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Location:
Rocklea qld
Registered:
February 2003
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ct20 turbo questions
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Thu, 11 March 2004 10:10
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Would a ct20 turbo be a suitable turbo use on a 18rgeu. Im not gonna be running huge boost only around 5-6psi so just wanna know specs and if the turbo will suit my engine.
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Location:
Brisbane
Registered:
May 2002
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Re: ct20 turbo questions
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Thu, 11 March 2004 23:44
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The CT20 isn't good for anything really. It's small and old and crap. Even on 3T-GTE's they perform poorly.
Get yourself a CT26 or a s5 RX7 turbo, they're cheap and plentiful and will work much better.
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Location:
Canberra
Registered:
June 2003
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Re: ct20 turbo questions
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Fri, 12 March 2004 02:23
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2 mates both ran CT26's on their 18RG's. One a Supra CT26 and the other a GT4 twin entry CT26. Both cars went very hard for the limited mods they had. The twin entry with a split pulse manifold boosted up about 500rpm sooner than the Supra CT26. They both had high compression so only ran 10-12psi max
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Fri, 12 March 2004 10:12
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So stay away from the ct20 then. Also does anyone know the best place to get my manifold made or since Im only running 5psi anyway will a home one do the job. As i dont wanna pay for a good one and then change turbos down the line and have to change manifolds.
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Location:
Brisbane
Registered:
May 2002
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Re: ct20 turbo questions
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Sat, 13 March 2004 03:16
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Exotic Exhausts apparently do a pretty decent job for not too much $$$. If you want to bodge together a home-grown manifold that should work fine as well. My turbo manifold was constructed from a cut-and-shut set of extractors, it looks pretty dodgy but it works and it's cheap!
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Sat, 13 March 2004 06:14
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I was considering using a old set of extractors. Should i deffinatly stay away from the ct20 then. What about the ct26
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Location:
Perth
Registered:
January 2004
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Re: ct20 turbo questions
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Sat, 13 March 2004 08:18
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Depends on the application really. To call them crap on everything is pretty harsh.
I personally know of a 1J Soarer with two CT20's bolted on in place of the CT12a's here in Perth which boots hard. 450 - 500 HP in theory, and it certainly feels like it's up there.
I spose the dyno will tell.
I for one wouldn't mind two of them for my 1J.
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Sat, 13 March 2004 09:12
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theres a slight difference between to ct20's on a engine to one on a small 4 cylinder. Only really considered the ct20 as i can get one dirt cheap that is supposivly in good condition.
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Sun, 21 March 2004 01:54
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Was ready a page about a 2ltr turbo kit and it says that the ct20 is the one recommended if your are putting a turbo on a 2ltr. Is this correct.
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Location:
Mackay QLD
Registered:
November 2002
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Re: ct20 turbo questions
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Sun, 21 March 2004 07:51
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The ct20 turbo is an agricultural historic paper weight. Please I would hate to see another human being waste any more time or money on these things.You may find the 1jz was running ct20b turbos which are a completely different kettle of fish.Get youself a T28 they are cheap and have good bang for your bucks.
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Location:
Wellington, NZ
Registered:
March 2004
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Re: ct20 turbo questions
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Sun, 21 March 2004 23:02
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| people100 wrote on Sat, 13 March 2004 22:12 |
theres a slight difference between to ct20's on a engine to one on a small 4 cylinder. Only really considered the ct20 as i can get one dirt cheap that is supposivly in good condition.
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You sure it wasn't talking about the CT20b?? The CT20 is of a Deisel Hilux is it not?? the CT20b is of the Gen III MR2's so most defintly good for a 2.0 ltr engine. I would have thought they ment CT20b if there comparing it to the CT26 as there both off the MR2.
Cheers
KiwiMR2
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Mon, 22 March 2004 09:45
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Im not sure if its a ct20b. How do i tell. If it is then should i grab it??? Also 7mge injecters for $100 is that a good price??
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Location:
Wellington, NZ
Registered:
March 2004
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Re: ct20 turbo questions
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Mon, 22 March 2004 09:49
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I know what a CT20B looks like but Im buggered if I can remember what a CT20 looks like. IF it's a ct20b and it's in ok condition then most definitly get it...they go for arounf $800-$900 Aussie dollars from what I know....they might not know what they have 
Cheers
KiwiMR2
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Location:
Brisbane
Registered:
May 2002
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Re: ct20 turbo questions
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Mon, 22 March 2004 11:06
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If it's a CT20B it will probably be cast into the compressor housing. I have CT20A's on my 2JZ and it's cast on them.
Note that CT20, CT20A and CT20B are three completely different turbos, despite the similar designations.
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Tue, 23 March 2004 10:09
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so if its a ct20b grab it then
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Location:
NSW
Registered:
October 2003
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Re: ct20 turbo questions
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Tue, 23 March 2004 10:28
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| KiwiMR2 wrote on Mon, 22 March 2004 20:49 |
I know what a CT20B looks like but Im buggered if I can remember what a CT20 looks like. IF it's a ct20b and it's in ok condition then most definitly get it...they go for arounf $800-$900 Aussie dollars from what I know....they might not know what they have
Cheers
KiwiMR2
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I got told they go for around 300-400
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Location:
NSW
Registered:
October 2003
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Re: ct20 turbo questions
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Tue, 23 March 2004 10:30
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| people100 wrote on Tue, 23 March 2004 21:09 |
so if its a ct20b grab it then
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If it is a CT20B grab it and I will buy it off you, I have been chasing one for a while now...
