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  1. #1
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    Pikey AGU head re-build question....

    Hi all, I just purchased an AGU head for the princely sum of 25 notes, it came without cam shaft etc so is relatively bare. Its got the original valves in it which I intend to keep but does have a leaky stem seal on one cylinder that shouldn't be too much of an issue though. Sat in my shed I have a pretty much unused (4k) refurbed head which is smallport, my question is is there anything I can't swap between the heads to get one complete largeport?
    Want to get it built up ASAP ready for more toys to fit in one hit but would like to maintain a sensible budget for this project!
    Badger 5 tuned 340 bhp / 350 lbft sleeper

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  3. #2
    <tuffty/>'s Avatar
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    Use whatever valves/spring combos looks the best (lowest mileage), same with followers... don't mix and match if you don't have too..

    Strip valves etc out, clean head, get valve guides check (most likely need exhaust ones replaced), lap valves in, new stem seals, reassemble...

    Done..

    If being use on a VVT enabled engine then reuse your tensioner, cams etc... use new tensioner gasket and half moon seal... use new cam cover gasket set...

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

  4. #3
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    Thanks Tuffty, I'm going to try and use all the AGU valves as it should make lapping easier if those parts are the originals from that head, hopefully anyway lol
    Do you need a special tool to remove the stem seals and this will sound REALLY pikey but TPS just quoted 90 sheets for stem seals, has anyone used aftermarket ones? I'm on an APY so luckily no vvt to worry about just a good opportunity to fit a blanking plate to delete the sai...
    Badger 5 tuned 340 bhp / 350 lbft sleeper

  5. #4
    superkarl's Avatar
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    theres a head kit available from ECP, carparts4less, and pagparts even, that comes with stem seals amongst everything else for a head swap for a very good price

  6. #5
    <tuffty/>'s Avatar
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    Get the gasket set from ECP...
    Elring Audi | Euro Car Parts UK’s No.1 Car Parts Retailer

    stem seals on the inlets are a bugger... I use a tool like this..
    Valve stem seal pliers long | eBay

    You will need a spring compressor like this one..
    VS154 BRAND NEW SEALEY ENGINE VALVE SPRING COMPRESSOR - MULTI VALVE | eBay

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

  7. #6
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    Cheers for that! I'll definately be getting that head set, tps wanted silly money for all of that. I'm starting to think I may have bitten off more than I can chew changing the stem seals though, swapping everything else seems relatively common sense but they look like a right bugger
    Badger 5 tuned 340 bhp / 350 lbft sleeper

  8. #7
    Andrew@A.L.D's Avatar
    Cylinder Head Master

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    I have a few valve spring compressors and find this one to be best for the 20v head

    New 5 in 1 10PCs Valve Spring Compressor Tool Kit Set For Cars Motorcycles Bikes | eBay
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust,
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  9. #8
    <tuffty/>'s Avatar
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    Stripping 20v heads isn't the most fun in the world... but worth doing tbh..

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

  10. #9
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    Thanks Andrew, in an ideal world I'd send the head off to you to make it all shiny and ported and done correctly however that defeats the object of my self inflicted mission so back to school me thinks for this one
    Badger 5 tuned 340 bhp / 350 lbft sleeper

  11. #10
    superkarl's Avatar
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    im stripping 2 on sunday.
    wish me luck

  12. #11
    Andrew@A.L.D's Avatar
    Cylinder Head Master

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    Use the valve spring compressor in the link i posted as its nice and light and has the right cups for the small inlet valves springs
    RIP S3dave/David Marshall stickers now available
    FOR SALE
    Sparco Torino 2 sport seats, None resonated Milltek exhaust,
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts, relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  13. #12
    superkarl's Avatar
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    my dad has one but i've not tried it yet.

    that compressor is saved now tho. cheers

  14. #13
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    if your going to do 2 already one more won't hurt.... good luck with yours, i'm going tool shopping
    Badger 5 tuned 340 bhp / 350 lbft sleeper

  15. #14
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    How did you get on with this?
    13.015@110 mph on a ko3s

    BEACHBUGGYTURBO
    DMC Performance

  16. #15
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    not got round to it yet myself, too busy doing a head gasket change on my supposed daily lol
    Badger 5 tuned 340 bhp / 350 lbft sleeper

  17. #16
    phil miller's Avatar
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    Russ what hasnt been said but defo needs saying, make sure you crank back the tappets in a vice, if you dont you run the risk of valves kissing pistons, that is defo a nightmare job, ive got a BAM in bits at work and had to do this yesterday, not fun

  18. #17
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    Cheers Phil, if i'm totally honest i think i'm gonna get stocksie to do the stem seals, its not laziness i just want it done right and i also have somebody else to blame lol
    Badger 5 tuned 340 bhp / 350 lbft sleeper

  19. #18
    phil miller's Avatar
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    Good plan, adz will love you for giving him that job lol, i took Lee down to see my A3 today, started it up and let it warm up, then gave it a little rev (nothing over 2500) and he wet himself, he said it sounded like an animal, i had to take the keys cos he wanted to drive it lol, think he was gutted that he owns a 2.2 astra coupe lmao

  20. #19
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    i've been telling lee for years now he needs a turbo'd audi in his life now he may listen, big brothers always know best!
    Badger 5 tuned 340 bhp / 350 lbft sleeper

 

 

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