Scoboblio Posted October 11, 2007 Share Posted October 11, 2007 .... Quote Link to comment Share on other sites More sharing options...
Bob Posted October 11, 2007 Share Posted October 11, 2007 And I was being nice, too. What a bell-end. Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted October 11, 2007 Share Posted October 11, 2007 Ahh so he is 18, makes more sense now i guess Quote Link to comment Share on other sites More sharing options...
Ian C Posted October 11, 2007 Share Posted October 11, 2007 Charitable mood over. No tolerance for whining kids pretending they know what they are doing. -Ian Quote Link to comment Share on other sites More sharing options...
Matt H Posted October 11, 2007 Share Posted October 11, 2007 sounds like an amazing set up if its possible...would be far better than a single IMO in everyway+ Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted October 11, 2007 Share Posted October 11, 2007 would be far better than a single IMO in everyway+ In what ways specifically? Sounds good apart from all the fabrication and cost You will need all the supporting mods that a single will plus the cost of fabbing the manifolds (initially at least) Quote Link to comment Share on other sites More sharing options...
colsoop Posted October 11, 2007 Share Posted October 11, 2007 In what ways specifically? Sounds good apart from all the fabrication and cost You will need all the supporting mods that a single will plus the cost of fabbing the manifolds (initially at least) I read through the sp performance thread too and he reckoned on $8 - $10K for the kit. With the exchnage rate the way it is that doesn't seem too bad to me. Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted October 11, 2007 Share Posted October 11, 2007 End of the day some people prefer twins some prefer the single, im not convinced either is 'better' as such, more 'better for me' Quote Link to comment Share on other sites More sharing options...
Thorin Posted October 11, 2007 Share Posted October 11, 2007 http://www.supraforums.com/forum/showthread.php?t=444569&page=12 Quote Link to comment Share on other sites More sharing options...
tDR Posted October 11, 2007 Share Posted October 11, 2007 I read through the sp performance thread too and he reckoned on $8 - $10K for the kit. With the exchnage rate the way it is that doesn't seem too bad to me. That's just silly IMO - again we're back to may as well go single. Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted October 11, 2007 Share Posted October 11, 2007 That's just silly IMO - again we're back to may as well go single. yeah but that depends in weather you want a single or relly like the twin setup. I can see the arguments either way! Quote Link to comment Share on other sites More sharing options...
Gazboy Posted October 11, 2007 Share Posted October 11, 2007 http://97supraturbo.com/GT28R%20Turbos/GT28R-CT12%20Conversion.pdf Quote Link to comment Share on other sites More sharing options...
Matt H Posted October 11, 2007 Share Posted October 11, 2007 In what ways specifically? The first question yo have to ask is how much power do you want? personally, 500rwhp is more than enough for me, so a twin set up delivering 500rwhp has got to be better than a single putting out the same. Effectively, your just getting less lag, which is such a bonus in my opinion, i hate lag, its whats stopping me going single. If one turbo was good enough, toyota would probably have just just the one on in th firtst place Quote Link to comment Share on other sites More sharing options...
tDR Posted October 11, 2007 Share Posted October 11, 2007 The first question yo have to ask is how much power do you want? personally, 500rwhp is more than enough for me, so a twin set up delivering 500rwhp has got to be better than a single putting out the same. Effectively, your just getting less lag, which is such a bonus in my opinion, i hate lag, its whats stopping me going single. If one turbo was good enough, toyota would probably have just just the one on in th firtst place That's ill-founded IMO Matt. Why has a twin setup got to be better? The OEM turbo's were designed back in 1992 for the cars release in 1993 - that's 15 years ago. Turbo design has come a long way since then meaning you can have a much larger unit spooling just as fast as smaller units of old. Take the evolution of Toyota's 1JZ-GTE engine for example - it started with twin turbos, then in a redesign in '98 got vvti and just one turbo, producing more power without sacrificing driveability and with added reliability - the sequential system is an over complex and tempramental piece of design work. You can also look at some of the singles on this forum - several making more boost sooner than the stock twins in sequential mode, in other words making more boost a considerable amount sooner than hybrid twins in sequential mode. Given cost vs. further development of hybrid setups for the 2JZ-GTE, it still looks like a well chosen single is the way to go IMO. Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
Matt H Posted October 11, 2007 Share Posted October 11, 2007 That's ill-founded IMO Matt. Why has a twin setup got to be better? The OEM turbo's were designed back in 1992 for the cars release in 1993 - that's 15 years ago. Turbo design has come a long way since then meaning you can have a much larger unit spooling just as fast as smaller units of old. Take the evolution of Toyota's 1JZ-GTE engine for example - it started with twin turbos, then in a redesign in '98 got vvti and just one turbo, producing more power without sacrificing driveability and with added reliability - the sequential system is an over complex and tempramental piece of design work. You can also look at some of the singles on this forum - several making more boost sooner than the stock twins in sequential mode, in other words making more boost a considerable amount sooner than hybrid twins in sequential mode. Given cost vs. further development of hybrid setups for the 2JZ-GTE, it still looks like a well chosen single is the way to go IMO. Cheers, Brian. I understand what your saying but were talking about a modern day hybrid here, its the internals that count, not its housing which is the only think that comes from 15 years agos technology. Modern twins over modern single, no comparrision Quote Link to comment Share on other sites More sharing options...
