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CT27 turbo rebuild, turbo rebuild services or rebuilt turbo?

PostPosted: Tue Sep 19, 2017 1:45 am
by EvilStig
I have a CT27 in my ST185 and it's slinging oil. I assume it's going to need a rebuild. I can buy the kit to rebuild it but am unsure if I should attempt it myself, or, if not, where I could take it to get it rebuilt? Does anyone still build CT27 turbos?

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Tue Sep 19, 2017 3:06 am
by FC Zach
These guys?
https://majesticturbo.com/

Maybe ATS Racing can, they built the "CT27".
http://www.atsracing.net/Parts/Index/CT27

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Tue Sep 19, 2017 3:50 am
by EvilStig
Thanks! didn't know about ATS, very good to know they're still around, I'll drop them a line.

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Tue Sep 19, 2017 8:22 pm
by Gt4grey
I would'nt recommend rebuilding the turbo yourself, deffo needs a specialist with the proper equipment to do a long lasting job.

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 12:06 am
by EvilStig
Ok thanks all, I got in touch with ATS and they'll do the rebuild for $425 assuming it doesn't need a turbine or housing (it shouldn't) also asking them to tag on the ceramic coating for a little extra.

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 3:16 am
by FC Zach
I just sent them an email to see if they'd modify my turbo, I like the idea of having more power and keeping things stock bolt-on. How do you like the CT27? Will I need a stand-alone ECU or will the stock support the added power?

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 3:57 am
by lalojamesliz1
FC Zach wrote:I just sent them an email to see if they'd modify my turbo, I like the idea of having more power and keeping things stock bolt-on. How do you like the CT27? Will I need a stand-alone ECU or will the stock support the added power?


I've always seen they are very similar to a ct20b power wise

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 4:29 am
by EvilStig
FC Zach wrote:I just sent them an email to see if they'd modify my turbo, I like the idea of having more power and keeping things stock bolt-on. How do you like the CT27? Will I need a stand-alone ECU or will the stock support the added power?


stock ecu is enough, but needs EBC and a fuel cutoff bypass to use the extra boost. When I bought the car, it was lacking these mods, so it would boost up to 12-15PSI and then hit fuel cutoff. It also had other issues though, vacuum leaks and a jury-rigged recirculator... I'm cutting that out and replacing it with a proper BOV and adding in the EBC and cutoff bypass before I button her back up.

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 4:35 am
by FC Zach
EvilStig wrote:
FC Zach wrote:I just sent them an email to see if they'd modify my turbo, I like the idea of having more power and keeping things stock bolt-on. How do you like the CT27? Will I need a stand-alone ECU or will the stock support the added power?


stock ecu is enough, but needs EBC and a fuel cutoff bypass to use the extra boost. When I bought the car, it was lacking these mods, so it would boost up to 12-15PSI and then hit fuel cutoff. It also had other issues though, vacuum leaks and a jury-rigged recirculator... I'm cutting that out and replacing it with a proper BOV and adding in the EBC and cutoff bypass before I button her back up.


Good to know, thanks! Oddly, I have gone to and over 12psi with my 26 and haven't hit fuel cut and to my knowledge I don't have a bypass for this. . I do have a blowoff valve and an adjustable billet wastegate actuator (12lb spring).

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 5:04 am
by underscore
Fuel cutoff is 14.7psi on 165's and 185's, excluding the RC/CS/GrpA. A BOV just makes a pretty sound but a boost controller or adjustable wastegate will help things. Personally I like my EBC because it can ut the boost back to the stock wastegate pressure if it detects a problem.

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 5:10 am
by FC Zach
underscore wrote:Fuel cutoff is 14.7psi on 165's and 185's. . .

Good to know.

underscore wrote:A BOV just makes a pretty sound

Ha Ha, yeah true and I love it!

underscore wrote:Personally I like my EBC because it can ut the boost back to the stock wastegate pressure if it detects a problem.

I like that too, I plan on installing one. Which one do you have?

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 6:07 pm
by EvilStig
underscore wrote:A BOV just makes a pretty sound


I'm installing one to help reduce stress on the engine and manifold. Too much boost when letting off on the gas is bad. And I'm having issues with a lean condition as it is.

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 8:16 pm
by underscore
FC Zach wrote:Ha Ha, yeah true and I love it!


Me too, that's why I have one haha.

FC Zach wrote:I like that too, I plan on installing one. Which one do you have?


I've got the Innovate SCG-1. It's a boost gauge, boost controller and wideband all in one. The upside of that is that it can cut boost if it detects a spike in boost pressure or that you're running too lean. It's takes a bit more work to set up than a "point and shoot" boost controller but I like the added protection.

EvilStig wrote:I'm installing one to help reduce stress on the engine and manifold. Too much boost when letting off on the gas is bad. And I'm having issues with a lean condition as it is.


Pressures slightly above the stock fuel cut shouldn't be a risk to the manifold or anything else. If you're running lean I'd fix the actual problem instead of trying to use a BOV as some kind of bandaid.

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Wed Sep 20, 2017 9:06 pm
by EvilStig
underscore wrote:Pressures slightly above the stock fuel cut shouldn't be a risk to the manifold or anything else. If you're running lean I'd fix the actual problem instead of trying to use a BOV as some kind of bandaid.


Oh of course I'm fixing the problem... but I also over-engineer everything so it can never fail again

Re: CT27 turbo rebuild, turbo rebuild services or rebuilt tu

PostPosted: Thu Sep 21, 2017 6:39 am
by FC Zach
underscore wrote:I've got the Innovate SCG-1. It's a boost gauge, boost controller and wideband all in one. The upside of that is that it can cut boost if it detects a spike in boost pressure or that you're running too lean. It's takes a bit more work to set up than a "point and shoot" boost controller but I like the added protection.


Man that is nice! I haven't seen this one, I sure am happy I have now, thanks! I've always liked the Innovate A/F products, it's a big plus that they've crammed all that in one gauge. Super convenient!