Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Forced Induction (http://www.the370z.com/forced-induction/)
-   -   So just ordered my Stillen SC (http://www.the370z.com/forced-induction/91144-so-just-ordered-my-stillen-sc.html)

mikey1600 07-23-2014 08:07 AM
Quote:
Originally Posted by Team_STILLEN (Post 2904431)
I have seen some issues when people try to pass 450 whp. I've seen a few doing 430-445 whp without too much issue. Past that we are still testing right now. We are developing a high boost kit and are seeing what needs to change to make it safe and reliable power upgrade.
it would also be amazing if you guys tested E85 with the current kit + upgraded kit you are developing. I'm sure if there were good results, heaps of people would jump onto this. There is another guy with the GTM SC that is doing an E85 upgrade at the moment, waiting to see his results and if they are good I'll be going this route as well.

gussyturbo z 07-25-2014 09:22 PM
Quote:
Originally Posted by ANMVQ (Post 2905268)
Not really anything with the kit "if" you only looking for 450WHP. I personally don't like the heat exchanger bolted to the radiator. You guys should really look at what I did and the hand full of guys here and followed me and used a front mount heat exchanger, there is plenty of room. The other issue is our MAF's( Voltage will max out) Myself and Cliff ran into this issue but again that's if your looking 470ish . I had your Impeller upgrade and UPREV MAF's an was pushing 457WHP and the kit held up fine!! How ever on the other side of that was the sh&t install I had of the fuel pump.

I also had injectors and DW300 pump. I had the pump only cause the dealer killed the wally, and injectors were just incase I reached 500WHP, Which you wont see unless you have a built block.. Boost will be to high to get there on the the stocker, My 457WHP was at 11-12 PSI. You need like 16 to get to 500WHP.

To make 450WHP on your kit you would probably need nothing other than the front mount heat exchanger. :) ..
Hey bud did you have the 9lb pulley and the upgraded impeller? Im thinking of doing the impeller next.

ANMVQ 07-26-2014 08:19 AM
Quote:
Originally Posted by gussyturbo z (Post 2908730)
Hey bud did you have the 9lb pulley and the upgraded impeller? Im thinking of doing the impeller next.
Hey , I did not . I would have seen too much boost on a stock block. With the 9lbs pully I would been 13-14 PSI . At the time my tuner told me that would be too much on the st ok bottom end. I do know I snapped a rod at 11-12 PSI but there other issues. What PSI AND WHP you at now? I really wouldn't go 12+. But that's just me. Even if I don't go back to Stillen ( really want to) but tossing some ideas about FI twins and AAM twins. If went that route is be at 6-7PSI at the most. If I go Stillen I'm not changin the boost just the heat exchanger again. I can live with 400+ WHP I think ;/

Z&I 07-26-2014 11:29 AM
Quote:
Originally Posted by gussyturbo z (Post 2908730)
Hey bud did you have the 9lb pulley and the upgraded impeller? Im thinking of doing the impeller next.
I did exactly this ... wanted to make 500whp.

Upgraded the Vortech Impeller to SI trim and used the Stillen 9 lb pulley ...
It produced 483 whp/ 378 tqe at 11.9 psi.

Grenaded the stock motor as a result, and now I am having to rebuild it.
(Should have built the motor in the first place, it would have saved me time, money, and grief).

Can't say for sure if your stock motor will hold up, but I definitely wouldn't do both the impeller and pulley at the same time...

gussyturbo z 07-26-2014 01:16 PM
Quote:
Originally Posted by Z&I (Post 2909152)
I did exactly this ... wanted to make 500whp.

Upgraded the Vortech Impeller to SI trim and used the Stillen 9 lb pulley ...
It produced 483 whp/ 378 tqe at 11.9 psi.

Grenaded the stock motor as a result, and now I am having to rebuild it.
(Should have built the motor in the first place, it would have saved me time, money, and grief).

Can't say for sure if your stock motor will hold up, but I definitely wouldn't do both the impeller and pulley at the same time...
Do you guys think that the test pipes could cause a little loss of hp? I had cats on it and it seems like it's a little sluggish at times. I'm thinking about going back to cats. Plus the fire balls were pretty cool.

Z&I 07-26-2014 06:30 PM
Hard to say what is going on with your car without looking at the dyno sheet or test driving it ...
It could be almost anything.

But any time you change or alter something in the power train you are going to affect everything else as well.

Your car might benefit by the back pressure caused by the cats.

