Ive seen a post on here about a K03S hybrid but id like to know what parts you actually need to build this? I done a search and found bits n bobs everywhere. would be nice to keep it to one post 
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It is a ko3s body with ko4 internals. You need to get both turbos then machine the ko3s out to fit the bigger ko4 blades, then bolt it together and get it balenced all of which will cost you 100's so prob best to look at other routes, or buy a jbso4 or a second hand amo4 as thats what these are.
Hope this helps.
Hope this helps.
i've read all the threads because i was interested, as a k03s is not enough for me but most of the other direct fitting options aren't cheap. however some people make out its as easy as going into halfords and buying one when its not...very few companies actually develop and sell k03s hybrids for RHD transverse cars. and the few that actually do charges alot and have little or no credibility. since the lack of experience using a turbo that can be classed as a k03s hybrid i lost interest.
however the funny thing is, the differences what make a turbo a k03 or k03sport are what you'll be replacing. so it would be cheaper stripping down a k03 unit rather than spending 250quid on a k03sport, only to chop it up into little bits
however the funny thing is, the differences what make a turbo a k03 or k03sport are what you'll be replacing. so it would be cheaper stripping down a k03 unit rather than spending 250quid on a k03sport, only to chop it up into little bits
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sorry to sorta change the the thread abit but i just found this http://cgi.ebay.co.uk/NEW-K03S-VW-G...ryZ72205QQssPageNameZWDVWQQrdZ1QQcmdZViewItem but dont that look like a normal k03? and not a k03s
Ive got an unsilenced k03s on mine and you can definatly hear the spool up sounds great, need to get it remapped now and hopefully should be louder as its going to produce more boost.
If you have the extra mods already then changing k03 to k03s is not that hard. Much better of buying a hybrid k03s turbo than doing it diy as it takes alot of skill, knowledge and the correct tools. There is one US option for about £500 but its for LHD and if that makes a difference I do not know. AET and Turbo dynamics do them aswell but they are nearer the £1000 mark and they do not state the spec. TTS do a hybrid k03 which they rate at 260bhp if I remember rightly. Dont know if any of them do exchange though as that may bring the price down a little bit.
The parts changed to make a k03s hybrid doesnt mean you might aswell start with a k03 as far as I know because the compressor wheel and bearings are changed and the housing milled out for a hybrid and the only difference between a standard k03 or k03s is the actuator and silenced vs unsilenced which are not changed when making a hybrid.
The parts changed to make a k03s hybrid doesnt mean you might aswell start with a k03 as far as I know because the compressor wheel and bearings are changed and the housing milled out for a hybrid and the only difference between a standard k03 or k03s is the actuator and silenced vs unsilenced which are not changed when making a hybrid.
HarveyGTI
Guest
not worth the money, either just stick on a K03s or go BT route
the amount turning a K03 into a hybrid would cost more then just bolting on a K03s, so its pointless really
the amount turning a K03 into a hybrid would cost more then just bolting on a K03s, so its pointless really
HarveyGTI
Guest
jbs04 turbo is quite expensive isn't, or cetianly the gains you get compared to the GT28rs setup etc over cost
So basically (before we go completely off topic) you can get a KO3 turbo and add KO4 internals to make a KO3 hybrid?? Im assuming this would pump out a few extra horses?
I bought mine from a guy on here who has a mk2 and was doin a 20v conversion with big turbo i got it for £170 with only 5000miles on it and delivered so i got a good deal, i fitted it at work on ma day of so didnt have to pay for fitting
But the cost of this to be done would be quite great i would have thought like said just buy an eliminator kit
HarveyGTI
Guest
yeah basically, but the cost to do that, unless done by yourself, would not be justified from the BHP you would get
I think the AM04 boys, which is basically what the hybrid k03s is, got about 260bhp from it, for the time and effort spent doing it, not worth it IMO
on the road difference I don't think there would be much in it between the K03s and the hybrid K03s....
K03s hybrid would a fair bit of difference over a standard k03s I would think with a minimum of 10bhp more and probably a bettet torque curve.
Doing a diy k03s hybrid would be too expensive but if say you can get one for under £600 from either the states or over here I think its worth it over eliminator. Yes the eliminator kits are getting cheaper but more is needed for them to reach their full potential as we have seen with cupra_matt. The hybrid k03s should give about 26oish bhp and you would have all th mods already like turbo back exhaust, fmic, tip etc as you would have before you do eliminator. I will prob get one when funds allow but Ive got things to do before that.
Doing a diy k03s hybrid would be too expensive but if say you can get one for under £600 from either the states or over here I think its worth it over eliminator. Yes the eliminator kits are getting cheaper but more is needed for them to reach their full potential as we have seen with cupra_matt. The hybrid k03s should give about 26oish bhp and you would have all th mods already like turbo back exhaust, fmic, tip etc as you would have before you do eliminator. I will prob get one when funds allow but Ive got things to do before that.
HarveyGTI
Guest
but i mean what to the K03s hybrids get in reality, 10bhp more, but depends what the peak power then sits at? I vaugely remember the AM boys saying it went right to the red line at 7k when they were building and testing the design
i think the k03s when tuned peaks at about 6400rpm....i think, cant remember the precise figure. Certianly top end that would be noticeable
The limit to the k03 and k03s turbo is the amount of air it can flow. Having a milled out housing and using a big compressor wheel will increase the amount of air it can flow. The real world gains of a k03s are always questioned as to whether they can in reality produce figures like 250bhp and many people say 230ish is their limit. If the hybrid k03 that TTS have gives 260bhp there would be a good chance that a hybrid k03s would produce at least that which is a 20-30bhp increase. The increase in torque and bhp would probably be spread further over the rev range but either way the turbo is resticted by its housing size and I believe most of the k03/k03s units get asmatic near the red line.
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