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  1. #1
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    Default Spesso head gasket

    Are they normally this much?

    wrinx
    My Q4 in the Garage

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

  2. #2
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    Wow, glad mine came with the car! Actually the whole engine set was by Spesso.

  3. #3
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    from www.gozzoli.it you can have a far better grA head gasket {with separated rings} at just 220 Euro. I'll go for this one certainly.
    We used it in a race prepared 75 Turbo with no problems at all when all the other one were blown after the 2 3 stage.

    Nick

  4. #4
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    Taking a quick look on here Nyssa Racing they certainly look to be pricey, the one on ebay retails at ?240
    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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    Ahh, as you say Steve, the auction is for a 1.9mm gasket which the site you listed sells for ?240!!!

    EditL it also lists a 1.9 for ?96....so I guess "racing"on the ebay version is the GpA?

    wrinx
    My Q4 in the Garage

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

  6. #6
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    got mine from walkers and it wasnt as expensive as that
    lost in space

  7. #7
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    I think the Gp.A ones have the individual fire control rings so can deal with higher boost pressures. Delving back into my memory I seem to recall the standard Alfa head gasket was good for 1.4 bar, the regular Spesso 1.7bar and the Gp.A Spesso for 2.0bar+

    But of course that could all be wrong.
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  8. #8
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    Quote Originally Posted by wrinx View Post
    ... EditL it also lists a 1.9 for ?96....so I guess "racing"on the ebay version is the GpA?

    wrinx
    #67633 is a Group A headgasket.. But it should be possible to find one around 200 euro.

    You can find Spesso catalogue (with a product number for each gasket) on http://www.tecno2.co.uk/gaskets.htm

    Cheers,
    M.

  9. #9
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    #67633 for 200€?? Where? I searched and could not find any for less than 300€.
    --==simply the best==--

  10. #10
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    After a quick search found this:
    http://www.shopmarianituning.it/icar...SC&sort=codice
    euro 225 (pretax)
    Last edited by mindus; 23-10-11 at 21:34.

  11. #11
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    So which gasket is the original thickness? the 1.4 or the 1.9?

    Does the 1.4mm increase compression from standard? or does the 1.9mm reduce it from standard?

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

  12. #12
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    The standard gasket (not the spesso one) has 1,9mm before tightening it.
    So the 1,4mm should increase the CR.

    Edit: I?ve just calculated CR change, new value with 1,4mm gasket is 8,22:1
    Last edited by Juan AR155Q4; 05-11-07 at 21:37. Reason: CR calcultation

  13. #13
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    Quote Originally Posted by Juan AR155Q4 View Post
    The standard gasket (not the spesso one) has 1,9mm before tightening it.
    So the 1,4mm should increase the CR.

    Edit: I?ve just calculated CR change, new value with 1,4mm gasket is 8,22:1
    Juan could you calculate the CR with a 1,6mm gasket?

    Cheers

    Nick

  14. #14
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    Just reviewed my calcs.

    CR:
    1,9mm -> 8,00:1
    1,6mm -> 8,17:1
    1,4mm -> 8,28:1

  15. #15
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    Calculation is supossing that head gasket thickness is the same before and after thightening. Obviously, that?s not right, but it?s a good aproximation.
    If someone has the camber and piston volume, I could accurate much better.

  16. #16
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    I was told that with 1,6mm gasket the CR should be at 8,21:1 but I do not know the camber and the piston volume, sorry.

    Nick

  17. #17
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    Could be as you say Nick.
    CR with original gasket (1,9mm) is 8:1 but I don?t know wich is the gasket thickness after tightening the cylinder head. It surely be less than 1,9mm. So with 1,6mm the final thickness should be less increasing CR.

  18. #18
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    Quote Originally Posted by wrinx View Post
    Are they normally this much?

    wrinx

    hello boys, pleaase see this link: http://www.navalineasport.it/

    This company has excellent products & excellent prices!

  19. #19
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    Quote Originally Posted by toch View Post
    hello boys, pleaase see this link: http://www.navalineasport.it/

    This company has excellent products & excellent prices!
    Have you used these gaskets before Toch? Looks like they do several different gaskets for the Q4, different thickness's as well as separate sealing rings.

    Might be a good alternative to Spesso
    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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