T-vis gone bad, engine damaged

JDM GT Four, ST185RC and ST205.

Re: T-vis gone bad, engine damaged

Postby Gert » Wed May 13, 2020 1:25 pm

Decided to weld an old cracked manifold and see how long that one is going to last. Since new manifolds are not available anymore and old ones crack too, we are taking this route. Dunno.
Pretty expensive with gaskets, but no other option for the moment.

Image

Last year and 6.500 kms ago we welded the CT27 turbinehousing too and that one is going strong till now, so fingers crossed.

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Re: T-vis gone bad, engine damaged

Postby underscore » Wed May 13, 2020 7:07 pm

How on earth do you even get a crack there? The repair looks solid at least.
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Re: T-vis gone bad, engine damaged

Postby Gert » Thu May 28, 2020 9:00 am

Found out that my T-vis did not work, sigh. Almost impossible to investigate what is wrong. But if you remove the front wheel, with one hand, I could reach the T-vis parts.
Appeared that the connector for the T-vis vsv missed one wire: broke at the connector.
Got myself an spare connector, with wires, and struggled to connect the new connector to the wiring loom.
Anyway, I succeeded and she works now...pfwiew.

Ofcourse one day later, the alarm system quit working. It is an aftermarket system and it lived in the car for about 20 years now. So, no parts available. Since the starter interrupter was disconnected long ago, I only used the system for closing and opening the doors.
I get me some cheap remote car opener and that's it. No need for an noisy sirene.... nobody wants to steal such an money pit. :crazy:
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Re: T-vis gone bad, engine damaged

Postby Gert » Sat Oct 03, 2020 2:30 pm

Sigh, cracked manifold and warped too:

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Re: T-vis gone bad, engine damaged

Postby Gert » Mon Mar 15, 2021 9:35 pm

Six months from installation and about 2.000 kms. She is going strong and runs excellent. Me happy .
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Re: T-vis gone bad, engine damaged

Postby Gert » Fri Jul 09, 2021 8:04 am

Well, now is the seal from the CT27 gone. Not much luck with my CT27 *sigh*.
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Re: T-vis gone bad, engine damaged

Postby Gert » Mon Jul 12, 2021 11:31 am

If I sniff a little around it appears that the CT27 seal is an pretty weak part. Aaron isn't very helpfull either. Does anybody know if the stock CT26 seal kit fits this turbo?
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Re: T-vis gone bad, engine damaged

Postby Gert » Mon Jul 19, 2021 12:28 pm

Turbo is off the car. Oil is pooring into the turbine housing and about 10 mm axle play.

What an disaster is this CT27. :roll:

Worst choice ever I made for this car.
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Re: T-vis gone bad, engine damaged

Postby underscore » Mon Jul 19, 2021 4:25 pm

Sorry to hear that, you seem to have no luck at all with your car :(
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Re: T-vis gone bad, engine damaged

Postby grip-addict » Tue Jul 20, 2021 3:23 am

sorry to hear. Will ATS warranty it or at least repair the turbo at cost?
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Re: T-vis gone bad, engine damaged

Postby Gert » Wed Jul 21, 2021 8:59 am

No, I told ATS about my problem and I got an email back about the use of different oils, assuming that I use the wrong engine oil.... *sigh*.

Today I brought the turbo to the rebuilder and a quick inspection told us that the bearing is gone and with some bad luck, the shaft is history too. Later today or tomorrow I get an rapport.

About the CT27, well, first we installed this turbo to the car, but I got massive boost creep, absurd. Pushing over 1,5 bar at 4.000 rpm. Even with the wastgate diconnected! Impossible to control boost.
Contacted ATS: got an sermon that my ignition map is not good and I need to retune blablabla... *double sigh*.

So, I leave this ATS rubbish and started porting the wastegate exit(s).
But now, boost was this strong, the actuator did not hold. I could not receive useable boostlevels.
(This time I did not contact ATS)

So, installed an Forge actuator. Problem solved.

Now, two and a half year and ± 17.000 km later, the bearing and seals are gone.

Probably needles to say that I regret the fact that I ever bought this CT27.

FYI, in 2000 I did sent my eight year old CT26 to PT Turbo https://ptturbo.com/ and got it back with the T04E upgrade. That combo worked for 18 years and about 95.000 kms without any problem.
If I did not had the bad luck with the intake butterflies, this turbo was probably still on the car.
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Re: T-vis gone bad, engine damaged

Postby grip-addict » Thu Jul 22, 2021 3:25 am

Uff. Sorry. I've had my run-ins with Aaron in the past too, and it... wasn't great. Just know that you're not alone.

What are you thinking about running? I saw a ct20b for sale on the alltrac diaspora facebook group last week. Is your 27 not too far gone that you can rebuild it ?
If you want to get away from the CT series, there are some really good modern options but they definitely cost.
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Re: T-vis gone bad, engine damaged

Postby underscore » Thu Jul 22, 2021 4:12 am

I can't recall the name of the company at the moment, but there's also modern upgrades that are made to be bolt-in replacements for the CT26. I like the idea of not having to totally rework everything that connects to the turbo just to get some modern tech in there.

edit: found it. You need to change up the fluid lines and the intake coupler size https://www.nixspeedracing.com/shop-mki ... t-on-turbo
★ 1991 GTFour RC ~ "Rebel Scum" ★
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Re: T-vis gone bad, engine damaged

Postby abeans » Thu Jul 22, 2021 7:39 pm

Thats too bad. I bought the ct27 as well because of the great reviews from the MR2 guys
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Re: T-vis gone bad, engine damaged

Postby grip-addict » Fri Jul 23, 2021 4:28 pm

I had a gt2860r on my red alltrac and I have a gtx2860 on my white one.
Needless to say... I think the turbo line is really great for street/autox cars.
IMO it's excellent that nixspeed put the garret supercore onto a ct26 turbine housing since you get the best of both worlds - reuse downpipes intercooler setup etc but get the more-modern facets that come along with the newer turbos.

Plus, they spool very quickly and have a bit more performance headroom than the ct series.
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