Nic Posted April 6, 2008 Share Posted April 6, 2008 So what advantage do they have by fitting steel blades to Hybrids Nic, or is it that they cant get ceramic ones to fit as surely ceramic being faster spooling would be better. And from the early days of being on the bored, UK's where always regarded as slightly more powerfull but as I understand on Hybrids the housing is often bored out slightly no...... They fit steel internals to hybrids because that is all that's available. The housings are machined out to fit the bigger internals which will make a bit more hp The sequential turbo system was not designed to be running high boost pressures and becomes a restriction, there is a limit to the boost you can run before you start generating heat and no more hp. Quote Link to comment Share on other sites More sharing options...
Suprash Posted April 6, 2008 Share Posted April 6, 2008 They fit steel internals to hybrids because that is all that's available. The housings are machined out to fit the bigger internals which will make a bit more hp The sequential turbo system was not designed to be running high boost pressures and becomes a restriction, there is a limit to the boost you can run before you start generating heat and no more hp. And that boost is you are saying 1.2.......I thought Hybrids only produced a little bit extra because you can run them up to 1.4 ??? So whats your thoughts on running hybrids at 1.4 given the restrictions of the sequential system ? Quote Link to comment Share on other sites More sharing options...
dannysupratt Posted April 6, 2008 Share Posted April 6, 2008 so is 1.2 bar good to run on a uk then? Quote Link to comment Share on other sites More sharing options...
Suprash Posted April 6, 2008 Share Posted April 6, 2008 so is 1.2 bar good to run on a uk then? That will be fine.... Quote Link to comment Share on other sites More sharing options...
Nic Posted April 6, 2008 Share Posted April 6, 2008 And that boost is you are saying 1.2/1.3.......I thought Hybrids only produced a little bit extra because you can run them up to 1.4 ??? So whats your thoughts on running hybrids at 1.4 given the restrictions of the sequential system ? Hybrids usually run slightly bigger internals which is why they can flow more air and generate more hp. You could run hybrids and stock turbos as 1.4bar, in the end though the stock system is the limiting factor as the more boost you run the more heat is generated. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted April 6, 2008 Share Posted April 6, 2008 UK Supras should in theory produce a little more power at higher RPM than the J spec due to the exhaust cam being longer duration and slightly higher lift, as for turbos either will make a bit more power/torque if they are bored out and fitted with larger turbines, if done correctly, up to 450bhp is available, without having to wind them up to 1.4 bar, some have said even 500bhp but i find that hard to believe. Quote Link to comment Share on other sites More sharing options...
Scooter Posted April 6, 2008 Share Posted April 6, 2008 JohnA is a member who i think has taken pushing the stock uk turbos to the limit........have a look at his garage and links. Quote Link to comment Share on other sites More sharing options...
Nic Posted April 6, 2008 Share Posted April 6, 2008 UK Supras should in theory produce a little more power at higher RPM than the J spec due to the exhaust cam being longer duration and slightly higher lift, as for turbos either will make a bit more power/torque if they are bored out and fitted with larger turbines, if done correctly, up to 450bhp is available, without having to wind them up to 1.4 bar, some have said even 500bhp but i find that hard to believe. The UK turbos are slightly smaller though, so probably not a lot in it even with the longer duration cam fitted. Quote Link to comment Share on other sites More sharing options...
RiceRocket Posted April 6, 2008 Share Posted April 6, 2008 I think UKs last longer..............? Quote Link to comment Share on other sites More sharing options...
dannysupratt Posted April 6, 2008 Share Posted April 6, 2008 JohnA is a member who i think has taken pushing the stock uk turbos to the limit........have a look at his garage and links. bloody hell he sounds a bit nuts after reading his garage lol Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted April 6, 2008 Share Posted April 6, 2008 bloody hell he sounds a bit nuts after reading his garage lol Bit of a toilet obsession Quote Link to comment Share on other sites More sharing options...
dannysupratt Posted April 6, 2008 Share Posted April 6, 2008 yeah lol Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted April 6, 2008 Share Posted April 6, 2008 The UK turbos are slightly smaller though, so probably not a lot in it even with the longer duration cam fitted. Sorry i was talking about hybrids, but if i remember rightly, will have to check, the Uk turbos actually flow more air:blink: Quote Link to comment Share on other sites More sharing options...
Wez Posted April 6, 2008 Share Posted April 6, 2008 1.2bar should be your limit regardless of jspec turbos, uk turbos or hybrids, you said you have a jspec motor which is MAP based, in stock form this only reads upto 1.2bar beyond this and your fueling is in the hands of the gods, not good. UK/US motors could in theory run higher boost on hybrids as they are MAF based but as Nic said heat will become a problem. Did you have anything else replaced or just the turbos? Quote Link to comment Share on other sites More sharing options...
dannysupratt Posted April 6, 2008 Share Posted April 6, 2008 This thread is just getting more and more complicated to us none turbo minded people (me) Quote Link to comment Share on other sites More sharing options...
Gazboy Posted April 6, 2008 Share Posted April 6, 2008 I think UKs last longer..............? Probably the case. I'd assume the steels would be better coping with 155mph all day every day on German autobahns. Quote Link to comment Share on other sites More sharing options...
Suprash Posted April 6, 2008 Share Posted April 6, 2008 1.2bar should be your limit regardless of jspec turbos, uk turbos or hybrids, you said you have a jspec motor which is MAP based, in stock form this only reads upto 1.2bar beyond this and your fueling is in the hands of the gods, not good. UK/US motors could in theory run higher boost on hybrids as they are MAF based but as Nic said heat will become a problem. Did you have anything else replaced or just the turbos? Im J-Spec MAF so thats good to read, so just need to watch the old AFR's then.... Quote Link to comment Share on other sites More sharing options...
Wez Posted April 6, 2008 Share Posted April 6, 2008 VVTI eh, they still have little 440cc injectors as standard though dont they. Quote Link to comment Share on other sites More sharing options...
Jim_1979 Posted April 6, 2008 Author Share Posted April 6, 2008 Only the turbos were changed to uk ones.... as far as I know. Quote Link to comment Share on other sites More sharing options...
Wez Posted April 6, 2008 Share Posted April 6, 2008 Only the turbos were changed to uk ones.... as far as I know. I guess along with the manifold and downpipe as they are different on UK turbos. Quote Link to comment Share on other sites More sharing options...
Suprash Posted April 6, 2008 Share Posted April 6, 2008 VVTI eh, they still have little 440cc injectors as standard though dont they. Yeah ok, but I mean with bigger injectors, on hybrids using the sequential system, you should be pretty good, or in a lot better position fueling wise at 1.4bar then a pre VVT-i J-spec supra at 1.4bar.......... Quote Link to comment Share on other sites More sharing options...
Jim_1979 Posted April 6, 2008 Author Share Posted April 6, 2008 How has JohnA managed to get 1.6bar out of his setup? Quote Link to comment Share on other sites More sharing options...
Wez Posted April 6, 2008 Share Posted April 6, 2008 With JohnA I would guess lots of meths. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 6, 2008 Share Posted April 6, 2008 He drinks meths? I thought meths drinkers were a dying breed? Quote Link to comment Share on other sites More sharing options...
Wez Posted April 6, 2008 Share Posted April 6, 2008 I think he might possibly be injecting it pre turbo. Quote Link to comment Share on other sites More sharing options...
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