TT Inferno [COTW 9/26/16]

[Tajefe Couple]

Originally Posted by djcolopi

Still working out some last minute bugs. We ran into a bit of a delema because of how efficient this turbo setup is in this configuration. It spools so easily that the standard Garrett internal wastegate opening can't bleed boost fast enough and we are getting boost creep. So it spools right up to 12psi at the start of the run but as the rpm's go up the boost starts to climb as well and we need to have control of the boost levels for obvious reasons.

Of all problems that we could have it's not a bad one because it shows the setup will be amazing when the bugs are ironed out. Unfortunately this means a delay.

JE will be pulling the turbo's off and porting the opening for the internal gate as a first attempt at solving this problem. Obviously adding some back pressure via high flow cats would solve the problem and be the quick fix but we want to maintain this free flow setup if possible so will try this first.

This is a very common issue with many OEM turbo cars like the mazda speeds and subaru's when you do cat deletes and 3" exhaust setups. Very low back pressure can make these cars creep as well.

If this mod works we will be back in action soon. If it still creeps we may end up needing larger external waste gate setups vs the standard Garrett internal type.

With a bunch of dyno time at this point the gravity drains on the turbo are working flawlessly so that's great news. Amazing how clean and tidy this turbo kit is and how well it fits. Seems like it's OEM!

Still can't get over how ridiculously fast it spools up!

Oh, and for those that are eager to join the gravity feed twin turbo club and not deal with the scavenge pump setup JE said they will be willing to do a limited run on a made to order basis but will require them to be installed at the shop only. Eventually they would be able to build jigs and mass produce so it would be available for order and install anywhere. For now your going to need to go to Maryland to get it! Hit them up for more info if your interested. sales@jeimportperformance.com

Thanks for the email. I shot them a message already. Still can't decide what direction to take mine if any next???

[djcolopi]

Originally Posted by tajefe

Thanks for the email. I shot them a message already. Still can't decide what direction to take mine if any next???

No problem. If you have any questions on the build and setup hit me up.

[SSE 4 2SS]

Wow,

I'm sorry I haven't looked in here sooner... This car is going to be a beast... No wait, it sounds like it already is with 12 lbs... I'm looking forward to seeing the numbers, from the track...

Quick comment based on what I've seen... With the inter cooler stacked right up to the bumper like mine originally was, have you thought about back cutting the bumper to allow more air flow to a larger surface area... We lost a bunch of IaT' by doing that... We cut the backside the width of the inter cooler, and left the top the full thickness, and the bottom is almost flush to the front surface... Then boxed it back in with the new back piece being angled forward from top to bottom if you follow that... Then we added gusset to fill in the remainder to regain the strength... I might have a couple pics if you're interested...

[djcolopi]

Originally Posted by SSE 4 2SS

Wow,

I'm sorry I haven't looked in here sooner... This car is going to be a beast... No wait, it sounds like it already is with 12 lbs... I'm looking forward to seeing the numbers, from the track...

Quick comment based on what I've seen... With the inter cooler stacked right up to the bumper like mine originally was, have you thought about back cutting the bumper to allow more air flow to a larger surface area... We lost a bunch of IaT' by doing that... We cut the backside the width of the inter cooler, and left the top the full thickness, and the bottom is almost flush to the front surface... Then boxed it back in with the new back piece being angled forward from top to bottom if you follow that... Then we added gusset to fill in the remainder to regain the strength... I might have a couple pics if you're interested...

At the moment the setup is actually making to much boost because I am getting so much air flow; 3" intake piping, 80mm throttle body (stock is 72.5mm) and a 3" free flowing exhaust. At 4800rpms we were recording 20psi and we had to stop as it kept increasing. However, I can look into your suggestion; feel free to post up any pictures and suggestions. Thanks

[SSE 4 2SS]

Originally Posted by djcolopi

At the moment the setup is actually making to much boost because I am getting so much air flow; 3" intake piping, 80mm throttle body (stock is 72.5mm) and a 3" free flowing exhaust. At 4800rpms we were recording 20psi and we had to stop as it kept increasing. However, I can look into your suggestion; feel free to post up any pictures and suggestions. Thanks

I'll look on my puter tomorrow and see what I have... Boost is one thing, but cooling the charge is what I'm getting at...

I hope they get you sorted out soon... I know how it feels not driving the car while its in the shop... Mine has been in the shop the better part of five years, but the results are worth it...

[rgrmoreira13]

Originally Posted by SSE 4 2SS

I'll look on my puter tomorrow and see what I have... Boost is one thing, but cooling the charge is what I'm getting at...

I hope they get you sorted out soon... I know how it feels not driving the car while its in the shop... Mine has been in the shop the better part of five years, but the results are worth it...

