Golf mk2 racecar (dirt) - need suggestions on 9A engine.

Discussion in '16-valve' started by Rakovs, Feb 8, 2019.

  1. Rakovs New Member

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    Hi, so I have just purchased a bit beaten golf mk2 car for dirt race purposes (cross). At the moment, from what I see, it has 2.0 2E engine with DX 8V head and a single weber38 carb on it. (I'm not a very experienced mechanic) and I don't know how many hp it has at the moment (hasn't been on the dyno yet, just one test race in icy track)
    It has a short gearbox with 4.84 main ratio and 1.64 ratio for 3rd gear.
    I have a spare vw 9A engine (stock and without any wires and stuff).
    Any suggestions on how I can get the most hp out of it, should I leave the engine it has or put in the 9A or search for something else (ABF maybe and no fancy stuff)
    Have been searching for some time now and I see that people say that I can get ~200 hp out from the 9A, can someone please tell me in which direction should I go to achieve that? Because I don't have a lot of time (first race is at the beginning of May) And I don't want to start in the wrong direction...
    Btw, the race rules do not allow turbos.
    Hope I posted in the right place...

    Thank you!



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    holdawayt likes this.
  2. Jon Olds Forum Junkie

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    9A or ABF will give similar powers, bore/stroke the same. Different length rods so the piston dwells longer at TDC with the longer rod.

    Everything depends on budget (time/money) Shopping list of parts for the 9A;
    (budget)
    inlet manifold to suit carbs, twin sidedraft ideally
    exhaust manifold: std will do it to 170hp
    distributor with centrifugal advance

    After that modified head and cams, ideally with more compression (expensive bit: easy £2K spend alone)
    Jon
     
  3. Rakovs New Member

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    Thanks for the answer!
    It already has an exhaust manifold 4-2-1.
    Should I go for twin carbs or bike carbs?
    Also any suggestions on ECU?
    btw my old man is a great fabricator and he can do stuff but both of us are new to this. So I need to understand what to do to make it right.

    I guess if I don't make in time I could go with the engine setup it has right now and swap later.

    Also, I saw a listing with these (empi Hpmx 44):
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    Would these do the job?

    FYI: I'm not from the UK, and English is not my native. So sorry if I express myself incorrectly :)
     
  4. holdawayt New Member

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    Your English is better than most of the natives on here don't worry :lol:

    If you can get hold of one, I'd go for an ABF running on K-Jet from a 1.8 16v KR. You can see some decent power using this setup and it's very reliable.
     
  5. Jon Olds Forum Junkie

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    Depends on how far you want to go with the spec. I run twin weber sidedraft carbs on two of my rally type 16V's without issue. Positives are they are simple,
    very very tunable, reliable and sensible money (£500) Power is within 5% of a throttle body system costing £2500
     
  6. Jon Olds Forum Junkie

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    Bike carbs could be a cheap(er) quick upgrade also. For some reason the cold starting can be an issue, I am told. Jetting will be restricted to varying main jet size only, I would imagine. Last jet I bought for a Kawasaki half the size of my little fingernail was £35 and that was nearly 10 years ago. Whatever you go for fit a monster air filter
     
  7. Jon Olds Forum Junkie

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    First thing with those downdrafts is to see what size chokes they run. If its less than 32-34mm they are not likely to be suitable
     

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