Ric Posted August 2, 2014 Share Posted August 2, 2014 Hi Guys, I have some smokey turbos. I either want to pay to rebuild or perhaps do them myself, I'm not too bad with some spanners i've done my own stem seals etc before. I came across this on ebay: http://www.ebay.co.uk/itm/TURBO-BALANCED-CHRA-CARTRIDGE-TOYOTA-SUPRA-TWIN-TURBO-CT12-/281388062156?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item41840915cc The main problem with referbing your own turbos i think is down to balancing, but these CHRA units are complete, balanced. What is stopping me just opening my stock turbos and replacing the centre piece? Is it that simple, or am i missing something? Quote Link to comment Share on other sites More sharing options...
Ric Posted August 4, 2014 Author Share Posted August 4, 2014 nobody? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 4, 2014 Share Posted August 4, 2014 (edited) Cracked turbine housings are the bug bear of these turbos, usually around the port of the wastegate on the front turbos. If yours are not cracked, or not badly cracked these might make for cheap rebuilt turbos. Only way to find out is to buy and try It should be that simple... But I'll tel you something for nothing. If it / they fail, you won't get a refund, in all the years I have bought exchange turbos, if they fail it's *NEVER* their fault. Always "wrong oil, bad fitment, blocked oil feeds, low oil pressure, abuse, dirt in the system, bad air filtration, overheating, stuck wastegate", blah blah. The sales people must have a sheet to read off until they learn the excuses parrot fashion This is why I will only fit *NEW* turbos unless the customer accepts a failed recon unit is *NOT* down to me, labour and parts wise, to remove and replace. See their disclaimer, seems very broad and ready to spring into action. In fairness all turbo rebuilders seem to take this attitude. Maybe because they are critical devices and they *DO* get their share of numpties fitting them wrongly or abusing them... Lots of labour that I only want to do the once, unless paid to do it multiple times, it's not like fitting an alternator... But I would be very interested how you get on if you buy these. Edited August 4, 2014 by Chris Wilson (see edit history) Quote Link to comment Share on other sites More sharing options...
Ric Posted August 4, 2014 Author Share Posted August 4, 2014 I know the disclaimers are adequate, but even if i only got 10,000 miles (that could be 5 years for the amount i drive mine) it's not a bad investment at 250-300quid? over 1000 getting them done professionally. Ill have to get the turbo's off first and see if theres any cracking first then decide what to try. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 4, 2014 Share Posted August 4, 2014 It's rare to find any housings without cracks these days. The situation is not as bad as for the Mazda FD rotary engines, where the huge heat makes them crack horrendously and even burn away, but short of buying new ones it's going to be hard to find used front turbos with no cracks. Quote Link to comment Share on other sites More sharing options...
Shane Posted August 4, 2014 Share Posted August 4, 2014 Will be very interesting to see how you get on if you go down this route. I too have looked at these several times and wondered what's involved. I just had the MOT on mine done today and I covered less than 1500 miles since the last so 10,000 suits me fine. Good luck if you do go ahead Ric and please let us know how you get on. Quote Link to comment Share on other sites More sharing options...
Ric Posted August 6, 2014 Author Share Posted August 6, 2014 I've been researching this the last few days and watched many videos on CHRA replacement and im starting to worry that it looks incredibly simple to do, perhaps too easy, a few simple bolts once the turbos are off. I think I'm 100% going to try this myself. Can anybody confirm the jspec 94 TT is a CT12 turbo, conflicting reports on here regarding CT12 or CT20 and various A B C models. Im not around my car to see, but i expect identification will only be 100% when my turbos are off. Quote Link to comment Share on other sites More sharing options...
Wez Posted August 6, 2014 Share Posted August 6, 2014 (edited) EDIT to correct wrong information, JZA80 uses CT20 turbos Edited August 6, 2014 by Wez (see edit history) Quote Link to comment Share on other sites More sharing options...
Ric Posted August 6, 2014 Author Share Posted August 6, 2014 CT20 seems to be UK model on some threads and CT12 is jspec and on others threads it's reversed. Quote Link to comment Share on other sites More sharing options...
