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Discussion: Ask those car questions you were always afraid to ask

  1. #521
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    Citation Envoyé par -OG- Voir le message
    Why do diesel truck exhausts have those openings at the end or have the shape of a horn getting big?


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    Pour refroidir les gaz d’échappement avant de les évacuer dans l’air


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  2. #522
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    Citation Envoyé par gexgex Voir le message
    Vas dire ca au prorios des premier 2.0l turbo injection direct chez vw...


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    J.en ai eu un FSI et a 200K km il roulait encore 1#....c'était une job de 4-500$ a faire faire...pas la fin du monde.(un changement d'huile DSG et timing belt pour plus cher chacun!)

  3. #523
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    Citation Envoyé par -OG- Voir le message
    Why do diesel truck exhausts have those openings at the end or have the shape of a horn getting big?


    Sent from my iPhone using Tapatalk
    Le modele de Ford avec les trou c'est pour créé un venturi pi ca mix les gas d'exhaust avec l'air ambiant. Dodge ont le meme setup mais plus loin dans l'exhaust.

    Le modele de GM avec l'exhaust qui flare c'est pour elargir le stream d'air.

    Toute ca pour refroidir les gas d'exhaust quand y'a une regen.

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  5. #524
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    Citation Envoyé par SRT-What? Voir le message
    ^^^
    I dont agree. On a turbo car you want to avoid knock at all cost. Oil vapors is bad for detonation no mater what.
    Superknock !!!

  6. #525
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    Citation Envoyé par -Phil- Voir le message
    Le modele de Ford avec les trou c'est pour créé un venturi pi ca mix les gas d'exhaust avec l'air ambiant. Dodge ont le meme setup mais plus loin dans l'exhaust.

    Le modele de GM avec l'exhaust qui flare c'est pour elargir le stream d'air.

    Toute ca pour refroidir les gas d'exhaust quand y'a une regen.
    This.

    Pretty extreme exhaust temperatures is a by-product of the Diesel Exhaust Filters requirement and the regen cycle needed to keep them clean. Exhaust temperatures can reach 550c (1000 fahrenheit) to burn off the soot in the DPF in an active regen.

    It's pretty wild when you monitor the EGT temperatures probes and see them quickly shooting upwards in a regen.

    No one would want to walk past the tailpipe/ have the paint on their car peel off from sitting next to a diesel in regen. It could be a fire hazard in some conditions too I guess.

  7. #526
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    Citation Envoyé par -Phil- Voir le message
    Le modele de Ford avec les trou c'est pour créé un venturi pi ca mix les gas d'exhaust avec l'air ambiant. Dodge ont le meme setup mais plus loin dans l'exhaust.

    Le modele de GM avec l'exhaust qui flare c'est pour elargir le stream d'air.

    Toute ca pour refroidir les gas d'exhaust quand y'a une regen.
    Les bus de la STM ont ça aussi, le venturi.

  8. #527
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    Citation Envoyé par Vtecjustkickedin Voir le message
    Les bus de la STM ont ça aussi, le venturi.
    Sauf que les bus j'avais lu que c'était une façon de faire passer les tests de pollution. En branchant le tuyau d'échantillonnage sur la con du Venturi, de l'air frais est mélangé à l'échappement et les bus ont pu passer les tests d'émissions.

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    Tasse-toi, SVP.

  9. #528
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    Citation Envoyé par windex Voir le message
    Sauf que les bus j'avais lu que c'était une façon de faire passer les tests de pollution. En branchant le tuyau d'échantillonnage sur la con du Venturi, de l'air frais est mélangé à l'échappement et les bus ont pu passer les tests d'émissions.

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    pas mal sure que c'est faux, les test démissions sont fait sur le produit (Cummins) et ensuite ici au Québec il y a pas de test d'émission et anyway le système OBD avec les NOx sensor va te dire si la conversion des nox est pas bonne et le particulate matter sensor va te dire si il voit de la suie a la sorti du DPF.

    Si il y a un des sensor qui capote, le système OBD va te blinker ça dans la face jusqu’à ce que tu roule 5mph si tu t'en calice.

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  11. #529
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    Citation Envoyé par windex Voir le message
    Sauf que les bus j'avais lu que c'était une façon de faire passer les tests de pollution. En branchant le tuyau d'échantillonnage sur la con du Venturi, de l'air frais est mélangé à l'échappement et les bus ont pu passer les tests d'émissions.

