then id change it

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    Have you ever touhgt that this belt is too thin? Here in Finland, we have lot of problem, how long this timing belt last. My last original timing belt has only 30 000 km and I lost 4 valves. The timing belt doen?t snap, it loose it?s thoots. Before that my timing belt last 18 000 km.
    Now I changed that belt and but 1" belt in. We have in Finland custom made 1" belt, which have two adjustable camshaft pulleys , couple of extra parts, which you need to install this belt,


    See that last picture of this site http://www.heikka.fi/hihnapyorat.html

    And if you change your belt allways change your waterpump, because you can?t take it off without taking out the timing belt.
    I take off my balancer shaft belt, because of that 1" timing belt. It don?t fit anymore, because 1" belt take so much space.
    Last edited by 155-tbo; 30-10-07 at 16:42. Reason: Change of one letter ;)

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    Love those cam pulleys!

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    Quote Originally Posted by 155-tbo View Post
    I take off my balancer shaft belt, because of that 1" timing belt. It don?t fit anymore, because 1" belt take so much space.

    Did you do any changes to make the engine run smooth without the belt?

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    No changes, Just take out balancer shafts pulleys and ready to drive.
    I have to also tell you, that I can?t drive my car now(clutch, flywheel etc.), but I will tell you more later, how the car runs without that balancer belt.

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    Quote Originally Posted by 155-tbo View Post
    No changes, Just take out balancer shafts pulleys and ready to drive.
    I guess you needed to make up some nice caps to cover where the shafts went. If I build myself a "quick" engine one day I will do this

  15. #15
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    Quote Originally Posted by AlfaJack View Post
    I guess you needed to make up some nice caps to cover where the shafts went. If I build myself a "quick" engine one day I will do this
    I think he mean't just remove the pulleys on the end of the balance shafts. If you remove the shafts you have to plug up their oil feeds.

    I've heard people do this before with no noticeable increase in vibration, but also no performance gain either (or minimal) But I didn't realise you needed to do it to fit the 1" belt.
    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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    Quote Originally Posted by 155-tbo View Post
    Have you ever touhgt that this belt is too thin? Here in Finland, we have lot of problem, how long this timing belt last. My last original timing belt has only 30 000 km and I lost 4 valves. The timing belt doen?t snap, it loose it?s thoots. Before that my timing belt last 18 000 km.
    Now I changed that belt and but 1" belt in. We have in Finland custom made 1" belt, which have two adjustable camshaft pulleys , couple of extra parts, which you need to install this belt,


    See that last picture of this site http://www.heikka.fi/hihnapyorat.html

    And if you change your belt allways change your waterpump, because you can?t take it off without taking out the timing belt.
    I take off my balancer shaft belt, because of that 1" timing belt. It don?t fit anymore, because 1" belt take so much space.
    So how much is the kit? and how long does the belt last for km's?
    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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    Quote Originally Posted by Steve Webb View Post
    I think he mean't just remove the pulleys on the end of the balance shafts. If you remove the shafts you have to plug up their oil feeds.

    I've heard people do this before with no noticeable increase in vibration, but also no performance gain either (or minimal) But I didn't realise you needed to do it to fit the 1" belt.
    I drove mine without the balance belt for about 500 miles and when I put it back on there was a noticeable difference in vibration when accelerating

    I will always run with one from now on unless I get the crank balanced properly
    Lead follow or get the flock out of the way

  18. #18
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    Hope I can explain that to all.

    No need to make extra caps. Only take off that belt and the pulleys. Let them be there, no harm. Just a little bit safer engine.
    No horsepower on my mind, when we take that belt off.

    When you put that 1" belt the distance between cam pulleys and beltwheel? ( that part which is lowest part in the way of belt) is not the same as original.And I mean the distance between cam pulleys and engine. So you have only 2-3 mm distance between 1" belt and balancer shaft pulley.(the first one, when you look your engine forward). Manufacturer recommended that, that pulley will be taken off. It is hard to explain and I don`t have any pictures. Sorry.
    This set costs little bit over 400 € and it is full set. The belt is from fiat ducato 1.9 diesel engine. I don?t know where the beltwheel? is from, but it?s ordered from factory of fiat, so it will be genuine original part also. The rest are custom made parts. Manufacturer of this set recommended that same 60 000 km as Alfa Romeo, but as you all know that 60 tkm is a little bit too much for that original belt.
    When I get my engine and clutch ready I will make some test drives and tell you better feelings of the car. Hope I get also few extra horsepowers also

  19. #19
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    Anyone managed to figure out the 9 or 13 issue in picture three?

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

  20. #20
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    Errrm, what am I missing?

    13 - crank pulley drives the aircon pump.

    9 - air con pulley drives the PS pump...


    Although in the second diagram of pic 3, there is a wierd drawing of the air con pump pulley - only shows one drive area on it...


    EDIT - JUST REALISED MULTIPLE PART NUMBERS - CONFUSED X2 HERE!

  21. #21
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    Il guess that the top diagram is for cars with AC and the bottom one is for those without - although I thought the all had AC as standard...

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    Quote Originally Posted by AlfaJack View Post
    Il guess that the top diagram is for cars with AC and the bottom one is for those without - although I thought the all had AC as standard...

    All the UK cars had A/C , but not sure about elsewhere. So both belts 9 & 12 are needed for UK cars. Ignore belt #13 refers to non A/C car (Non UK)
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  23. #23
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    Quote Originally Posted by AlfaJack View Post
    Il guess that the top diagram is for cars with AC and the bottom one is for those without - although I thought the all had AC as standard...
    Quote Originally Posted by Steve Webb View Post
    All the UK cars had A/C , but not sure about elsewhere. So both belts 9 & 12 are needed for UK cars. Ignore belt #13 refers to non A/C car (Non UK)
    That?s right, and the belts is not the same as in one conects the PS and in the other the AC.

  24. #24
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    For Balancer is 12 + 5 + 3
    5 and 3 are bearings and will be good to change them.
    They are not from balancer shafts. One is for the balancer belt tensioner, and the other changes direction of the timing belt.

  25. #25
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    Thanks everyone....think we got there in the end

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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