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Thread: GT28R Turbo Kit

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    GT28R Turbo Kit

    Hey everyone.

    I've been reading endlessly trying to get info on what exactly i would need to install a GT28R kit onto an A3 1.8T. I havent bought the car yet but looking to get one pretty soon.

    Is it a simple swap from the K03 turbo? as i've seen this kit on ebay and a few other places suggesting that it is as simple as that.
    http://cgi.ebay.co.uk/E2-GT28R-20V-1...b56fc5ffafcd0c

    Basically i want to achieve around 300bhp from a 150 A3 1.8T. What else would i need. i know i'd need a remap as well.

    Thanks for all your help!

    Sal

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    voorhees's Avatar
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    read here
    http://www.audi-sport.net/vb/showthr...igh-Power-info!

    oh and hello and welcome to ASN

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    cool!
    Thanks for the link.

    Sal

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    You would need (at least) S3 injectors (maybe 440's), S3 MAF, new TIP of some description and a stage 3 MAP... to get the best out of it you would also need a 3" downpipe, 200 cell CAT, exhaust and FMIC...

    TBH, a cheaper and more drivable way to achieve similar power would be to go hybrid K03... GT28rs would be a lot laggier than a hybrid K03 and can achieve nearly the same power with the right bits fitted...

    Its advisable to fit rods too if you plan to go much above 300ftlbs of torque..

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

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    Thanks for all the info.

    I was under the impression though that you wont get anywhere near 300bhp with a hybrid ko3 turbo? more like 240-250bhp?

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    ok i've just seen that you can get upto 300bhp with a hybrid although the kit will cost around 1400 which is around the same as the GT28R.

    I'm assuming that i wont need half as many mods to fit a K03s turbo than i would a GT28R. is that right?

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    Blimey.... where did you get 1400 from? A hybrid K03 will cost you around 600 from CR Turbos which is less the half the price of the GT28rs kit you linked too... you would still need all the stuff previously mentioned though regardless of which turbo you went for...

    Get the hybrid and use the money to get rods... or just go proper big turbo...

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

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    lol http://www.jbsautodesigns.co.uk/prod...3-hybrid-turbo
    Goes to show how many people get ripped off!

    So how much am i roughly looking at for a K03s turbo plus other mods to get around 300bhp?

    i really do appreaciate all your help.
    Thanks

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    Dont get this hybird stuff. So A KO3 sent off to have what internals? And what power? and if you have a KO3 what stuff will you need to change?

    1.8t,AUM,Ming blue,Forge TIP,Forge silicone turbo hoses,BMC CDA,Forge 007p,Neuspeed short shift gearlink,powerflow hidden cat back,miltek downpipe,R8 oil cap,HIDs,Custom Code stage 1,de badged,de wipered,FKcoilovers

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    Sorry mate but what are you on about?

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    Well what is a hybird k03?

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    Quote Originally Posted by big_mo View Post
    Well what is a hybird k03?

    A K03 with K04 compressor and turbine... essentially makes it a K04 that fits straight onto the existing K03 hardware... obviously you need the injectors, S3 MAF housing and a few other bits but its the easiest way to get S3 power from an A3 (or any other K03 turbo'd VAG car for that matter)

    One Ibiza I know of with a K03 hybrid fitted has a dyno plot showing 298bhp...

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

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    WOW 298 bhp thats mad. What map was that on?
    I was going to do i K04 but found it was cracked. I may do one of these bad boys. I have the set up apart from FMIC

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    Quote Originally Posted by big_mo View Post
    WOW 298 bhp thats mad. What map was that on?
    I was going to do i K04 but found it was cracked. I may do one of these bad boys. I have the set up apart from FMIC
    Badger 5 Stage 3 map...

    Should be noted that its also had rods fitted as its got 344ftlbs of torque... and 296.4bhp not 298bhp... just double checked

    http://www.seatcupra.net/forums/showthread.php?t=217772

    <tuffty/>
    Last edited by <tuffty/>; 28th May 2010 at 18:47.
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    anyone interested in a K04 023, manifold, downpipe, custome alum tip, oil&water lines for a conversion let me know I can get the whole kit for a very good price.
    S3-8L REVO stage 2, Milltek, 3" DP & custom 3" decat, RS2 spark plugs, 4 bar FPR, Green-Cotton uprated upper/lower boost hose & TIP, Front Zimmerman & Ferrodo. LCR spliter. boost gauge, smoothed AB. Aero blades, H&R 5mm spacers. Best time 14.03sec, 0-62 in 5.7sec. 207gs @ 25psi , polished inlet mani. VAGCOM 805.1

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    So am I right in thinking that if a K03 Hybrid, which is essentially just a standard K04, can make 296 HP and 344 ftlb (albeit with water/methanol injection and uprated rods), then the K04 hybrid should make even better figures than this? (obviously coupled with the right mods and exhaust manifold etc.)
    2003 Dolphin Grey S3, with a few mods....

