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  1. #1
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    are a3 8l 20 v or 5 v turbo

    hi are audi 20v turbo or 5 v turbo and what better

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  3. #2
    <tuffty/>'s Avatar
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    20 valves total, 5 valves per cylinder... all 1.8t's

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    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

  4. #3
    Jimgrim77's Avatar
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    Same.

    Just vw group marketing.

    Ming Blue S3, Stage 3 Hybrid Turbo, Custom Map, Bosch 480 injectors, Custom TIP, Forge FMIC, 3" Downpipe, 200 Cell Sport CAT, Full Stainless, XS Power Mani, 6 Paddle Clutch, Red silicone hoses, LCR Brembo's, Forge 007p, KW Suspension Kit, Green filter, THS Mounts, 11mm & 16mm spacers, H&R Anti-roll bars, RS6 18" alloys, Michelin PS3's, Red Dog Bone Mount, Neuspeed quickshift, Boost Gauge, Aero wipers, LCR splitter, Forge Tie-bars, LED bulbs, Armrest, Custom TT pedals.

  5. #4
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    20v and 5V are the same engines like others have said. '5V' is Audi history from the late 80's IMSA engines, Audi 90 with UR running gear and 5 pot engines but with a 25 valve head


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    Audi A3 1.8T AUM Sport with more doors.

  6. #5
    nwhiteley's Avatar
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    So why did they go back to a standard 16v head for the 2.0T, was it cost or perhaps something to do with DI?
    2007 A4 2.0TFSI S-LINE

  7. #6
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    My other car is a MINI!!!!

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    I think (and don't quote me on this) it's because the TFSI engines have direct cylinder injection to allow better fuelling control.

    5 valves AND an injector in the cylinder head chamber is probably just a bit too much!
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    Prawns TFSI Turbo'd 1.8T Track Car

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  8. #7
    <tuffty/>'s Avatar
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    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

  9. #8
    Andrew@A.L.D's Avatar
    Cylinder Head Master

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    3 inlet valves and 2 exhaust valves in 4 cylinder engine = 20 valves

    here is what they look like


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  10. #9
    nwhiteley's Avatar
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    Quote Originally Posted by Prawn View Post
    I think (and don't quote me on this) it's because the TFSI engines have direct cylinder injection to allow better fuelling control.

    5 valves AND an injector in the cylinder head chamber is probably just a bit too much!
    Quote Originally Posted by <tuffty/> View Post
    Quote Originally Posted by nwhiteley View Post
    So why did they go back to a standard 16v head for the 2.0T, was it cost or perhaps something to do with DI?

    I thought thats what it would be, its what i refered to as DI, and thanks for the replies.
    2007 A4 2.0TFSI S-LINE

  11. #10
    "Stick a V8 in it!"

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    Yeh, you simply cant fit 5 valves, a spark plug and DI injector into the combustion chamber.


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  12. #11
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    Here's more info and pics of the original Audi 5v combustion chamber, looks very much the same.

    Audi + NASCAR circa 1986 | 3ZERO3 Motorsports Blog
    Audi A3 1.8T AUM Sport with more doors.

 

 

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