We'll lets get one thing straight, I'm definitely not making 435wtq as its not possible on such a small turbo.

Things still to be corrected:

1) fix that massive dip and loss in power. It's causing 4th to break loose and slip.

2) even out the power and be less peak power

3) dyno it for real. I'm representing SSP at the Kaizen show this weekend in Boston for any of you who are going. I may get on their dyno and see what numbers I'm actually making.

 

Your clutch is slipping
It's actually visible in the graph, at the exact moment yourboost peaks your clutches slip. As great a name as AMS is, they don't have any real great/successful SST builds. You are WELL within the safe limits of the SST, you just need the SST tables tuned (cpru, 3x2D, about 12 torque tables, and an odd one here and there); and a smoother peak boost, generally seeing an "angle" on the boost graph is not ideal.
Nice build so far, awesome to see some concrete results!
Oh and to clarify, you can definitely make +400wtq with that turbo, but things won't last very long.

 

Things not lasting long is not REALLY a concern right now. I just want to see what's possible. I will actually forward your info to my tuner. I appreciate it!

 

Over 400 WTQ is within "safe" limits? The max torque rating I saw for the gertag was listed as 400 lb/ft at the tranny and I remember reading Brian limiting his torque to around 330 WTQ to preserve the tranny.

 

Try re-reading what you quoted, the light bulb will come on.

 

Saying something over what the manufacturer listed as the max limit as safe is not negated by saying it won't last long. There is a difference between accelerated wear and it breaks because you put down too much power without the proper supporting modification. Putting down 330 WTQ and having the clutch wear out 30% (made up number) is accelerated wear, which is the whole won't last long. Putting down 25% more power then what the manufacturer listed as the max rating and then hoping your clutch doesn't break at a bad time in the future is not a safe way to modify your car and that isn't an aspect of the parts won't last long, it's a matter of you've broken the part, you just haven't realized it yet.

 

Seriously??
I want to create an argument over something that was NEVER said??

In what way does this state, even remotely, that 400wtq is "safe" for the SST? You are making up words that were never said.

 

Also... reality check here...

That torque spike in the VD graph is the clutch slip indication. It's not the actual at-wheel torque. It's that high because the SST isn't maintaining a tight lock from engine through to drivetrain.

VD watches rpm rise over time, and calculates torque from that. The rpm rise in that graph was due in part to SST clutch slip, so it calculated sky-high "torque".

The dip afterwards was the flipside. Slipping RPM was reined in, and normality reasserted itself.


Once the SST is set up to hold on tight at that point, you can take the resulting VD graph to the bank.

Rich

PS. My super-accurate Auto-Correcting Fudge-O-Meter has calculated your ACTUAL at-wheel torque at exactly 385.1337 foot-pounds.

 

Because maybe you SAID it was?

That is the portion of your advice I have issue with. Because it ISN'T safe. Not without a clutch pack.

 

Let's start with the free stuff, before we stampede to clutch packs, lol.


Jasoob, pm'ing you.

Rich

 

sstevojr said he is within the SAFE limits of the stock SST at the current ACTUAL power his car is making. He is right.

The Graph is WRONG. He is not making 435 TQ. That is what virtual dyno will display when clutches slip. Once the SST tables are adjusted in the TUNE, that slipping will stop, and the actual TQ numbers will display on the graph.

Now please, stop with the arguing. You misunderstood what was written, I'm assuming because you didn't know that the virtaul dyno graph was wrong, or why. Now you do. You've learned something new, and hopefully others will as well when they read this thread.

 

Thank you, I was starting to think I was losing my mind for a minute.
To reinterate, for the sake of total clarity:
1)VD calculates Torque based on rpm rise, when the clutches slip rpm shoots up, ergo a slipping clutch is VISIBLE as an absurd torque spike (in real life, if the car were to jump from 300wtq to 400wtq in 150rpm, his SST would just explode). The very first thing I said was:
2)The amount of torque that he IS making can be deduced from the power line/boost curve. He IS well within the safe limits of what a SST can handle, provided the SST tables are tweaked. The SST mananges torque through "anticipation". When anticipation v reality are vastly different it goes into self protect mode and releases/dumps all the built up energy (kinetcic?) in the clutch packs (I actually did this on a dyno, completely by accident, but cheek clentching/heart dropping none the less). When anticipated v actual are slightly off the clutches slip (a'la "torque spike" in VD).
Hell I've seen clutch slip so bad it said I had 650wtq. 1 year and 9 track days later SST drives better than ever (totally stock).

 

If we roughly assume 250whp at 4000 rpm (following the intended power curve) it says ~330wtq.
Further more, 300whp at roughly 5000rpm, says ~315wtq

 

I missunderstood nothing. There was nothing posted about the errors of the VD that would indicate that it would drop the TQ into the safe range. Does the clutch slip raise the WTQ rating by 50? 100? Depends on what RPM it does it at? If so what is the value when this happened? If some other new person had read that post, they too would have assumed that 400+ WTQ was within safe limits of our tranny from that comment and that is a bad bad thing. If I had not chimed in, would all the following calification of what is ACTUALLY considered safe have come up? I think the calification is quite a good thing personally...even if sstevojr had to get aggravated into giving it.

 

Since we are "being honest" rather than shoving words into my mouth to try and seem informed, try reading or saying "I don't uderstand".
The way VD works is publicly posted in the VD related threads.
The way the SST works is publicly posted in the SST related threads.
Richard, EyeDreamtand myself don't hold private meetings, and yet we all have the same knowledge.....how can that be???
I don't hold some special knowledge, it comes from reading the readily available info that is posted, and combining it with my own experiences. You made it quite clear that you don't understand how these things work. Rather than asking for clarification, you decided to throw me under an imaginery bus.
Lesson learned....don't