I had PPE long tube headers with no cats on my car ...
That combo created an easier exhaust flow with a smoother scavange, but at the cost of increased loudness, emission odors, and perhaps a little drop in torque.

With the tune - my car did have a pretty flat torque curve which all but eliminated the flat spots during acceleration.

Hope this helps...

Z&I 07-26-2014 06:34 PM
MIKEY !!!

Quote:
Originally Posted by ANMVQ (Post 2909018)
I would have seen too much boost on a stock block. With the 9lbs pully I would been 13-14 PSI . At the time my tuner told me that would be too much on the st ok bottom end. I do know I snapped a rod at 11-12 PSI but there other issues.
Were you on the COG pulleys at this time ??? Other issues ???

Team_STILLEN 07-28-2014 10:30 AM
Quote:
Originally Posted by gussyturbo z (Post 2909242)
Do you guys think that the test pipes could cause a little loss of hp? I had cats on it and it seems like it's a little sluggish at times. I'm thinking about going back to cats. Plus the fire balls were pretty cool.
Test pipes will cause you to lose some boost pressure in the cylinder. We have seen around 10-20 whp losses with HFC's and Test Pipes.

diego@vossen 07-28-2014 11:27 AM
I was running HFC's with my Stillen SC and recently went back to the stock cats, results are much better now. Car is running great.

mikey1600 07-28-2014 11:41 AM
Quote:
Originally Posted by Team_STILLEN (Post 2910913)
Test pipes will cause you to lose some boost pressure in the cylinder. We have seen around 10-20 whp losses with HFC's and Test Pipes.
will this change with your high performance kit being tested or will it be better with HFC's/test pipes with higher boost levels from the supercharger?

ANMVQ 07-28-2014 12:01 PM
Quote:
Originally Posted by Z&I (Post 2909495)
MIKEY !!!



Were you on the COG pulleys at this time ??? Other issues ???
Hey BOB! Negative man, The dealer screwed those up too bent sh^t and what not. But I think it was better cause I would have gotten ZERO days of driving it before it popped, at least I got 3 days out of it. :/

Trying to get another SC kit , with No heat exchanger or tuning, . Just the kit and a trans cooler, that's all I need. Along with a place it install it :excited:

I don't even o to that dealer for oil changes LOL, I wouldn't let them plug a tire on my car. probably for get to bolt the wheel back on or break a stud ;/

diego@vossen 07-28-2014 12:10 PM
The Stillen kit is awesome, just don't go outside of all their recommendations like swapping the Impeller and running Test Pipes. With all the basics and a good tune you're going to enjoy it.

My current setup consists of the Stillen SC with the supplied 600CC injectors and stock MAF with a 9PSI pulley. I added the 25 row oil cooler and currently running the stock cats with a Meisterschaft Catback exhaust.

I won't do anything else except swap the injectors for 1000CC with UPREV GT MAF and a re-tune but that's as far as will go.

future370zzz 07-28-2014 02:24 PM
Really have to watch the AIT at the manifold, it goes up really fast even if you're messing around. After the car is warmed up (heatsoaked), it can go up 30 degrees during quick 2nd gear pull.

I can see why people are blowing motors during drag races. Too much heat causes detonation. Can't really push it when it's hot outside otherwise you're asking for trouble. If you don't have a vented hood, sitting idle or just turning off the engine will bring the AIT's up beyond the heatsoaked temp. I am seeing around 140 degrees when the car is warmed up. Oil at 180 and trans at 180.

Need to vent the hood or upgrade the heat exchanger.

ANMVQ 07-28-2014 02:32 PM
Quote:
Originally Posted by future370zzz (Post 2911191)
Really have to watch the AIT at the manifold, it goes up really fast even if you're messing around. After the car is warmed up (heatsoaked), it can go up 30 degrees during quick 2nd gear pull.

I can see why people are blowing motors during drag races. Too much heat causes detonation. Can't really push it when it's hot outside otherwise you're asking for trouble. If you don't have a vented hood, sitting idle or just turning off the engine will bring the AIT's up beyond the heatsoaked temp. I am seeing around 140 degrees when the car is warmed up. Oil at 180 and trans at 180.

Need to vent the hood or upgrade the heat exchanger.


100% right, I had both :tiphat:

JWillis72 07-28-2014 04:42 PM
I pushed mine all day yesterday with the temps and humidity in the upper 90s and it never missed a beat. I do have meth injection but it was acting up so I didn't use it at all.


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