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Engine swap Q - APY - APX swap

Discussion in 'A3/S3 Forum (8L Chassis)' started by ci-ryder, Jun 30, 2011.

  1. ci-ryder
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    ci-ryder Member

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    [Jun 30, 2011]
    Hopefully this is a simpe Q, I bought my first S3 about 2 months ago but after driving it for just 3 weeks I managed to blow 3 coilpacks, destroy 8 valves and crack the cylinder head during a brief moment of accelaration getting on to the motorway (not sure all this happened in one incident).

    The car has been sat around looking very sorry for itself since, after the engine shop gave me the news about my head I am after another engine and have sourced a bare (head & block) low mileage APX unit.

    The engine in my car is an APY, my Q is simply would I have any issues running the APX unit using my APY ecu (car was running a R-Tech stage 1 map). I just want the garage to drop in the APX unit + new clutch & flywheel and bolt everything back up.

    Cheers
    #1
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 30, 2011]
    APX is a 210 TT lump isn't it? should all be fine as that has the 20mm wrist pins etc...

    20v engines are pretty interchangeable tbh mate... biggest issue is the gudgeon/wrist pin size... 19mm on lesser power engines typically and 20mm (stronger + stronger rods) on the 210/225's (AGU A3's being an exception I believe)...

    APX should also have the SAI being the earlier code... pretty sure the APX is the TT equiv of the S3's APY then the higher power TT's leap frogged AMK's and went to BAM

    <tuffty/>
    Last edited: Jun 30, 2011
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  4. s3dave
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    s3dave TFSI Hybrid

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    [Jun 30, 2011]
    Apx was an early 225 lump from the TT from 98
    #3
  5. ci-ryder
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    ci-ryder Member

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    [Jun 30, 2011]
    Thanks for the quick response, much appreciated I was worried that I was going to have to get involved in getting things decoded I just want the APX head and block dropped in and all my old ancil's bolted up and just to have my car back and then maybe I can finally get on with the mods I had already bought for it before it went pop.

    Cheers
    #4
  6. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 30, 2011]
    #5
  7. ci-ryder
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    ci-ryder Member

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    [Jun 30, 2011]
    Thanks for the link, I am looking forward to getting it on the road now!! - I just hope I have no more problems I have now spent more on parts than the car cost.
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  8. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 30, 2011]
    Welcome to S3 ownership lol ;P

    <tuffty/>
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  9. ci-ryder
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    ci-ryder Member

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    [Jun 30, 2011]
    Yep I don't think I was really prepared for so many bills!! Though once the engine is done it will also have had the below replaced during my short ownership:-

    Low mileage turbo (car had done 130k I bought a K04 from a 12k crashed TT)
    Injectors, manifold, fuel pump & fpr from that TT
    New MAF
    Replacement Clutch & Flywheel
    De-cat pipe
    Fmic
    Forge 007p
    Forge actuator
    Compbrake shortshift
    new top mounts + weitec coilovers
    LCR front brakes - new drilled &grooved discs + ebc redstuff pads at the rear too + braided lines
    Silcone TIP
    BMC Cai
    SFS 10pc coolant hose kit
    Keskin kt4 18" alloys
    Compbrake Adjustable tie bars

    I only bought this as I thought I wouldn't mod it/spend loads on it, I was very, very, very wrong...............
    Last edited: Jun 30, 2011
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  10. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 30, 2011]
    Me too funny enough... :D

    <tuffty/>
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  11. S3MMA
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    S3MMA Member

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    [Jun 30, 2011]
    me 3!
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