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What is this?

Discussion in 'Ask An Owner Operator' started by feldsforever, Jun 8, 2021.

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  1. Jun 8, 2021 #1
    feldsforever

    feldsforever Road Train Member

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    Does 20 valves make it a ten cylinder? They are valves right?

    I'm thinking they are valve springs. Because that looks like there exhaust port and headers.

    I'm also guessing the valve springs are sitting onto of the valves. And the valves are what control the air inflow into the cylinder.

    What is it, and how close to right am I?
     

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    feldsforever, Jun 8, 2021
    feldsforever, Jun 8, 2021
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  3. Jun 8, 2021 #2
    mudflap77

    mudflap77 Heavy Load Member

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    Well there is 24 valve if you count the ones hiding behind the jug. 2 intake 2 exhaust make 4 per cylinder. 6 cylinder
     
    mudflap77, Jun 8, 2021
    mudflap77, Jun 8, 2021
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  4. Jun 8, 2021 #3
    AModelCat

    AModelCat Road Train Member

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    Yup its an inline 6. 99% of on road engines in North America are. Exceptions being the old V-block Detroits, V8 Macks and the V8 Cats. Can't remember if Cummins made a V8 on road engine or not.
     
    AModelCat, Jun 8, 2021
    AModelCat, Jun 8, 2021
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  5. Jun 8, 2021 #4
    feldsforever

    feldsforever Road Train Member

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    I have to lay down. But. Out side of a show truck, up to how many cylinders can a big rig have.? Is six or eight the max?
     
    feldsforever, Jun 8, 2021
    feldsforever, Jun 8, 2021
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  7. Jun 8, 2021 #5
    AModelCat

    AModelCat Road Train Member

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    They put 12V71 Detroits in trucks from factory. V12. I have heard of a couple one-off units with V16 Detroits though.
     
    AModelCat, Jun 8, 2021
    AModelCat, Jun 8, 2021
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  8. Jun 8, 2021 #6
    mudflap77

    mudflap77 Heavy Load Member

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    Weren't they just 2 V8s bolted together?
     
    mudflap77, Jun 8, 2021
    mudflap77, Jun 8, 2021
    #6
  9. Jun 8, 2021 #7
    Speed_Drums

    Speed_Drums Road Train Member

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    Speed_Drums, Jun 8, 2021
    Speed_Drums, Jun 8, 2021
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  10. Jun 8, 2021 #8
    Dino soar

    Dino soar Road Train Member

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    They made at least a 555 and the 903.

    I drove a truck that had the 903 V8 Cummins. It made the two stroke Detroits sound like a moped.
     
    Dino soar, Jun 8, 2021
    Dino soar, Jun 8, 2021
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  11. Jun 9, 2021 #9
    wis bang

    wis bang Road Train Member

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    Had a guy in the early 80's with the v12 Detroit who kept up with the first Cat425 in the barn.

    His motto was old HP could keep up with the New...His dad used oversize injectors in his Detroit...everybody said there were from a tugboat engine, LOL
     
    wis bang, Jun 9, 2021
    wis bang, Jun 9, 2021
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  12. Jun 9, 2021 #10
    feldsforever

    feldsforever Road Train Member

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    Wow Magine whats the highest horse power they put out. Not speed. Just horse power. I think the 2014 dd15 I drove was 515. Can't confirm it thou.
    So if the industry standard is 6 or 8. What sets them apart besides the def?
     
    feldsforever, Jun 9, 2021
    feldsforever, Jun 9, 2021
    #10
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