I was reading it and I was wondering that as well. How much heat are you producing in the engine bay ?? Do you have anything in place that you are going to do to lower that temp in there before you fry your wires and everything else in there ?
While I seem to be negative about this I am estatic that you are in the process of making a monster out a V6 auto which has been seen as one of the slowest Camaro's there. (Because of the 2.92 gear and it is super fuel efficient etc)

[djcolopi]

Originally Posted by SSE 4 2SS

Wow,

I'm sorry I haven't looked in here sooner... This car is going to be a beast... No wait, it sounds like it already is with 12 lbs... I'm looking forward to seeing the numbers, from the track...

Quick comment based on what I've seen... With the inter cooler stacked right up to the bumper like mine originally was, have you thought about back cutting the bumper to allow more air flow to a larger surface area... We lost a bunch of IaT' by doing that... We cut the backside the width of the inter cooler, and left the top the full thickness, and the bottom is almost flush to the front surface... Then boxed it back in with the new back piece being angled forward from top to bottom if you follow that... Then we added gusset to fill in the remainder to regain the strength... I might have a couple pics if you're interested...

Yeah what your describing for the bumper support mod makes sense. Will consider if the data says we need to make an adjustment. Currently IAT's are really good. The intercooler is pretty massive and 3/4's of it is in direct airflow so if it's staying happy on the dyno with fans. Typically if good on the dyno it should be better driving around. Appreciate the tip though!

[djcolopi]

Originally Posted by rgrmoreira13

I was reading it and I was wondering that as well. How much heat are you producing in the engine bay ?? Do you have anything in place that you are going to do to lower that temp in there before you fry your wires and everything else in there ?
While I seem to be negative about this I am estatic that you are in the process of making a monster out a V6 auto which has been seen as one of the slowest Camaro's there. (Because of the 2.92 gear and it is super fuel efficient etc)

Yes, heat in any turbo setup is a concern. No major difference here though vs the lower mounted scavenged setups that everyone has. Something we will no doubt keep an eye on though. Turbine housings got a ceramic coating to help keep some of the heat in the exhaust. If needed down pipes will receive the same treatment or a wrapping. When JE designed the setup they were careful about placement and what the turbo's are close to so there should not be an issue. Being the first of it's kind though we always expect a couple bugs or issues to work through, all part of prototyping and R&D though.

[Tajefe Couple]

Originally Posted by djcolopi

Yeah what your describing for the bumper support mod makes sense. Will consider if the data says we need to make an adjustment. Currently IAT's are really good. The intercooler is pretty massive and 3/4's of it is in direct airflow so if it's staying happy on the dyno with fans. Typically if good on the dyno it should be better driving around. Appreciate the tip though!

Love your build but just want to point out really good is not an actual measurement. Curious what some of your good readings are. Could you share those also? What I'm getting at is maybe good to you is not so good to me?

[Taco Time]

Very cool build. I dig it! And you can never have too much heat protection. The entire hot side of my turbo system is ceramic coated. Then some parts have heat wrap also.

[Pt_killa]

Awesome build, finally a lfx setup without a scavenge pump! From your pic it looks like the turbine housing bolts directly to the integrated mani collector port on the block, did you have to build a custom turbine housing with a compatible flange or does Garrett have special order housings for the lfx? Best of luck with the tuning and hope you can break into the 10s or lower!

[djcolopi]

Originally Posted by tajefe

Love your build but just want to point out really good is not an actual measurement. Curious what some of your good readings are. Could you share those also? What I'm getting at is maybe good to you is not so good to me?

Ha ha, yeah I understand that. I'm personally not building or designing this. The guys at JE/Sikky are. I'm just relaying info in layman's terms as I get it. I'm sure when the time comes to make this a production kit they will have that info available. For now that's all I have on that subject. What #'s are you seeing on your setup?

[djcolopi]

Originally Posted by Pt_killa

Awesome build, finally a lfx setup without a scavenge pump! From your pic it looks like the turbine housing bolts directly to the integrated mani collector port on the block, did you have to build a custom turbine housing with a compatible flange or does Garrett have special order housings for the lfx? Best of luck with the tuning and hope you can break into the 10s or lower!

Custom turbine housing. Sikky has contributed the engineering and machining to this build and they made some prototype housings. Nothing off the shelf will work.

Thanks! yeah not sure if my auto trans will cooperate with 10's or lower, but we can try right!

[rgrmoreira13]

Originally Posted by djcolopi

Custom turbine housing. Sikky has contributed the engineering and machining to this build and they made some prototype housings. Nothing off the shelf will work.

Thanks! yeah not sure if my auto trans will cooperate with 10's or lower, but we can try right!

Are you going to change the transmission or the rear end to get rid of the 2.92 gearing ?

I know the 1LS and the all the V6 models except the 2LS has 3.27 gearing

My suggestion is to see if you can swap for the 3.73 gearing that the SS models has. But that is my 2 pennies rubbing together.