AJI Posted June 26, 2004 Share Posted June 26, 2004 I'm going to start to gradually increase my boost up a notch from 1.2bar to something like 1.3 (or even higher ). I'm running stock UK-spec turbos and this obviously will mean that the life span is going to reduce by 'x' amount. When they eventually give up (which I hope is not going to be soon!), I'm thinking of upgrading to something that can take higher boost and not complain about it. As I see it the options are big single or hybrid sequentials. Are those my only options for the UK-Supra or are there other turbo setups out there that I am not aware of? My preffered option would be the hybrid twin-turbo route but would this mean that if I went for these that I'd have to upgrade/alter other parts of the engine? Or are they simply a bolt on and away you go? Link to comment Share on other sites More sharing options...
Darren Posted June 26, 2004 Share Posted June 26, 2004 Bear in mind that u always need to make sure you have correct fuelling for higher boost settings etc...... HKS do a twin turbo kit for the Supra... Link to comment Share on other sites More sharing options...
Gaz Walker Posted June 26, 2004 Share Posted June 26, 2004 Aron, I am sure Kevin will be on hand to demonstrate the capabilities of a single car at our next meet - I am sure you will be converted Gaz. Link to comment Share on other sites More sharing options...
Paul Laing Posted June 26, 2004 Share Posted June 26, 2004 Whenever the next meet may be.... Link to comment Share on other sites More sharing options...
Dragonball Posted June 27, 2004 Share Posted June 27, 2004 You have a choice Get Hybrids if you cant get Insurance for a single and the cost of going single is outside your budget (Even the smallest 'budget' single kit will cost £4000 with peripherals required) Go Single if you can get insurance and have the money Personally (and this might cause some eyebrows raised!) I would stick with the stock set up and just refurb the turbos and get them refitted - £1000 The Supra is a great car and basically do you REALLY require that much more than 1.1 boost / decatted In fact - I might start a poll!! Link to comment Share on other sites More sharing options...
AJI Posted June 27, 2004 Author Share Posted June 27, 2004 I have thought about the single route but the thing that is putting me off is the increased lag time. I like a car that responds quikly when you need the power. I'm not into just straight line stuff, I'm more into blasting my car round the twisty sections of road and therefore I need quick respone when it comes to power delivery. This is mainly why I want to try and keep my car as a sequential setup. So are these hybrids a simple conversion? Is it a case of take off stock turbos, then bolt on hybrids and wack up boost and then off you go? Would the 550 UK-injectors be o.k. to run at say 1.4-1.5bar reliably? Link to comment Share on other sites More sharing options...
Paul Laing Posted June 27, 2004 Share Posted June 27, 2004 Aron, Hybrids aound good but some people say there not much better than stock, why not go FMIC and run 1.3 bar like i will be soon Link to comment Share on other sites More sharing options...
Syed Shah Posted June 27, 2004 Share Posted June 27, 2004 I think a small single would suit your goals much better. Providing the insurance and costs can be met, as Paul says. It will down a little on low rpm power, but who goes through corners in 6th?? It WILL provide full boost quicker, and make more power than hybrids. By far the better solution for your needs. Hybrids are laggy IMHO for the power gained (not very much). In regards to boost, eirther the single or the hybrids can run 1.5bar (though EGTs are going to be borderline on the hybrids), providing the fuel is good enough (a bit of toluene with Optimax should be fine). Link to comment Share on other sites More sharing options...
Dragonball Posted June 28, 2004 Share Posted June 28, 2004 Originally posted by AJI I have thought about the single route but the thing that is putting me off is the increased lag time. So are these hybrids a simple conversion? Is it a case of take off stock turbos, then bolt on hybrids and wack up boost and then off you go? Would the 550 UK-injectors be o.k. to run at say 1.4-1.5bar reliably? For instance out stage 3 hybrids spool at 2300rpm (stock jap approx 1600? and UK's at 2100?) To hybrid you take the existing turbo and rebuild using steel and 360 bearings etc etc - and enlarge the wastegate (with the miami-gt one anyway!) Really these produce much more at 1.3 that there is no need to go higher Paul - you really do not listen!!! There loads of threads on this Stick a FMIC by all means - but keep them below 1.2 or you will be spending loads on new turbos eventually!! Take heed - I didn't!! Link to comment Share on other sites More sharing options...
AJI Posted June 28, 2004 Author Share Posted June 28, 2004 Hmmm.... decisions decisions... Don't know if this question has been asked before but is it easy enough to tell the stock turbos to spool up earlier? Or is there simply not enough exhaust gas flow to do it at lower revs than 2100rpm ? So a small single would give the best gains. I haven't realy driven a Supra (in anger should I say) that had a single turbo on it. How responsive are they, say if you went into a corner where there was a short burt before the next one, would it spool up and provide power in time? Link to comment Share on other sites More sharing options...
Dragonball Posted June 28, 2004 Share Posted June 28, 2004 Originally posted by AJI Hmmm.... decisions decisions... Don't know if this question has been asked before but is it easy enough to tell the stock turbos to spool up earlier? Or is there simply not enough exhaust gas flow to do it at lower revs than 2100rpm ? So a small single would give the best gains. I haven't realy driven a Supra (in anger should I say) that had a single turbo on it. How responsive are they, say if you went into a corner where there was a short burt before the next one, would it spool up and provide power in time? You can improove the response time through the use of gain on the boost controller The 'lardy' old UK spec comes on at, what, 2100 / 2200 rpm (LOL!) Hybrids at 2500 rpm Singles 3000 rpm+ Once going people say there is nowt like a single - I mean look at the speeds the Jason and Dude (to name but two) can achieve Link to comment Share on other sites More sharing options...
