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Location:
NSW
Registered:
October 2003
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 CT20 to CT26 with GT4 intercooler
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Sun, 26 October 2003 02:35
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I am looking at upgrading my turbo on my 3TGTE. Currently it is the standard CT20 turbo, I am looking at putting a CT26 turbo with an adapter plate using existing manifolds and putting a top mount water to air intercooler off a GT4.
Just a few questions about this:
Will the CT26 turbo spool up alot quicker and give alot better power than the CT20?
What sort of boost can these turbos be set at using a GT4 intercooler?
Has anyone done this upgrade before, was it worthwhile?
Is there any other turboes, around the CT26 price range that will do a better job?
Will this intercooler be appropriate and will it do the job?
Any ideas etc about this would be appreciated.
Thanks in Advance.
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Location:
Canberra
Registered:
May 2002
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Re: CT20 to CT26 with GT4 intercooler
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Sun, 26 October 2003 09:12
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This topic has been covered several times before, you'll find plenty if you use the search function.
To give you a head start though, which version of the CT26 are you planning to use? Single entry or twin entry, ceramic or steel?
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Location:
NSW
Registered:
October 2003
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Re: CT20 to CT26 with GT4 intercooler
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Mon, 27 October 2003 01:25
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That is probably a question which I should have asked. Which version adapts to the 3TGTE and is most efficient (ie. produces quick spool up and has good power, which is easiest to install, which will give me best overall result)
thanks again
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Location:
Brisbane
Registered:
May 2002
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Re: CT20 to CT26 with GT4 intercooler
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Mon, 27 October 2003 03:34
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You want a CT26 from a 3S-GTE. The CT26 on a 7M-GTE has a much larger exhaust housing which means lag city for your 3T.
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Location:
Canberra
Registered:
May 2002
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Re: CT20 to CT26 with GT4 intercooler
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Mon, 27 October 2003 08:43
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Do you mean a twin entry 3SGTE CT26 Norbie? It will only be beneficial if you construct a manifold with paired runners for the twin entry design, otherwise you will gain nothing.. I've done both & paid the price. However, if its an early single entry 3SGTE turbo, then you'll do fine 
With the 7MGTE (single entry) CT26 on my standard 3TGTE manifold, boost response was about 400rpm later than the CT20, but didnt run out of puff at the top of the revs.
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Location:
Brisbane
Registered:
May 2002
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Re: CT20 to CT26 with GT4 intercooler
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Mon, 27 October 2003 13:08
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Single-entry or no, the MR2 CT26 is still much smaller than the 7M CT26, so it would have to be more responsive. But yeah, the single-entry one is going to be the best option if you're not prepared to build a funky manifold.
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Location:
NSW
Registered:
October 2003
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Re: CT20 to CT26 with GT4 intercooler
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Wed, 29 October 2003 07:30
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thanks
Can anyone answer the questions directly posted in the first post. Thanks again
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Location:
Brisbane
Registered:
May 2002
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Re: CT20 to CT26 with GT4 intercooler
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Wed, 29 October 2003 10:17
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1. No, yes.
2. How long is a piece of string? It depends on a lot of factors, but at a guess I'd say it would be good for about 1 bar.
3. Yes.
4. Yes; just about any turbo off a late-model 2 litre engine will work just as well.
5. Yes, although if you're planning to run lots of boost a big FMIC would be a wise investment.
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Location:
in a box
Registered:
March 2003
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Re: CT20 to CT26 with GT4 intercooler
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Wed, 29 October 2003 12:10
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well speaking from experence ive just done this covertion
ct26 single entry onto my 3TGTE with a GTiR front mount and all the rest.
hardest prob is oil lines meaning OIL DRAIN!
IMPORTANT NOTE!
U MUST HAVE THE TURBO ROTATED!!!!!!!!!!!!!!!
do the ct26 spools like a mother fuker, flutters like a VLT and go's like a house on fire 
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Location:
in a box
Registered:
March 2003
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Re: CT20 to CT26 with GT4 intercooler
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Wed, 29 October 2003 12:11
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Location:
NSW
Registered:
October 2003
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Re: CT20 to CT26 with GT4 intercooler
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Wed, 29 October 2003 12:33
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Thanks for your help guys.
bootheman, was your CT26 of a 3SGTE?
If you can, can you post pics of your engine bay, would love to see it, and did you upgrade manifold or just get an adapter plate made up. Where abouts was the work done, by yourself or someone else.
Thanks
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Location:
in a box
Registered:
March 2003
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Re: CT20 to CT26 with GT4 intercooler
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Wed, 29 October 2003 22:48
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i used the orginal manifold and got the bolt wholes die cutted out, only needs to b like 5mm to fit.
single entry from a 7mgte all new
intercooler is a MUST! esspeacily when comen up 2 the weather we are about 2 get. and id say even a cheap stand alone system would b good. and also upgrade your injectors.
and if u have the earlier 3tgte id invest $20 and get yourself a oil cooler aswell, cos these turbos stink up the engine bay like no 2morrow.
they are water cooled and oil so u gota run both and the 7mtgte and the mr2 turbo both need 2 b roated. meaning the oil drain how it is isnt facing downwards, so they roated the outside so it dose cost u about $60.
oil lines are a bitch. oil drain took me 3weeks and alot of trialing but thats cos its about 1mm above the engine mount 
im running,
400cc injectors
GTiR intercooler
Haltech f10
2 1/2 exhaust
3" dumpy
mines in my AE86
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Location:
in a box
Registered:
March 2003
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Re: CT20 to CT26 with GT4 intercooler
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Wed, 29 October 2003 22:51
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oww yer i did it and ive had no prior exp with a turbo car
so its not that hard at all BIG jigsaw puzzel
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Location:
NSW
Registered:
October 2003
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Re: CT20 to CT26 with GT4 intercooler
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Thu, 30 October 2003 12:11
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I have a haltech EMS and also 400cc injectors and upgraded fuel pumps, so looks like all I have to do is get the turbo and intercooler on there.
How does it run with the new turbo, how many RWKW and what 1/4 mile does it run? If you can, can you take engine bay picks, thanks a heap!
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Toymods member
I supported Toymods
Location:
Rydalmere, NSW
Registered:
May 2002
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Re: CT20 to CT26 with GT4 intercooler
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Thu, 30 October 2003 13:32
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CT26
My RAV4 is begging for it....
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Location:
in a box
Registered:
March 2003
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Re: CT20 to CT26 with GT4 intercooler
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Fri, 31 October 2003 01:09
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no idea im still waiting on a manifold gasket 2 seal her up properly but, u are prity much running eveything the same as me
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Location:
NSW
Registered:
October 2003
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Re: CT20 to CT26 with GT4 intercooler
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Fri, 31 October 2003 11:47
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can you get any pics of the engine bay bootheman? just curious on how you did the intercooler piping for a front mount etc.
Thanks
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