Please explain how to change the comp 12 chra and what does that mean in english ?

 

Blouch turbo changed one out for a friend of mine. It's the center housing rotating assembly...basically the compressor wheel, center shaft and the turbine wheel....it adds a larger comp wheel that will flow more air through the GT2871R turbo that is on the Incon/LPE set-up.

 

I believe this was done my NLP with a customer who had a C6 kit with a 427. Car had issues making power but I believe as soon as they played around with the turbo and changed out the wheel and other stuff they made 700 rwhp which is pretty impressive coming out of a C6 kit with those small turbos.

 

I don't think APS is closed down...Peter from APS replied to a thread on LS1tech just yesterday....

 

HUH.. I wonder what they charge to change it on mine ..

i guess Ill wait till couple of other aps owners play with a few other theories.. and if all else fails .. next summer with fuel system i will change the wheel..

thanks for the info

 

Scroll to the "CHRA core assembly" section for the -12 ( 700177-0012)
specs:

http://www.turbofast.com.au/GTseries.html

The APS TT C6 kit (GT3076R) uses a -11 CHRA

Sam, your TDO6's are 16g or 20g??

 

arent they 20G?

 

Mic on:

Making close to 700rwhp w/out a REAL supporting fuel system is a blessing IMO. If the car made more I think you would be complaining about building a new motor. Dont believe everything you read on the forums. I think I have mentioned that to you b4. Get all the supporting mods that YOU need for YOUR car and then play. Every car is different. Using other examples from others that have the same kit means absolutely nothing unless you helped build and put together their combo personally. Too many variables that influence the final outcome. Do you think all of the other turbo kits instantly makes 800rwhp? Why should yours? Look at all the peeps on this forum with turbo Vettes and ask yourself who has actually made and displayed a 800rwhp dynosheet or has run the times that reflect 800rwhp. Hell we have sponsors on this very forum riding the coat tails or n@# sacks of others and they have not produced a 800rwhp turbo car. I asked a long time ago for someone to make a post asking for all the 800rwhp turbo cars to post up their SAE dynosheets. That was not done. Some make it seem like there are 800rwhp TT Vettes around every corner. That is simply not true. Some make it seem like all you have to do is bolt on a kit and it will make the power w/out a well matched engine combo with supporting fuel. That is simply not true.

The APS kit will go through stages just like any other kit. Maybe Peter marketed the kit absolutely wrong, but at this point who cares? For 90% of Vette owners that kit makes more than enough power than they will ever use. On this very forum YOU claim you cant get traction with the power you currently have, but you want to spin more? Do you want to win a burn out contest?

Cartek has proved that it makes the #. Vette Doctors said they never pushed the car they did so using that car as an example to say the kit only makes a certain power level means nothing. So what they turned the boost up a little and the car barely made more power. VD did not look into that because the customer was happy with the results. If VD would have pursued it maybe then we would know if the problem was kit related or not. If you can get that owner to go back to Vette Doctors asking for more I am sure VD will tell us if they had to modify the kit or not.

To me it just seems MUTE to continue complaining about your SUPERCAR until YOU can 100% rule out YOUR non turbo kit combo as being the problem. I personally think your car is kick azz and is doing VERY well for the mods done to it. I have no doubt when you decide to step to the next level you will reach 800rwhp plus.. For what you paid for the kit I think you should be happy. If you are happy I cant tell from your post on this very forum. Many of the top tuners/vendors on this very board report it is a top notch twin turbo kit. I think that says a lot when you look at the C5 turbo kit history. Enjoy your car and save up some coin for the next round of mods. Some of us plan to take this twin turbo thing to the next level

Mic off:

 

Hmmm... my LPE kit produces that rwhp at 14 psi, so this statement assumes there's nothing left after that, even with 3 psi more. I'm not planning on testing this, but I do doubt it would make little/no difference to turn up the boost on my car.

I would still bet Vegas' situation is excessive backpressure. Vegas, I don't personally think this 'problem' is your compressor. You don't seem to have any difficulty producing more boost, right? It just doesn't produce more rwhp. I still suspect that is a classic backpressure situation.

If you haven't already, go to www.turbobbygarrett.com and check out their TurboTech 103 article about choosing the appropriate turbo. They describe this situation exactly and attribute it to backpressure and proper turbine A/R selection.

