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Thread: ko3s vs ko4?

  1. #1
    Paradox1's Avatar
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    ko3s vs ko4?

    not your typical thread here,just looking for reviews of people who have owned both setups bearing in mind this will be on a fwd.I currentlt have a stage 2 ko3s but I'm looking to upgrade at some point in the new yr. all comments welcome!

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    camscockle20vT's Avatar
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    K03 hybrid is the way forward, putting a k04 on would take alot of extra mods, where as the hybrid would be bolt on.

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    <tuffty/>'s Avatar
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    Quote Originally Posted by camscockle20vT View Post
    K03 hybrid is the way forward, putting a k04 on would take alot of extra mods, where as the hybrid would be bolt on.
    While a K03 hybrid is technically a bolt of there is still enough work involved to get it running... a 210/225 (S3, TT, LCR) MAF housing, 210/225 (S3, TT, LCR) injectors, custom map and arguably rods... more so on a the spiky K03 hybrid than a std K04...

    Would also need a silicon TIP etc...

    The advantage of the K03 hybrid on a K03 engine is you can reuse the mods you may already have made... 3" DP, FMIC etc....

    The K03 exhaust manifold is less restrictive than the K04 one too

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    camscockle20vT's Avatar
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    Quote Originally Posted by ;1430146
    While a K03 hybrid is technically a bolt of there is still enough work involved to get it running... a 210/225 (S3, TT, LCR) MAF housing, 210/225 (S3, TT, LCR) injectors, custom map and arguably rods... more so on a the spiky K03 hybrid than a std K04...

    Would also need a silicon TIP etc...

    The advantage of the K03 hybrid on a K03 engine is you can reuse the mods you may already have made... 3" DP, FMIC etc....

    The K03 exhaust manifold is less restrictive than the K04 one too

    <tuffty/>
    Yeh theres alot involved either way, but atleast it fits without changing exhaust mani aswel.

    Going to check out a k03 tomorro and if i get it im going to have ago at taking it apart beachbuggys thread has inspired me to have ago as its probly the only way il own a ko3 hybrid as im not paying big money on my daily wopper.

    I take it a k03 from an agu would be able to be hybrid? ( not saying ill succeed but im having ago non the less lol)

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    Quote Originally Posted by camscockle20vT View Post
    Yeh theres alot involved either way, but atleast it fits without changing exhaust mani aswel.

    Going to check out a k03 tomorro and if i get it im going to have ago at taking it apart beachbuggys thread has inspired me to have ago as its probly the only way il own a ko3 hybrid as im not paying big money on my daily wopper.

    I take it a k03 from an agu would be able to be hybrid? ( not saying ill succeed but im having ago non the less lol)
    I'll get a take apart/rebuild thread up this week for all those that asked.

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    camscockle20vT's Avatar
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    Quote Originally Posted by beachbuggy View Post
    I'll get a take apart/rebuild thread up this week for all those that asked.
    That would be great, do you know if the standard ko3 from an agu will convert to hybrid?

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    superkarl's Avatar
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    All ko3s can be hybrideded. All havr same housings. You'd need to buy a ko4 too. And have it machined

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    Quote Originally Posted by superkarl View Post
    All ko3s can be hybrideded. All havr same housings. You'd need to buy a ko4 too. And have it machined
    Not strictly true. It depends on what hybrid you build. The k03s has a larger compressor housing so it will take a k04 compressor but leaves a thin outlet where as the k03 wont.

    However they will both take k04 turbines and both will take the compressor from the k04-015 which is what most hybrids are made from.

    The generic hybrid you buy off the shelf is a k04 shaft/turbine mated to a k04-015 compressor or original k03s which is very slightly larger. I plan on covering both a k03s-020 and a k03-015 hybrid build . Part numbers and machining requirements. The ultimate k03 hybrid though is one that uses the internals from my k04 hybrid in a k03s but has an adapted k04 compressor housing to look like a k03.
    Last edited by beachbuggy; 3rd December 2011 at 22:59.

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    Paradox1's Avatar
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    thanks for that,will be interesting to read that thread.k04 hybrid inside a ko3s shell sounds my cuppa T.

    I got a spare ko3 ready to be rebuilt but was having second thoughts about it

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    A K03 hybrid when done right can be very quick! My friend has one in his 1.8T Corrado and that thing shifts! In your case, i would choose a K03 hybrid over a K04.
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    Paradox1's Avatar
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    that carrado sounds fun!only problem is I'm not too sure where to get the work done.spoke to a guy a ukmk4s forum and he had endless trouble with a well known company which ended up going to court.

    I would like the hybrid to be as reliable as the standard turbo

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    Paradox1's Avatar
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    where's the best place for a turbos rebuild?for reasonable cost and warranty?

 

 

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