tDR Posted October 11, 2007 Share Posted October 11, 2007 I don't think it is just the internals that count - I'm no turbo guru by any means, many members of the forum have much more experience in that regard than me - however, the housings and stock manifold cause a severe restriction in flow. This causes the internals to not be as efficient as they perhaps could be and we have evidence of this in the way that hybrids take longer to spool than stock twins. Quote Link to comment Share on other sites More sharing options...
Matt H Posted October 11, 2007 Share Posted October 11, 2007 the housings and stock manifold cause a severe restriction in flow. This causes the internals to not be as efficient as they perhaps could be and we have evidence of this in the way that hybrids take longer to spool than stock twins. I am not either but i cant see the housing causing any problems for whats flowing in it, but i can see the manifold being. Did that qouted price not include the required manifolds?! Quote Link to comment Share on other sites More sharing options...
grahamc Posted October 11, 2007 Share Posted October 11, 2007 http://97supraturbo.com/GT28R%20Turbos/GT28R-CT12%20Conversion.pdf now that looks stunning... Quote Link to comment Share on other sites More sharing options...
tDR Posted October 11, 2007 Share Posted October 11, 2007 Not sure, I lost the will to live half way through the linked thread. If so then there's not much stock about such a setup - hence peoples confusion over the term hybrid being used. Hopefully a turbo expert or two can comment! Quote Link to comment Share on other sites More sharing options...
carl0s Posted October 11, 2007 Share Posted October 11, 2007 Take the evolution of Toyota's 1JZ-GTE engine for example - it started with twin turbos, then in a redesign in '98 got vvti and just one turbo, producing more power without sacrificing driveability and with added reliability - the sequential system is an over complex and tempramental piece of design work. Ah, but the 1JZ-GTE didn't ever have a sequential setup did it? It was two small turbos running in parallel, so pretty much same lag as one large turbo, isn't it? Quote Link to comment Share on other sites More sharing options...
Cable Posted October 11, 2007 Share Posted October 11, 2007 I rather one big kick of a single or parallel setup than two smaller kicks from the sequential Quote Link to comment Share on other sites More sharing options...
tDR Posted October 11, 2007 Share Posted October 11, 2007 Ah, but the 1JZ-GTE didn't ever have a sequential setup did it? It was two small turbos running in parallel, so pretty much same lag as one large turbo, isn't it? It started with two teency weency ceramic turbos even more fragile than the JDM MKIV TT's. Full boost by 3k RPM IIRC from driving my JZA70. Just highlighting how Toyota's design focus changed - they didn't decide in the redesign to give it a sequential setup, they thought let's single it. Quote Link to comment Share on other sites More sharing options...
Gazboy Posted October 11, 2007 Share Posted October 11, 2007 Just highlighting how Toyota's design focus changed - they didn't decide in the redesign to give it a sequential setup, they thought let's single it. I haven't read all SF thread (read the background thread) just yet either. So far it sounds like a GT28 (intake side) has been mounted to a CT12 exhaust side, bolted onto a heavily reworked stock manifold. This could be bollocks though Re the 1jz- it could be political as well as financial not to give the Soarer the sequential set-up, afterall Toyota didn't ditch the sequential set-up in 1998 either Quote Link to comment Share on other sites More sharing options...
Gazboy Posted October 11, 2007 Share Posted October 11, 2007 Anyone else get a shitty PM via SupraForums from the OP? Quote Link to comment Share on other sites More sharing options...
Homer Posted October 12, 2007 Share Posted October 12, 2007 Anyone else get a shitty PM via SupraForums from the OP? Nah, but my SF username doesn't match this one. I did get this though, rather amusing. Little does Johan know, once I actually owned a Vauxhall Viva. A beast it was too! Lol hurt did it you that you didnt always are right lol :-P BR Johan P.S I have ha lots of highpowered cars so i am just not that impressed by ppl that have had there first sportscar and think that they know it all D.S Quote Link to comment Share on other sites More sharing options...
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