Erik

 

APS has purchased a C5 ZO6 though the car is curently six weeks away from arriving at our facility. When we have received the C5 our tech guys will start on the project as soon as possible.

Peter

 

The turbine flow of the C5 turbochargers will max out at around 850-900 rwhp (dyno jet) at around 18 PSI pressure. I think it's far more likely that the turbo air entry inlet ducts are restrictive at high boost levels and this is where our engineering guys will start testing when the ZO6 arrives at APS, hope that helps,

Peter

 

Peter,, do you think the air ducts are possibly calapsing from all the suction? .. maybe Dan or someone else can test the car with the ducts off.. it takes 2 minutes to take them off.. i wish i had thought of that when i was at LAPD last month.. that would be awesome if that is the only issue.. looking at the LPE car the only diffrence i see between the aps and LPE kit is the LPE uses piping not the accordian style on the APS kit.




thanks Peter for taking the time to answer the questions

 

Vince,
have you seen me complain? I have said it many times over that i am very happy with the kit... and Yes i did say traction is an issue when temp drop under 80 ... i know winter time i wont hook with 7psi... but here is what crossed my mine , If i were to get into a race with a built porsche(or any car) and we get into the higher speeds over 120 and i he starts to pull on me when im running 11.6 psi it would be frustraning not to able to turn the boost at that speed and pull on him.. do you understand what i mean?.. do you know how many races i have seen , SUPRA's, VIPERS etc.. catch people after the 1/4 mile.. a shetload. I would hate for that to happen to me.

You are 100% about the fuel system and i will address that as i said i will be buying ECS or some other fuel system next summer and then turn the boost up( only if i can figure out why it wont make more power with higher boost .. otherwise a waste of money)

Vince.. its not like i sit home crying or pissed off at the world about the kit lol.. im just having fun here and VERY curious to find the answer to the restriction NO more NO less.. 700 is awesome and if down the road i can get more with a "TOUCH" of a button .. then more power to me(no pun intented )

 

Well for sure you know the biggest restriction. Can you say fuel system? If you are worried about getting beat by another car then dont worry.. It will happen. You will never be the fastest sir. It amazes me when people purchase a budget kit and want to beat heavily modified Vipers, Porsche's and Supras.

Keep having fun in your car. You have a very nice TT C5 and it is good you dont sit at home crying or pissed off at the world about your kit. That would really suck if you did. No pun intended..

 

Vince,

The fuel system is NOT the restriction at 13.1 psi ( over 14 you have a case and i would not try that with my current setup).. fuel was there , but power was not.
I know i wont be the fastest ( there is a 1700 hp viper in vegas somewhere driving around) but if i lose . i want to lose at my best and if someone can beat me with 16-18 psi .. then hes the MAN or women and i will lose gracefully.

 

Sounds like fun where you are.. We have some pretty stout TT Vipers locally as well. Hell we have over 1000rwhp Supras and Porsche's trapping over 150mph rolling around. I pick and choose my races cautiously. Right now it is too hot to race. I just got my AC repaired and plan to get my car retuned soon for some 3 bar SD fun...

 

I saw the video in another post you put up with the supra running 9's ,, just unreal and mad props to those guys..I lived in FL for 18 years in plantation .. FL has some bad azz cars cruising around and will play without hesitations..

in Vegas its seems there are ALOT less players with over 700 rwhp...

 

Come to Jerzee and I'll play.

 

race must be from a DIG and you have to RUn full boost in 1st gear

when APS figures it out and i can make over 800 we can play ..

i have never seen you 1/4 mile numbers? do you have any?



PS: I lived in west new york (new jersey) in 84-85.. hate it .. to dam cold in the winter and the snow...don't get me started...

 

Nothing has changed since you left. So many stout cars rolling around. When I asked Dr. Phil to build my combo I mentioned to him I wanted to be able to keep up with 1000rwhp Supras.. I think that is very possible once I get the enhanced tune and run some higher octane fuel. I just hope the rest of the Dr. Phil combo is up to the task. Dr. Phil reports all the time no one has maxed out the standard X turbos yet. I dont plan on maxing them out, but I will dyno up to 18-20lbs max if the clutch will hold and pray the fuel system will not let me down. At this point I could care less if something breaks. Atleast I will know the weak point in this system..