50mm Inlet

Discussion in 'Engines' started by mk1Matt, Jan 19, 2005.

  1. mk1Matt Forum Member

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    Could someone tell me which cars had these as opposed to the 42mm ones?

    Are they before/after a certain year? Or is it pot lock?
     
  2. theboymike Forum Junkie

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  3. iguana Forum Member

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    I though big inlets were on early valvers myself- hence the lack of torque vs 8v complaints when they were new?

    Over the years I've had '87 with 50mm, '90 with 42mm & '88 with 50mm, but never known if they were original or what.

    '90 Corrado KR has 42mm on anyway.
     
  4. GVK

    GVK Paid Member Paid Member

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    My old '87 registered 16v (that had a 86 date stamp on the head) had the small 42.5mm :lol: that is on my car at the moment - I'm putting a 50mm on any day to see what gains or not it'll give. (Going to Stealth next Sunday)
     
  5. HidRo Forum Member

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    GVK, i believe its everybody's wish, that you post up some diferences between them!

    I have a 86KR that came with a 42mm, and my friends 88 and 89 KR came with 50mm
     
  6. DEX

    Dex Paid Member Paid Member

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    my '89 came with a 50, don't even know what my '88 has on it...
     
  7. M.C. Forum Member

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    If you are after one to go on your Mk1, then don't use a mk2 16v one, the linkages are on the wrong side of the body.

    I visited the breakers until I found a 5cyl audi estate. It had a 52mm large TB and I matched the manifold to it. Very simple job.

    MC
     
  8. Brookster

    Brookster Paid Member Paid Member

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    if you want a 50mm manifold i've got one ;) for sale [:D]
     
  9. Nurburgring Forum Member

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    Stealth have got my plot when i had a 41mm on - now i have the 50mm. Am going to Stealth next Sunday too - so hopefully between us we will have the definative answer on the manifold issue :clap: :thumbup: [:D] ............................................................ ..........then again i'm sure the topic will come up again :lol: :lol: :lol:
    Edited by: Nurburgring
     
  10. KeithMac Forum Junkie

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    My `89 had a 50 on it.
     
  11. GVK

    GVK Paid Member Paid Member

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    Got around to fitting my 50mm inlet manifold today, want to see what gains if any it offers over the 42mm I've had on the car since I fitted the 9A.

    Old 42mm

    [​IMG]

    Old inlet off and the flowed head still looks nice and smooth :)

    [​IMG]

    Bling! - A mixture of black basecoat and some Nissan gold as we had ran out of VW Schwarz metallic they normally keep in work for when I scrape or bend something - where I masked up the DOHC 16v to polish the flat surface the masking tape pulled a couple of bits of laquer off..grrr[xx(]

    [​IMG]

    Fitted

    [​IMG]

    Going to Stealth next Sunday for the VR6 OC RR day, so will report back with the findings of the dyno runs - it's louder so it's GOT to be faster - right?? :lol:

    [​IMG]
    Edited by: GVK
     
  12. DAVE 2227 Forum Junkie

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    Does ECU have to match the size of inlet also?.
    It will be intresting to see the results of the change of size.
     
  13. GVK

    GVK Paid Member Paid Member

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    I've got the early ECU from the '87 16v on mine Dave, according to Vince @ Stealth, the early ECU doesn't retard the timing at 5k like the later ECU does. Will post up the results after next Sunday's RR day. :p
     
  14. GVK

    GVK Paid Member Paid Member

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    For future reference, gaskets needed to swap the manifolds are

    027 129 717F (between the two halves of inlet manifold)
    037 129 717F (head to manifold flange)
    037 133 037A x2 throttle body
    027 906 179A (cold start housing flange.)
     
  15. Paul 16v Forum Member

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    Is that just normal paint that you have used on that manifold?
     
  16. GVK

    GVK Paid Member Paid Member

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    Yep, two pack basecoat and laquer, the rocker cover has been done the same and that's been on since the summer time.
     
  17. GVK

    GVK Paid Member Paid Member

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    [​IMG]

    All I need find now is a 4 branch. :)
     
  18. Tubthumped Forum Junkie

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    And a 3.94 FD

    And a roll cage.

    And another bucket seat.
     
  19. GVK

    GVK Paid Member Paid Member

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    And a windscreen [​IMG]
     
  20. Tubthumped Forum Junkie

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    And learn how to [​IMG]
     

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