    Envoyé de mon Pixel 2 en utilisant Tapatalk
    C’est faux, ça sert uniquement à diminuer la température de l’exhaust. C’est devenu nécessaire avec les DPF


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  13. #530
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    how possible is it to buy a car through the manufacturer rather than through the dealership? has anyone ever done this? does it really have to go through the established network of transportation, exchanges, prep, etc.? Could you not buy a brand new Canadian-spec car from Subaru Japan hot right off the press, and take care of shipping yourself?

    So lets say you were a Canadian, and bought your Canadian-spec Subaru from Subaru Japan, registered it in your province before it being shipped, and obtain a Carnet de Passage for your car before it's left the country in which it was manufactured, drive it around in Japan for a little while, and then ship it to Canada yourself. Would I need to "register myself as an authorized Subaru dealer" in order to do this?
    Any car which holds together for a whole race is too heavy.

  14. #531
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    Where do you come up with this stuff ?

  15. #532
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    Citation Envoyé par Gregster Voir le message
    Where do you come up with this stuff ?
    ...asking for a friend.

    in all seriousness, I'm just curious. And I'm genuinely happy to see you're often the first to respond to my dumb questions. And to answer your question :

    Citation Envoyé par Gregster Voir le message
    Where
    my ass
    Any car which holds together for a whole race is too heavy.

  16. #533
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    I have a dumb question Tapatalk plug in.

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  17. #534
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    Citation Envoyé par Gregster Voir le message
    I have a dumb question Tapatalk plug in.

    Sent from my EML-L09 using Tapatalk
    that explains a lot, seriously.
    Any car which holds together for a whole race is too heavy.

  18. #535
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    That would be like showing up to Canada Goose manufacturing site and telling them you want a Jacket. They'd tell you to fuck off cause there are 3-4 points of interest down the shipping road that all have to make money on you purchasing that jacket.
    Sad truth.

    In the manufacturing world, you don't question that structure - everyone has to make money.
    BMW: ( ͡° ͜ʖ ͡°)
    BMW E34: ( ͡◉ ͜ʖ ͡◉)
    BMW E34 M5: ( ͡⊙ ͜ʖ ͡⊙)

  19. #536
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    dans lfond achete un tesla.
    1992 Mitsubishi 3000GT VR-4 16g²
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  20. #537
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    Citation Envoyé par android25ua Voir le message
    That would be like showing up to Canada Goose manufacturing site and telling them you want a Jacket. They'd tell you to fuck off cause there are 3-4 points of interest down the shipping road that all have to make money on you purchasing that jacket.
    Sad truth.

    In the manufacturing world, you don't question that structure - everyone has to make money.
    right. everyone gets a cut in the interest of increasing availability sites. I guess I'm questioning due to "PDI & freight" charge (which honestly is a pretty reasonable cost everything considered). I just feel like there are some inefficiencies that build up costs the customer needs to eat, and of course letting people manage their own delivery isn't the solution. You do purchase your Tesla from Tesla (which I'm sure lowers its up front cost). I'm just wondering if there's a way to do that with any other car.
    Any car which holds together for a whole race is too heavy.

  21. #538
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    chu meme pas capable dacheter mes bobettes directement chez fruit of the loom. fucking capitalism.
    1992 Mitsubishi 3000GT VR-4 16g²
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  22. #539
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    Citation Envoyé par Snail Voir le message
    right. everyone gets a cut in the interest of increasing availability sites. I guess I'm questioning due to "PDI & freight" charge (which honestly is a pretty reasonable cost everything considered). I just feel like there are some inefficiencies that build up costs the customer needs to eat, and of course letting people manage their own delivery isn't the solution. You do purchase your Tesla from Tesla (which I'm sure lowers its up front cost). I'm just wondering if there's a way to do that with any other car.
    There is also something called brand protection.... Please tell me what benefit would you have importing your own car?

    I do like the Tesla model of direct sales but let them handle transport and prep.

    FYI there are only two points of entry into Canada for non north American produced cars that are bonded. Vancouver and Halifax.. once there is rail shipment or specialist transport to the dealer.

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  23. #540
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    Why so some manufacturers still have the gas cap in the right side of the car? (Steering wheel on the left side)

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