CT26 compressor wheel upgrade worthwhile?

Q&A regarding engines, turbos, and intercoolers and power upgrades

Re: CT26 compressor wheel upgrade worthwhile?

Postby 1337computing » Wed Nov 06, 2013 4:11 pm

celica_gtx wrote:I went thro these guys. Paid 200 for it all plus a ceramic coating. And I'm happy w it


http://turbocharged.com/main.htm
larger t04e compressor wheel of your choice (we recommend t04e 50 trim)Upgrades also include machining the compressor housing and bearing housing to accept the larger compressor wheel.We install larger 360 thrust bearing and stagger gap turbine side seal." said by tje shop


Pics r in my build. Havent turn the boost up on it yet tho
viewtopic.php?f=44&t=45039


Any updates on this yet? Got her up and running?
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Re: CT26 compressor wheel upgrade worthwhile?

Postby celica_gtx » Thu Nov 07, 2013 10:21 pm

Yea she's running and driving daily. Just never finished the thread.
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Re: CT26 compressor wheel upgrade worthwhile?

Postby 1337computing » Fri Nov 08, 2013 12:54 pm

celica_gtx wrote:Yea she's running and driving daily. Just never finished the thread.


Was wondering more of what kind of #'s your pushing. If there decent I would def pay 200 bucks.
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Re: CT26 compressor wheel upgrade worthwhile?

Postby Chuck.hudson » Fri Nov 08, 2013 3:52 pm

I just talked to a guy from that gpopshop and he says they can do a 50 trim upgrade for the ct26 that can handle atleast 300 all wheel horsepower its 630 for the rebuild and wheel upgrade. Its no 200 bucks out the door but 630 isnt too bad i think i might give it a try at the begining of next year when i got the money and if i can get my car up and reliably running by then
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Re: CT26 compressor wheel upgrade worthwhile?

Postby jwgt41 » Fri Nov 08, 2013 5:31 pm

The CT26 is a viable option up to about 325hp. There's an inherent design flaw in that the turbo is inverted, forcing the oil to flow upwards, opposite of gravity. That's the prime reason for it's limitations.

Having said that, I upgraded one of mine at Turbonetics in CA, way back when they did "hybrid" upgrades. They don't do them anymore. They installed a Garrett T-04 H3 compressor wheel, 360 degree bearing and machined the compressor housing for about $300. There was increased boost pressure with drastically less turbo lag. Response time was cut in half, making the car a blast to drive! The CEL ended the fun when it sensed the overboost situation and sent the car into "limp home" mode. Simple fix with the resistor in the ECU. Overall, it was an economy upgrade with very pleasant results! But again, the design of the turbo limits maximum performance.

I have a picture around here somewhere if I can find it.

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Re: CT26 compressor wheel upgrade worthwhile?

Postby celica_gtx » Fri Nov 08, 2013 7:07 pm

Chuck.hudson wrote:I just talked to a guy from that gpopshop and he says they can do a 50 trim upgrade for the ct26 that can handle atleast 300 all wheel horsepower its 630 for the rebuild and wheel upgrade. Its no 200 bucks out the door but 630 isnt too bad i think i might give it a try at the begining of next year when i got the money and if i can get my car up and reliably running by then



Yea like I said I had throwen in stuff w the deal I think that what I originally got quoted aswell showing up to the door step w cash in hand is good too. I cranked it up to 14 the other day n its a blast. But u can tell it'll be more fun w supporting mods n a tune.
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Re: CT26 compressor wheel upgrade worthwhile?

Postby Chuck.hudson » Fri Nov 08, 2013 7:12 pm

Well cool man I've tried calling that shop multiple times and couldn't get through I guess I'll have to man up and leave a vm did they give you any specs on the turbo build like what's a reliable hp output or the safest max boost or anything like that
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Re: CT26 compressor wheel upgrade worthwhile?

Postby celica_gtx » Sat Nov 09, 2013 12:03 am

Chuck.hudson wrote:Well cool man I've tried calling that shop multiple times and couldn't get through I guess I'll have to man up and leave a vm did they give you any specs on the turbo build like what's a reliable hp output or the safest max boost or anything like that


There is a compresssor map on their page but other than that I'm not to sureim sure it can relate to ats ct27. But I can me wrong..
transformation has BEGUN!!!
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Re: CT26 compressor wheel upgrade worthwhile?

Postby jwgt41 » Sat Nov 09, 2013 1:40 am

The difference in compressor wheels

Image
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Re: CT26 compressor wheel upgrade worthwhile?

Postby knowitalls » Sat Nov 09, 2013 5:21 am

If you do the upgrade, there is no reason to go with a compressor wheel larger than a TO4E-46 trim compressor wheel. Also, perform a 15 degree clip on the turbine wheel. The clip will allow you to run higher boost without it falling off until ~6000rpm which has been dyno proven to add ~ 15hp.
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