Nic Posted August 6, 2014 Share Posted August 6, 2014 http://www.turbosupras.com/pages/en/pages/technical/CT20%20turbochargers.htm Quote Link to comment Share on other sites More sharing options...
Wez Posted August 6, 2014 Share Posted August 6, 2014 http://www.turbosupras.com/pages/en/pages/technical/CT20%20turbochargers.htm Nice find and my bad, looks like I got them the wrong way round Quote Link to comment Share on other sites More sharing options...
Ric Posted August 6, 2014 Author Share Posted August 6, 2014 So it is a CT20... based on those part numbers the following should be fine - http://www.ebay.co.uk/itm/Turbo-Turbocharger-CHRA-Core-Cartridge-17201-54010-1720154010-17201-54010-CT20-/321046791772?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4abfe1465c They can be had for less than £100 on ebay, however this seller seems to be a better supplier. Quote Link to comment Share on other sites More sharing options...
Nic Posted August 6, 2014 Share Posted August 6, 2014 This also may be of help.ToyotaTurbos.pdf Quote Link to comment Share on other sites More sharing options...
Guest CombatSanta Posted August 7, 2014 Share Posted August 7, 2014 Please let us know if you decide to do this. I think it would be wonderful to have like a guide with pictures and stuff.. Quote Link to comment Share on other sites More sharing options...
Ric Posted August 8, 2014 Author Share Posted August 8, 2014 http://www.turbosupras.com/pages/en/pages/technical/CT20%20turbochargers.htm This also may be of help. Had time to have a proper read of these, even these 2 documents contradict each other. Beginning to look a bit of a minefield to get the right CHRA first time. Quote Link to comment Share on other sites More sharing options...
Iky Posted August 8, 2014 Share Posted August 8, 2014 I looked into doing a similar thing some time ago. I suppose it would depend on how bad your old turbos are. Once the shaft has play, the blades scrape on the housings and wear them away especially the front alloy compressor housing. So even when you replace the chra with a brand new item, there is that extra gap between the housings and blades which will reduce the turbo efficiency. By what degree I don't know. Quote Link to comment Share on other sites More sharing options...
Jos Posted August 20, 2014 Share Posted August 20, 2014 Did you have any luck with these? Quote Link to comment Share on other sites More sharing options...
Ric Posted August 20, 2014 Author Share Posted August 20, 2014 I work out of the country so i wont be starting this for a few weeks. However. From my discussions from companies who supply the CHRA's it seems there are VAST differences between models, it would be nearly impossible to get the right CHRA first time, or the 2nd, perhaps the third, even with the CHRA identification numbers. Could be a nonstarter. Quote Link to comment Share on other sites More sharing options...
Jos Posted August 20, 2014 Share Posted August 20, 2014 (edited) That's a pity, but thank you for sharing your efforts, may have to search for another option then. Edit, don't know if it's an option to send a Toyota cartridge to them? I have multiple failed cartridges, so could spare one:D Edited August 20, 2014 by Jos (see edit history) Quote Link to comment Share on other sites More sharing options...
robby a Posted November 12, 2015 Share Posted November 12, 2015 Any update on this. I was thinking of doing the same and replace the cartridges Quote Link to comment Share on other sites More sharing options...
Timlowthian Posted November 12, 2015 Share Posted November 12, 2015 I would be also be very interested if anyone had found the correct ones. I have a dead set of UK spec turbos in my shed. Quote Link to comment Share on other sites More sharing options...
robby a Posted November 13, 2015 Share Posted November 13, 2015 I've done a lot of research on this over the last few days and I have come to conclusion that j-spec run ct20 and uk spec run ct12b. If your turbos are ct12b it will be stamped on the compressor housing and if they are ct20 there will be no such stamp. Hope this clears it up. [emoji51] Quote Link to comment Share on other sites More sharing options...
ashloys Posted November 13, 2015 Share Posted November 13, 2015 I would also like to know this Ric! Quote Link to comment Share on other sites More sharing options...
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