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-   -   Twin Turbo C5Z (https://www.corvetteforum.com/forums/c5-forced-induction-nitrous/3543201-twin-turbo-c5z.html)

jimbos'ss 10-05-2014 10:59 AM

Twin Turbo C5Z
 
My build in pics :D
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. :cheers:
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slow ride 10-05-2014 01:28 PM

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.

jimbos'ss 10-05-2014 01:57 PM


Originally Posted by slow ride (Post 1587976986)
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 :rofl:
https://cimg9.ibsrv.net/gimg/www.cor...29281eba12.jpg

BLOWNBLUEZ06 10-05-2014 02:25 PM

Wow. Looks like you made quick business out of it!
Should be quite fun.

danieloneil01 10-05-2014 02:34 PM

Do you run a front air dam or top cover?

slow ride 10-05-2014 02:35 PM

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?

jimbos'ss 10-05-2014 04:41 PM


Originally Posted by BLOWNBLUEZ06 (Post 1587977266)
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 (Post 1587977318)
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 (Post 1587977323)
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.

danieloneil01 10-05-2014 07:36 PM

Please post as many as you can :)

igtabg1 10-05-2014 09:17 PM

Excuse me sir what intercooler is that ?

JDS99 10-05-2014 11:02 PM

Congrats Jim! :cheers:

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 :crazy:

jimbos'ss 10-05-2014 11:16 PM


Originally Posted by danieloneil01 (Post 1587978873)
Please post as many as you can :)

Will do.


Originally Posted by igtabg1 (Post 1587979619)
Excuse me sir what intercooler is that ?

CX racing I believe.


Originally Posted by JDS99 (Post 1587980213)
Congrats Jim! :cheers:

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 :crazy:

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.

igtabg1 10-06-2014 12:45 AM


Originally Posted by jimbos'ss (Post 1587980293)
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.

MVP'S ZO6 10-06-2014 03:43 AM

Lookin good Jim!

jimbos'ss 10-06-2014 07:46 PM

Thanks Mike!

Originally Posted by MVP'S ZO6 (Post 1587980877)
Lookin good Jim!

For those asking about my IC and radiator shrouding, here's some pics.

https://cimg5.ibsrv.net/gimg/www.cor...3d7aa81cbe.jpg




https://cimg7.ibsrv.net/gimg/www.cor...6c157348eb.jpg


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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.

MVP'S ZO6 10-10-2014 02:06 AM

Are you still running a MAF or is is just in there for IAT purposes?

jimbos'ss 10-11-2014 07:34 PM


Originally Posted by MVP'S ZO6 (Post 1588011207)
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 😉

jimbos'ss 10-12-2014 11:44 AM

Intakes complete. I need to put the brake cooling ducts back in.
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https://cimg3.ibsrv.net/gimg/www.cor...b10f8884be.jpg

JoeyG 10-12-2014 08:27 PM

Looking good from the prossion pics

jimbos'ss 10-13-2014 03:11 PM


Originally Posted by JoeyG (Post 1588028227)
Looking good from the prossion pics

Thanks, working on the little issues right now. Hope to have a track pass in soon.

jimbos'ss 10-13-2014 10:27 PM

Just gotta cap the bottom and build one more.
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