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    Quote Originally Posted by OllieH View Post
    So am I right in thinking that if a K03 Hybrid, which is essentially just a standard K04, can make 296 HP and 344 ftlb (albeit with water/methanol injection and uprated rods), then the K04 hybrid should make even better figures than this? (obviously coupled with the right mods and exhaust manifold etc.)
    That's what I am thinking too.....

    Because I read on here that a K04 hybrid can barely make 300BHP...

    Needs clearing up
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    Quote Originally Posted by OllieH View Post
    So am I right in thinking that if a K03 Hybrid, which is essentially just a standard K04, can make 296 HP and 344 ftlb (albeit with water/methanol injection and uprated rods), then the K04 hybrid should make even better figures than this? (obviously coupled with the right mods and exhaust manifold etc.)

    couple of things,.. k03/4 hybrid uses rs6 k04 turbine wheel and housing is ported.. so not a direct comparison with k04-023
    also, k03 exhaust manifold flows better than k04 one does in std form.. and the example car with 296bhp was on a hi-flow k03 manifold plus water meth injection running 8.25 degrees more advance, which is potential 10-15bhp contribution

    in case you get your hopes up of a k04 getting 300bhp... which I just dont see being possible on realistic rollers.

    K03/4 hybrids flow 220-227g/s in my experience of mapping and installing them... stage 2 k04's with all the mods are in the range of 200-215g/s

    The k03/4 hybrid named above also runs 26psi peak boost dropping to 22psi at 6000rpm, which most k04's wont sustain.


    regards
    bill
    Last edited by badger5; 30th May 2010 at 16:26.
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    Cheers Bill. So are you saying the K03 Hybrid and K04 Hybrid are the same turbo, just in a different shell, one to fit the oem A3 manifold, and the other the S3 manifold? So both will give the same results when all mapped in with identical mods? (Not taking K04 manifold restriction into account).

    Providing rods are done, what sort of torque figures should the K03/K04 Hybrid get?

    Sorry to the OP for hijacking this slightly, but this info will probably be relevant to you aswell.
    2003 Dolphin Grey S3, with a few mods....

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    Quote Originally Posted by OllieH View Post
    Cheers Bill. So are you saying the K03 Hybrid and K04 Hybrid are the same turbo, just in a different shell, one to fit the oem A3 manifold, and the other the S3 manifold? So both will give the same results when all mapped in with identical mods? (Not taking K04 manifold restriction into account).

    Providing rods are done, what sort of torque figures should the K03/K04 Hybrid get?

    Sorry to the OP for hijacking this slightly, but this info will probably be relevant to you aswell.
    no thats not what i have said..
    k03/4 hybrid is higher spec than the k04-023 is what i ahve said..
    k04 hybrid is larger again, using the billet k06 compressor wheel also, as well as the largest, and clipped rs6 k04 turbine.. so no, k04 hybrid is larger again than the k03/4 one

    in ascending order of flow/power potential

    k03, k03s, k04-001, k04-023/2, k03/4hybrid, k04hybrid

    hope this explains

    As for torque, on an ibiza running a k04 hybrid, we saw 250+g/s airflow, and on the dyno it saw 360lbft torque.. now that engine had rods, is 1900cc, and ran 1.8bar peak boost and 1.5bar sustained past 6krpm

    we will see what speedysteves s3 does when i get to map it on its hybrid k04
    Last edited by badger5; 31st May 2010 at 10:37.
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    Ok, apologies. I assumed when you said K03/4 Hybrid you was talking about both K03 and K04 hybrids, when in fact that is the name for just the K03 hybrid which has the RS6 K04 turbine. Happy days. Yes, will be interesting to see what Speedy Steves produces as I'll be thinking about this line of tuning early next year possibly. I'm liking those torque figures
    2003 Dolphin Grey S3, with a few mods....

 

 

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