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Twin Turbo C5Z

 
Old 10-05-2014, 10:59 AM
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jimbos'ss
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Default Twin Turbo C5Z

My build in pics
This is a stock LS6 build so low boost. I'm running 8lbs from two 50 trims. Sorry about the crappy cell phone pics. The car is already up and running and I'm currently street tuning it. Still working out a ton of small issues of course. BIG thanks to JDS99 for allowing me to pick his brain and bounce my ideas off of him.

































































































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Old 10-05-2014, 01:28 PM
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Looks great. Did you use sch 40 steel weld els and pipe for the manifold? Looks like it. Just curious to what you can grow into. What compressor cover is that? I bet the spool is really good.

Last edited by slow ride; 10-05-2014 at 01:31 PM.
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Old 10-05-2014, 01:57 PM
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Originally Posted by slow ride View Post
Looks great. Did you use sch 40 steel weld els and pipe for the manifold? Looks like it. Just curious to what you can grow into. What compressor cover is that? I bet the spool is really good.
Yes, I used 1.5" weld els with a 1/2" 1.9" port flange. I'm running E covers. I'm hitting boost at only part throttle already, very peaky. I haven't done a full pull yet though, I'm building a catch can today so I won't be pushing oil all over my fuel rail covers
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Old 10-05-2014, 02:25 PM
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Wow. Looks like you made quick business out of it!
Should be quite fun.
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Old 10-05-2014, 02:34 PM
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Do you run a front air dam or top cover?
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Old 10-05-2014, 02:35 PM
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Be careful with that early boost it can break stuff if you rattle the motor at low rpm. How did you end up on the inlets?
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Old 10-05-2014, 04:41 PM
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Originally Posted by BLOWNBLUEZ06 View Post
Wow. Looks like you made quick business out of it!
Should be quite fun.
A little too quick, but it's my DD so I had to work fast.

Originally Posted by danieloneil01 View Post
Do you run a front air dam or top cover?
Both, hard to explain, but I cut my factory shroud and run the air damn up to the IC and then from the radiator it runs to bumper cover. I still need to seal the sides a bit better. Pics probably tomorrow or the next day once I finish that piece.
Originally Posted by slow ride View Post
Be careful with that early boost it can break stuff if you rattle the motor at low rpm. How did you end up on the inlets?
I have flex hoses for now. Wednesday I should have a new order of piping come in and my Argon bottle refilled. Most likely it will be very similar or exactly like your drivers side pipe.
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Old 10-05-2014, 07:36 PM
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Please post as many as you can
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Old 10-05-2014, 09:17 PM
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Excuse me sir what intercooler is that ?
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Old 10-05-2014, 11:02 PM
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JDS99
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Congrats Jim!

Work through the little issues, and enjoy it!!

I think you should share a timeline of your build. No doubt, has got to be the fastest C5 twin turbo build on record
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Old 10-05-2014, 11:16 PM
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Originally Posted by danieloneil01 View Post
Please post as many as you can
Will do.

Originally Posted by igtabg1 View Post
Excuse me sir what intercooler is that ?
CX racing I believe.

Originally Posted by JDS99 View Post
Congrats Jim!

Work through the little issues, and enjoy it!!

I think you should share a timeline of your build. No doubt, has got to be the fastest C5 twin turbo build on record
other than the manifolds one 4 day weekend and 3 5 hour days after that. Manifolds were actually the most satisfying part, only a day spent on each.
I was out tuning tonight and in CL I can't get the NB O2's to oscillate under idle and no load conditions. I'm thinking the Turbos are actually restricting the exhaust flow. Haven't decided If i'm going to play with the proportional gain table or just cut out the cats to free things up a bit. BTW haven't gone over 80%TPS for longer than 2 seconds and she's already logged over 48lbs min of airflow. I'm thinking I'll hit 600whp at 8psi no problem.

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Old 10-06-2014, 12:45 AM
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Originally Posted by jimbos'ss View Post
Will do.


CX racing I believe.


other than the manifolds one 4 day weekend and 3 5 hour days after that. Manifolds were actually the most satisfying part, only a day spent on each.
I was out tuning tonight and in CL I can't get the NB O2's to oscillate under idle and no load conditions. I'm thinking the Turbos are actually restricting the exhaust flow. Haven't decided If i'm going to play with the proportional gain table or just cut out the cats to free things up a bit. BTW haven't gone over 80%TPS for longer than 2 seconds and she's already logged over 48lbs min of airflow. I'm thinking I'll hit 600whp at 8psi no problem.
Thank you sir I was looking into this intercooler my self, while I entertain the idea of a rear mount. How do you like the over fit of the intercooler ? I am assuming you had to change the tabs on the radiator to make room for the intercooler ? Thanks again and very nice build. I'm subscribing for more pictures.
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Old 10-06-2014, 03:43 AM
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Lookin good Jim!
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Old 10-06-2014, 07:46 PM
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Thanks Mike!
Originally Posted by MVP'S ZO6 View Post
Lookin good Jim!
For those asking about my IC and radiator shrouding, here's some pics.










As you can see I cut up the stock shroud, ran it up to my IC from the bottom. And ran it from the radiator to the top of the Ic. I still need to put in more plastic on the sides to fully seal it.
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Old 10-10-2014, 02:06 AM
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Are you still running a MAF or is is just in there for IAT purposes?
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Old 10-11-2014, 07:34 PM
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Originally Posted by MVP'S ZO6 View Post
Are you still running a MAF or is is just in there for IAT purposes?
Still running it for the time being. At least until the 317 heads and ls9 gaskets go on 😉
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Old 10-12-2014, 11:44 AM
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Intakes complete. I need to put the brake cooling ducts back in.



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Old 10-12-2014, 08:27 PM
  #18  
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Looking good from the prossion pics
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Old 10-13-2014, 03:11 PM
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Originally Posted by JoeyG View Post
Looking good from the prossion pics
Thanks, working on the little issues right now. Hope to have a track pass in soon.
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Old 10-13-2014, 10:27 PM
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Just gotta cap the bottom and build one more.









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