gurnam Posted February 10, 2010 Share Posted February 10, 2010 Hi guys, After speaking to Turbo Dynamics, I've realised that replacing the stock ceramic turbos for UK ones is not as straight forward as I thought as the manifold and stud pattern is slightly different. So I asked them for a quote to fully rebuild my current CT20A's and replace the ceramic part for steel. They quoted me £1000 with me having to send my current tubbys off to them which I think is a good price. Has anyone done this before? I'm looking for close to 500bhp. Quote Link to comment Share on other sites More sharing options...
AlexM Posted February 10, 2010 Share Posted February 10, 2010 I think the best you'll get with hybrids is mid 400s, unless you go on a generous dyno. Why not replace your stock turbos with a second hand set (if they're damaged) and put the remaining money into a single fund? Quote Link to comment Share on other sites More sharing options...
gurnam Posted February 10, 2010 Author Share Posted February 10, 2010 I don't want a single turbo sorry as that means changing other things like injectors, getting the car mapped etc due to totally different power delivery depending on spec of turbo used. All sounds too expensive. Will mean I lose the nice low end pull too. With my way, I still get the low end drivability (as it'll never ever see a track) and more power without the risk of blowing up my turbos if I increase the boost a little more and can use the standard ECU map if I stay around the 1.1bar mark until I have more funds for a proper ECU and a mapping session. Quote Link to comment Share on other sites More sharing options...
bradleyh_15 Posted February 10, 2010 Share Posted February 10, 2010 might be worth getting hold of paul whiffin at whifbitz think he does them! I would trust him more than turbo dynamics! Quote Link to comment Share on other sites More sharing options...
gurnam Posted February 10, 2010 Author Share Posted February 10, 2010 might be worth getting hold of paul whiffin at whifbitz think he does them! I would trust him more than turbo dynamics! Tried him already but no reply when I called him. Will try again later. Quote Link to comment Share on other sites More sharing options...
Steve Posted February 10, 2010 Share Posted February 10, 2010 Why not send a PM, he is online now. Quote Link to comment Share on other sites More sharing options...
tDR Posted February 10, 2010 Share Posted February 10, 2010 See discussions on hybrids as the longevity questionability still applies. Essentially this is 'hybridising' the stock JDM turbos as you're putting wheels of different material into the housings. Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
Matt H Posted February 10, 2010 Share Posted February 10, 2010 You're not going to get 500bhp without changing to a single or bigger twins etc. You'll also struggle to get 450bhp without good supporting mods from hybrids. Quote Link to comment Share on other sites More sharing options...
Nic Posted February 10, 2010 Share Posted February 10, 2010 I don't want a single turbo sorry as that means changing other things like injectors, getting the car mapped etc due to totally different power delivery depending on spec of turbo used. All sounds too expensive. Will mean I lose the nice low end pull too. With my way, I still get the low end drivability (as it'll never ever see a track) and more power without the risk of blowing up my turbos if I increase the boost a little more and can use the standard ECU map if I stay around the 1.1bar mark until I have more funds for a proper ECU and a mapping session. They are referred to as 'hybrid' turbos many members have them fitted. Max you will get from them is around 440-450hp flywheel at 1.4bar and you will be pushing the stock 440cc injectors beyond their limit at that sort of power. Personally for the small hike in power at the cost of response I wouldn't bother. Oh and with the right single turbo you don't lose 'low end drivability', my GT35R would make positive boost at around 2Krpm, only a couple hundred rpm more than the stock sequential turbos. Quote Link to comment Share on other sites More sharing options...
Thorin Posted February 10, 2010 Share Posted February 10, 2010 I don't want a single turbo sorry as that means changing other things like injectors, getting the car mapped etc To get 500bhp out of hybrids you'd still need bigger injectors, cams, ECU, mapping. Quote Link to comment Share on other sites More sharing options...
gurnam Posted February 10, 2010 Author Share Posted February 10, 2010 I didn't say 500bhp exactly but as close to it as I can get from hybrids will do for me. If it means 450bhp then so be it. The car will probably be mapped once the hybrids are on. If the mapper says he can go further with bigger injectors then I'll fit them. Also the single turbo kits on Whifbitz site are around £3k upwards and that's without factoring in supporting mods such as bigger injectors, mapping, etc. Quote Link to comment Share on other sites More sharing options...
Nic Posted February 10, 2010 Share Posted February 10, 2010 (edited) You'll be limited to around 420hp on the stock 440cc injectors, if you want 450hp then you will need bigger injectors, ECU/mapping, cams. Edited February 10, 2010 by Nic (see edit history) Quote Link to comment Share on other sites More sharing options...