Seb Posted June 28, 2004 Share Posted June 28, 2004 Aren't some small singles able to give positive boost from just over 2k and full boost by around 3.5k? That's still better than my UK. Seb Link to comment Share on other sites More sharing options...
Gaz Walker Posted June 28, 2004 Share Posted June 28, 2004 Originally posted by Seb Aren't some small singles able to give positive boost from just over 2k and full boost by around 3.5k? That's still better than my UK. Seb They sure are... Gaz. Link to comment Share on other sites More sharing options...
Dragonball Posted June 28, 2004 Share Posted June 28, 2004 Originally posted by Gaz Walker They sure are... Gaz. Yeah - the BL kit is great:thumbs: Link to comment Share on other sites More sharing options...
Gaz Walker Posted June 29, 2004 Share Posted June 29, 2004 Originally posted by Paul E Yeah - the BL kit is great:thumbs: And so is the SP kit, and I'll give you a great price on it Gaz. Link to comment Share on other sites More sharing options...
Dragonball Posted June 29, 2004 Share Posted June 29, 2004 Nah - thanks but I'll leave that to the next owner I haven't got £4000+ to spend on the single route - and an extra 50% on insurance (IF you can get the insurance!) I suspect that that is the case with most people - attractive as it might be (and I think it's very attractive!) There will be a core who will def go this way - and I wish them very well and all good luck with it In the meantime - refurb your stock ones! Link to comment Share on other sites More sharing options...
Guest Terry S Posted June 29, 2004 Share Posted June 29, 2004 You guys do make me giggle. The new budget singles should be approx. £3k if you use 550's and a SAFC, Walbro pump. Not £4k as stated. Yes it is dearer than the hybrids, but you get an awful lot more for your dough. The 550's and SAFC and pump should be added to the hybrids too so don't listen to misleading sales pitch! The single will make more power, and should give FULL boost around 3500 which is earlier than hybrids. You get rid of the troublesome sequential system, and get a modern turbo and external wastegate (read no horrendous boost spiking) in the bargain. You could go the BL tubular route which offer the best VFM and quality but this is slightly dearer. This has already been been demonstrated to good effect on Dudes car I think;) Link to comment Share on other sites More sharing options...
Guest Terry S Posted June 29, 2004 Share Posted June 29, 2004 where did mine & Paul's reply's go? Link to comment Share on other sites More sharing options...
Dragonball Posted June 29, 2004 Share Posted June 29, 2004 No sales pitch intended Terry Yours are excellent kits and I will recommend them to whom-so-ever wants to go down that route The budget kit – especially with that spec of wastegate will be fantastic if you can get near £2K The cost were based on a Jap spec to upgrade estimate Budget Single £2150? AFC £250 Pump £100 Injectors £350? Fitting £850 Tuning £150 £3850 Hybrids £1250 AFC £250 Pump £100 Injectors £350? Fitting £850 Tuning £150 £3000 Stock Refurb £650 Pump £100 Fitting £500 £1250 Link to comment Share on other sites More sharing options...
Dragonball Posted June 29, 2004 Share Posted June 29, 2004 Originally posted by Terry S where did mine & Paul's reply's go? I thought I was going mad - you to? Link to comment Share on other sites More sharing options...
Guest Terry S Posted June 29, 2004 Share Posted June 29, 2004 Originally posted by Paul E I thought I was going mad - you to? Weird. Anyway I cant be arsed to retype it all, but basically at our prices what you have listed comes to approx. £3300 for the budget single kit. Let's just hope the dollar stays so weak Link to comment Share on other sites More sharing options...
Ian C Posted June 29, 2004 Share Posted June 29, 2004 I think you missed an intercooler from that price list. At least a new SMIC I don't think anyone moderated your posts away and I can't see why that would have happened, want me to check? -Ian Link to comment Share on other sites More sharing options...
Guest Terry S Posted June 29, 2004 Share Posted June 29, 2004 No it's OK mate. FMIC is pretty optional. The SMIC is ok in good condition IMHO. Always important to do charge temp tests anyway. Link to comment Share on other sites More sharing options...
AJI Posted June 29, 2004 Author Share Posted June 29, 2004 Thanks for the replies on this, I can see the prices and it looks like I'm gonna have to start saving if I want more big bhp gains. -------Just one thing that hasn't really been answered is how responsive are the single turbos say if you were to go through a chicane where you need a short burst of power ? ------ I'm really not into the straight line stuff, so top speed doesn't realy interest me... its just a figure at the end of the day. I'm inteested in low-mid range and also high end torque for acceleration and how easy is it to apply through a single turbo. I know that Toyota went the sequential route to aid in the response and smooth delivery of power, but with a single don't get get a big kick when it comes in? This could be tricky when it would come online in the middle of a corner. Is this the case? Link to comment Share on other sites More sharing options...
Guest Terry S Posted June 29, 2004 Share Posted June 29, 2004 The power delivery of a small single is great and much more kinear than the sequentials. Try mine when it's done Link to comment Share on other sites More sharing options...
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