AWDisuzu said:
hey Mike! thinking about gettin real drunk tonight and turning up from 6 psi to twenty, whatch think?
STS Turbo questions
- Thread starter LitemUp
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hey Mike! thinking about gettin real drunk tonight and turning up from 6 psi to twenty, whatch think?
AWDisuzu
Full Access Member
with race gas, and some stronger rods, you should be set! that would make 1200 hp
AWDisuzu said:
I dont think I could get them in tonight, hell lets just boost her
AWDisuzu said:
I don't think the problem is just the boost. I have racked my brain on this thing. First we had the overboost problem. That has been fixed. Second we had the fact that STS-1E (mini VEC2) went out with no program loaded with caused a lean out. Now the problem is the fuel management. The controller that comes with the current system (If is still comes with it) only controlls the the 4 extra injectors. So there is no way to meter the fuel to a specific cylinder. Since the #3 seems to run hotter then the others it is the first one to fail due to lean out. Dropping the extra injectors and going with larger ones in place of the stock ones will greatly benifit this system. Along with Meth and a VEC3 to control it all. I mean after all boost is boost right? Hell I don't know. Forced air coming in should be the same right? So if there is an issue then it either has to be the amount of air, temp of the air or the amount of fuel mixed with the air. I believe my engine is still surving because of the amount of fuel I'm sending to the cylinders. I believe that is the only thing that has saved me. So if anyone thinking of the STS kit go ahead and add larger injectors, meth kit and a VEC3 to your list. I do know that STS realized that there was a problem with the fuel and tried to correct it. I do believe that is why the price of the kit dropped as they no longer sell the STS-1E. I'm not postive on that as it is still on their web page.
AWDisuzu
Full Access Member
i do that sometimes. when I feel like changing head gaskets for fun!
AWDisuzu
Full Access Member
supplemental injectors are a bad idea ALWAYS!
at the very least, use a FMU to increase the fuel pressure (in relation to boost) to over 100psi on stock injectors.
or, bigger injectors and standalone computer.
at the very least, use a FMU to increase the fuel pressure (in relation to boost) to over 100psi on stock injectors.
or, bigger injectors and standalone computer.
FlyingLow said:
yipBone said:
AWDisuzu said:
there was much discussion going on with Joe and I and Justin and Sean Roe after joe learned and wasnt prepared for my fmu and fuel pressure setup. He was worried initially about blowing off the fuel lines and that he'd have to increase the injectors, which would require quite a bit of work on a limited time to do it. I forget the details but he was able to disconnect some stuff on the split second box and tee into something in order to use the fmu, keeping the stock injectors in tact. sean roe had already come across this issue and had the answer to our questions within minutes. thanks again sean roe and joe.
Joe doesnt give up easily...thats good because early on it didnt look like he'd be able to do anything with the setup I had.
UNIBOY said:That is the best looking 14 second motor I've ever seen in my life.
why thank you kind sir
more to come very soon
UNIBOY said:That is the best looking 14 second motor I've ever seen in my life.
That's only because he had to stop at the 60' mark to change the rear tires
UNIBOY said:I hope to see it in person one day.
get your shiny hiny to the Nats bro!
you will bo you will
FlyingLow said:
The one thing you are forgetting is the back pressure and the additional heat that is retained in the engine as a result of that back pressure.
Silverback said:
When is the back pressure present? Those that lost an engine did so mostly during times when the turbo was making boost. Wouldn't the back pressure be very low under boost? When would the pressure be the highest? The heat that is retained could be reduced greatly with either Meth or an inter-cooler.
Dave T(BADVENM) said:
Isn't it great to have competent, concerned, and creative people in our hobby shop?!
FlyingLow said:
Sorry Scott, wrong on all counts.
With the STS, the back pressure is the greatest when it's under boost. It's the back pressure that is spinning the turbo, not the heat energy with normal turbo systems. During normal driving the turbo is pretty much a non issue. When the STS builds boost pressure the back pressure has to be greater than the boost pressure in order for it to generate boost.
The Methanol injection or an inter-cooler only cool the intake air temp. That has nothing to do with the heat build up in the cylinder when it's trying to overcome the back pressure.
Let me see if I can draw a parrallel for you. The helicopters you fly have turbojet engines right? So if you were to take and reduce the exhaust opening to 25% of what it is currently, what would happen? The restricted exhaust (back pressure) would cause heat to build up in the engine until such time that it is shut down or fails.
Now you have EGT's gauges on your helicopter to tell you when something is going wrong. Ever had it happen? For whatever reason those EGT's can spike in just a couple seconds. Same in your engine. Problem is you will not see it unless you have EGT probes in every exhaust port. Needless to say the cooling system will be to slow to react to show that you have a problem. By the time it does you have already lost an engine.
You could run pure methanol for fuel, and have an inter-cooler, and it would not do a damn bit of good with the STS system.
Begood
Full Access Member
I think the bottom line is, go Roe, or Paxton, but NOT STS!
Bill.
Bill.
Begood said:
if you want "only" 700hp
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