If you have this set-up chime in with charts, boost levels, and what are the absolute limits of the 60-1 on a 8.8:1 compression level in terms of whp and boost?

Thanks in advance, I am trying to determine whether to go ahead and get a built engine and throw the car some serious boost until the stage 2 comes out!

Miaplaya feel free to enlighten everyone on a tenative release date and price if it is available.

Craig

 

They are still testing on the Stage 2 kit. They are trying about 8 different turbo setups. Among them T66/Stage V, T66/T4 P Trim, T61/Stage V, the list goes on and on. When thry find the combo the produces the best results Stage 2 will be done. I think they have tested 3 so far. I'll keep everyone posted as I know more.

As for a built motor and Stage 1. Maxing the turbo should get you about 500 WHP. Modified Mag already did something similar. Click HERE for more info on it.

 

On stock cams and lower compression than stock Id say 450-475whp on a dynojet. Hopefully with cams that would be closer to 500whp...we dont really know for sure yet as Ive only seen 1 Z do it and thats Modified Mags Z.

Rich-Shervins car isnt a stage II, its a Stage 1 with a custom turbo

 

Yeah, building your own setup with an upgraded turbo isn't necessarily a "stage 2" kit. I'm not sure why people have taken the liberty to label them as such. There's nothing like getting a complete upgrade with properly built/matched turbo and supporting modifications.

 

does anyone know what else, besides the turbo, is being changed upgraded on the stage 2? piping size? intercooler? exhaust piping size?, wastegate?, bov?

 

Turbo, wastegate, possibly BOV, injectors, EMS, water/meth kit, some possible piping changes, etc.

 

Well every 14.5psi you are doubling the output of the motor. So @ 14.5 psi of boost we should make 488 rwhp. With headers maybe another 10 rwhp.

Respect
JET

 

It doesn't work like that. Double the atmospheric pressure does not equal double the CFM necessarily, and airflow volume is chief among what determines your power output.

 

True that.... it's a rough rule of thumb. Sorry I couldn't use my Cray super computer to crunch some numbers down to .0000000000000000001 for you. I'm downloading ALL the **** on the internet with it.

JET

 

On the stage 2, it seems like to me after talking to Sharif, he suggested to me that one of the reasons huge power isn't made by the TN kit is because of the back pressure created by the smaller exhaust housing on these one of custom turbos. Also, wouldn't you agree at some point the spearco intercooler is going to become inadequate? I can't understand why the efficiency range on this turbo is 575 horsepower on any website that sells them: turbo-kits.com, forgedperformance.com, and many more, but just as many of you have said and I would agree they maximum efficiency of this turbo would be 500 whp, can't understand.

I am curious if this is because of the horspower rating is at the engine, if it is the number makes sense.

 

500whp is roughly 575 crank hp, its close....

 

This is exactly what I have/ will have hopefully by the end of next week. My engine builder should be finishing today and hopefully the complete install will be done by next friday. I won't be able to give you any WHP #'s until after the 1000 mile break in period. I will am planning on having turboXS tune it. I am supposed to get their opinion on HP goals sometime today. I have been told many different stories by many different people, so I am really curious to know what this actually puts down. I believe that a good estimate/ average from what I have been told should be about 450-475. I might be able to get slightly higher, by running higher boost levels, due to my 1/2" head studs. After I get a baseline from this setup My plans are to either Upgrade the housing or do a core swap for the T66. I will also eventually be adding the Tomei 268 cam and alittle valve work. I'll keep you posted,...wish me luck!

 

Just realized that My signature still had the original estimate for HP. now I've updated it to the realistic!

 

After about 16psi its past its efficiency, keep that in mind. 1/2" head studs wont help you run crazy boost on this specific turbo....

 

I was thinking along the lines of 14.5-15. I have just heard of alot of people having the head lift issues, so it's gotta help.

 

You missed my point or maybe I wasnt too clear. 1/2" studs WILL help, but in your quest for more power than what everyone else would get out of the 60-1 your limited by that snail and not head lift....

 

Any time you read a compressor map and calculate HP worth of air its in Crank Hp. You still need to deduct drivetrain loss from the number. There is a reason why Stage 2 is not released yet. Turbonetics has not finished testing to determine which turbo is best suited for this application. Anyone out there who has a custom setup is not necessarily going to make the same power with same boost threshold for a number of factors. Aside from just playing with compressor wheel trim, turbine wheel trim, and wheel sizes they are also expirmenting with the A/R of the turbine housing.

 

I see what you're getting at and I agree. The turbo will be my limiting factor FOR NOW. It also sounds like once I get this thing up and running I should probably wait until the stage 2 testing is done by turbonetics to make sure I will have the optimal setup in the long run without blowing too much of my money trying to figure it out my self. I should be happy for a short while with 450-475!

 

Yep. I think that's what people have been saying all along. Have some patience and the wait will be worth it.

 

I understand now, I will most likely get the built longblock, abuse my 60-1, then get the stage 2 and hope for the best.