Scooter Posted February 10, 2010 Share Posted February 10, 2010 https://www.speedforsale.com/supraparts/speed-sale-usdm-gt28-hybrid-stock-twin-turbo-upgrade-550rwhp-p-553.html these have to give the best chance? but being from the USA you'd need (off the top of my head) a UK ECU, injectors and various downpipe/exhaust pieces plus a fuel fudger as an absolute minimum......... Quote Link to comment Share on other sites More sharing options...
johnny g Posted February 10, 2010 Share Posted February 10, 2010 You can get the JDM variations for $1700, that'd be my choice really. http://www.speedforsale.com/supraparts/speed-sale-gt28-style-hybrid-stock-twin-turbo-upgrade-p-635.html Quote Link to comment Share on other sites More sharing options...
Scooter Posted February 10, 2010 Share Posted February 10, 2010 Indeed, I hadn't seen them i just stumbled on the first link via their ad on Ebay.com Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted February 10, 2010 Share Posted February 10, 2010 Are they not CT12s? Quote Link to comment Share on other sites More sharing options...
gurnam Posted February 10, 2010 Author Share Posted February 10, 2010 I'll get bigger injectors and have it mapped but at a later date. I'll see how the standard cams perform but I don't mind changing for better ones if required at a later date. I just can't afford a single conversion but will look into the bigger hybrids. Quote Link to comment Share on other sites More sharing options...
johnny g Posted February 10, 2010 Share Posted February 10, 2010 Personally, I'd say ditch the hybrids, get some good stock ones from a member here, get a nice Side/Front Mount intercooler upgrade and mapping to control your boost. You'll get the most of your setup that way. Your stock intercooler will be shot, after about 15 years of use. You can also then pay £20 for your membership. Quote Link to comment Share on other sites More sharing options...
Suprab1 Posted February 11, 2010 Share Posted February 11, 2010 They state that you can run these at 26psi if i'm correct thats 1.7 bar. Would there be a heat problem with this size turbo at that boost? if not you should see great power at this boost. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 11, 2010 Share Posted February 11, 2010 Personally I would buy two new ones from Toyota. The problem with rebuilding turbos is they are now very old and many have cracked turbine housings. They CAN be welded but my experience shows they crack again, sooner rather than later. Between myself and two members here we have 10 + turbos, both UK and Jap spec, with cracked turbine housings. If you intend to keep the car consider buying a pair of new ceramics off Toyota. The cost of rebuilding yours WILL go up if they find the housings are cracked.... Quote Link to comment Share on other sites More sharing options...
Nic Posted February 11, 2010 Share Posted February 11, 2010 Personally I would buy two new ones from Toyota. The problem with rebuilding turbos is they are now very old and many have cracked turbine housings. They CAN be welded but my experience shows they crack again, sooner rather than later. Between myself and two members here we have 10 + turbos, both UK and Jap spec, with cracked turbine housings. If you intend to keep the car consider buying a pair of new ceramics off Toyota. The cost of rebuilding yours WILL go up if they find the housings are cracked.... I don't think I've seen a used turbo that hasn't had a crack in the housing. I got the impression from the OP that the only reason for the swap was to gain more power. Gurnam are your current turbos working? Quote Link to comment Share on other sites More sharing options...
hadyn Posted February 11, 2010 Share Posted February 11, 2010 Yeah, I had my eyes on the Speed For Sale hybrids when I had my Supra. They look ideal for anyone who wants reliability, street drivability at a fairly decent price. Arent brand new toyota twins like 3 grand or something stupid?!? Quote Link to comment Share on other sites More sharing options...
Dragonball Posted February 11, 2010 Share Posted February 11, 2010 You will hate the lag on the larger hybrided ones - trust me! Better go for JDM or a small single Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted February 11, 2010 Share Posted February 11, 2010 I was talking to a member at a recent meet who had CR turbos refurb his J/spec ones for £600. This replaced all the seals and ceramic parts with steel. I've phoned them and confirmed this price is correct. His turbos run perfectly BTW. It's all well and good suggesting new turbos from toyota, but you're looking at 2k to replace both of them. 2k to me doesn't sound financially sound when replacing for stock units, if you're spending that amount of money you may want to look small single instead for a bit more money. If the housings are cracked, then the best port IMO is to get some hybrids from Mr Whiffen, he can supply and fit the stage 1's for around £1500 Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 11, 2010 Share Posted February 11, 2010 Hybrids are rebuilt units based on your old cores. If they are cracked,. so will be the hybrids, probably welded up. Only option is to find cores to send for rebuilding as hybrids WITHOUT cracks, and good luck to you. I have managed to do this for an engine in build now, but it has cleared me out of good housings in the process. Quote Link to comment Share on other sites More sharing options...
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