Heat will not crack the stock Hyper pistons... Detonation does. Grab a set of 78cc combustion chamber AFR heads, slap them on the stock shortblock and I bet the pistons will live a long happy life. The lower compression due to these heads will give a safety cushion in the tune. FWIW many stock turbo cars run hyper pistons. 10.5:1 is just to high for forced induction, detonation does usually happen to all but those with the best of tunes, thats why all those 8 psi blower cars are, well.... Blowing

It isn't the Hyper's fault... It's the car owners (and I'm one of them)

Bill

 

What was ambient temp at the time of that run?

 

I dont know the ambient temp, but if it helps, the turbo outlet temp was 175 and the intake temp was 115. At 8psi the turbo outlet temp was 225 and with the meth, intake temp was 70 degrees.

 

I meant what were the IATs at high boost levels without methanol, or has anyone had the ***** to try it. I dont want to have to run methanol just to be able to run boost levels that any other kit doesnt require methanol to run.

 

keep in mind, we dont run an intercooler. To run higher boost, you need to do something to cool the charge temps. I had the 8psi with meth on my LS1, but changed my mind with stock fuel system and pistons. I would not run the 8psi w/o meth. The thinking behind these systems is outside of the box, but I personally am very satisfied. Check out the FAQ's on www.ststurbo.com

 

could you use an intercooler insted of meth?

 

Yes, you could use and intercooler. I just sold an kit to someone with an Augostino turbo motor. He is using a t-70. Should make great power.
It would just be a matter of fabbing up a pipe to go to the intercooler, then from the intercooler to t.b.

 

So no times on these w/out any other mods?

 

some are running low and mid 12's, but with great mph- 117 to 120 with street tires and high 60ft times.

 

Has anyone measured the lag time on the STS kit vs. a standard turbo setup? Seems like a real long trip for the boosted air to travel. What about pressure drop measurements from turbo outlet to intake manifold?

 

All of this info can be seen on www.ststurbo.com

 

I thought alot of the STS guys were seeing full boost by 3500 rpm. It has the same characteristice of my kit, but I'm turning 2 turbo's. When the boost finally does hit... hold on

 

My car hits full boost at 3000. In first, its almost useless; just spins when it hits boost. I usually short shift 1st a little. In second, on all but good pavement, it spins more; just back pedal a little and go.

 

Would this be useless w/ a auto?

 

I rode in an auto & a six speed before deciding to make my purchase. 6 speed is a LOT of fun, but that auto will probably always beat it at the track because it's easier to get a great launch and you don't lose boost during shifts. If they had a kit for my auto vette, I'd be signing up for it. I keep telling Rick to find some time to get a vette kit together.