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Tue, 23 March 2004 11:20
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If i do get it i will be keeping it as i need it for my turbo conversion.
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Location:
Mackay QLD
Registered:
November 2002
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Re: ct20 turbo questions
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Fri, 26 March 2004 10:40
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Ct20 is off the 3tgte it has ct20 on it.If its a ct20 off a diesel kick it.Vg30 t28 from SSS in sydney go for $250 with3mths warranty. ct26 go for $500 with the same.If it has ct20 written on stear clear.They will cost money.
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Location:
Sunshine Coast
Registered:
July 2003
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Re: ct20 turbo questions
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Sat, 27 March 2004 06:56
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| pulcino wrote on Sun, 21 March 2004 18:51 |
The ct20 turbo is an agricultural historic paper weight.
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So it's no good for an engine that is ten years older than the one the turbo came off then?  Seriously the guy wants to build a cheap turbo kit and run it at 6 psi so a CT20 would be fine for the job. Would someone like to elaborate on the evils of CT20's?
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Location:
Mackay QLD
Registered:
November 2002
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Re: ct20 turbo questions
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Sat, 27 March 2004 08:02
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My ct20 ran out of puff on a 1.6 by 5000rpm after kickin in at 3000 rpm and even after costing me $650 to get reconditioned it never stopped dropping oil in the exhaust. It then blew up.
Costing me over $1000 in total it was nothing but a pain then I had the extra pain of having to modify my exhaust manifold to get another turbo to fit.If you go t28 the bolt pattern fits alott of real performer turbos and it wont brake the bank.
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Location:
Sunshine Coast
Registered:
July 2003
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Re: ct20 turbo questions
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Sat, 27 March 2004 08:46
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One turbo failing isn't indicative of every other produced. What does running out of puff entail. The turbo is the last place I'd look if the engine didn't want to rev out to redline.
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Location:
Mackay QLD
Registered:
November 2002
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Re: ct20 turbo questions
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Sat, 27 March 2004 09:20
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I am only one of several people you will find on these forums that have encountered bad times with these.If you just want to be argumentitive I shouldnt bother. My car at 5000rpm would drop all power due to the restrictive nature of this turbo.
Buy what you want spend all your money for all I care.
I just know if I had have been told right from the begining I wouldnt have used it.
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Location:
Sunshine Coast
Registered:
July 2003
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Re: ct20 turbo questions
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Sun, 28 March 2004 04:48
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I am not trying to be argumentative but you can't make blanket statements about things and expect no rebuttal. I had a CT20 on my 3TGTE and it would rev as far as the management would allow it. The turbo you had must have been damaged to restrict the airflow as you say. I am trying to answer the guys question regarding fitting a turbo to an 18RG on a budget not jump on the "those turbos are shit, you need a GT25 or it won't run" bandwagon. If the CT20 is in serviceable order it will work on an 18RG, it won't make huge power but nothing will at 6 psi on a budget.
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Location:
Mackay QLD
Registered:
November 2002
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Re: ct20 turbo questions
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Sun, 28 March 2004 08:42
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Sorry mate you are obviosly right.
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Sun, 28 March 2004 08:51
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what if its a ct20 off a diesel. would it still be alright for my application. What sort of boost and power could a diesel ct20 handle on a 18rgeu engine???
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Location:
Brisbane
Registered:
May 2002
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Re: ct20 turbo questions
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Sun, 28 March 2004 11:23
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A diesel turbo will work fine on a diesel engine. Do you have a diesel engine? No.
Seriously, stop fucking around and get a real turbo or just don't bother. I can see you going to a lot of effort to get it all installed and being bitterly disappointed with the results. Do it right the first time!
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Location:
Rocklea qld
Registered:
February 2003
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Re: ct20 turbo questions
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Sun, 28 March 2004 11:49
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i was gonna forget it but then people keep coming back and saying "yeah it will be fine to use" Its hard to keep track of who to believe now.
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Location:
NSW
Registered:
October 2003
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Re: ct20 turbo questions
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Sun, 28 March 2004 12:53
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A ct20 will not be fine to use, it will give you more power than your motor would naturally aspirated but if you are going to the effort of making a custom manifold etc., you may aswell put a better turbo on, trust me I have a ct20 on my car - thats why I am upgrading very soon.
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Location:
Canberra
Registered:
June 2003
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Re: ct20 turbo questions
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Mon, 29 March 2004 03:20
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A CT20 will not be fine...it will be shit. Have a look at them. The comp wheel is tiny and a totally antiquated design. It has crap efficiency (heats the air badly) and for it's size has more lag than any turbo i've seen. The wastegate port is tiny so high exhaust backpressure is guaranteed. On a 3TGTE they were only just adequate and even there i reckon they were crap. On a 2 litre with that great yamaha 18RG head a CT20 will not give anywhere near the result of all the other options you have been presented with.
The CT20B is a twin entry turbine but doesn't have any model designation on it. Dead easy to pick. The only other twin entry turbine turbo Toyo do is the CT26 and that has CT26 stamped on the comp housing.
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