fastcougar
CEG'er
Umm ... I'm pretty sure you mean "Compressor Stall", not surge. With the air backing up between the TB and compressor, the compressor wheel would start to slow and stall no?
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fastcougar
CEG'er
Nevermind, the term stall & surge is pretty interchangable with it comes to turbo's ... I never knew this. Technically speaking though, there is a difference between the two, but for laymen like us, the terms mean the same thing.
yeah its kind of weird, but now that we have cluttered up the GB thread, i think this is where i will drop it...
00TourSVT
CEG'er
great work guys, i am sure i speak for most when i say it is greatly appreciated.
sure, you could probably get by without a BOV/Dump valve on minimal boost applications, but not very smart at all! whether they are set to dump to atmoshpere or recirculated has almost nothing to do with the amount of boost being produced, it depends on your MAF placement whether it is draw-thru or blow-thru. you can't dump metered air to the atmosphere (without compensating elsewhere). that is why the setup will be recirculated because it is a draw-thru system.
on a second note, the wastegate is rarely "heard", unless it is diverting to the atmosphere, because most of the time it is just diverted back into the exhaust down stream.
sure, you could probably get by without a BOV/Dump valve on minimal boost applications, but not very smart at all! whether they are set to dump to atmoshpere or recirculated has almost nothing to do with the amount of boost being produced, it depends on your MAF placement whether it is draw-thru or blow-thru. you can't dump metered air to the atmosphere (without compensating elsewhere). that is why the setup will be recirculated because it is a draw-thru system.
on a second note, the wastegate is rarely "heard", unless it is diverting to the atmosphere, because most of the time it is just diverted back into the exhaust down stream.
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fastcougar
CEG'er
Wrong, his BOV is vented to atmosphere ... the tuning handles this
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contour2gq
CEG'er
Well lets see....I never new you herd a blowoff valve when you are stoping at a stop light. And a vac leak? The blowoff valve makes a loud poping sound when you change gears or let off the gas same thing from the pressure blowing into the atmosphiere instead of coming back through ur turbo. So usless idts. And I never new you could hear a wastegate opening. Ive had turbo cars and never new that. Thats a new one for me. Unless ur refurring to the sound of the turbo it self spooling? And yes its intimidating when you see a car you want to race and then hear that blowoff valve. Cause then you know it might be a serious ride
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00TourSVT
CEG'er
Wrong, his BOV is vented to atmosphere ... the tuning handles this
hmmm, maybe i need to look at the pics again.
well, honestly not trying to be smartass here, but i would like to know how it is taken care of in the tuning.....how is it compensated for? i have built and tuned 2 FI cars and have never had to deal with this since they have both been blow-thru systems.
fastcougar
CEG'er
Tom will no doubt chime in on this, but a BOV in a draw-thru system can compensate for venting to atmosphere by adjusting fuel/timing based on throttle position. Hell, you could even have Tom tune it so that when you jump off the throttle, no correction is taken and the mixture runs pig rich and you get flames out the exhaust ... all the ricer boys will come up and ask how you did it
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Seriously....they are 2 different things. They have different purposes...why would you ever compare them? What you sound like is, that you don't know much about a turbo system's/kit's pieces and what they do. You can have both sounds on a car.
00TourSVT
CEG'er
Hell, you could even have Tom tune it so that when you jump off the throttle, no correction is taken and the mixture runs pig rich and you get flames out the exhaust ... all the ricer boys will come up and ask how you did it
LOL, yeah maybe i'll look into that. This definatley would be the most expensive way of getting tailpipe flames i've ever seen in my life!
BrandonSVT99
CEG'er
BrandonSVT99 BUT ANYWAYS ENOUGH OF THIS LETS STAY POSITIVE AND ON SUBJECT ON THIS SWEET TURBO KIT THAT JOEY AND TOM ARE CREATING!![/QUOTE said:I stopped the argument and some people seem to want to fill this GB thread up with arguments.To whoever said I sound like I don't know what I'm talking about,I'm still learning and expanding my car knowledge,and I take in all the info I can get.In the begining I just simply stated that I don't like BOV,I use to but they got rather old after a while.
And thanxs FastCougar for some good info
BrandonSVT99
CEG'er
http://videos.streetfire.net/search/wastegates/0/ccea9749-89a4-44a3-8b5f-98a3003b930d.htm Wastegates and then if you listen closely you can hear the BOV.I'll admit that its a crappy video but hopefully you'll hear them and get my point.I'll work one finding a better video with a clean soundtrack.
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beyondloadedSE
Hard-core CEG'er
I like the sound of both, but i wouldnt go as far as to say that BOVs sound gay. Some sound really nice in my opinion.
warmonger
Hard-core CEG'er
Look, after analyzing the dyno data we have found that the torque data conversion was wrong in the software.
The guy running the dyno did not get good RPM data which is needed to convert the torque numbers from the HP numbers.
The dyno measures the HP and speed of the car, or RPM of the engine. It needs to back-calculate the Torque from the HP numbers.
Take a look at the graph and you will see that the torque and horsepower curves do not cross at 5250. This is only due to the conversion issue I described above.
I plotted the horsepower numbers into excel and I made a correct conversion for torque.
Peak torque on the 237wHP run was about 259 wTQ
I'm down here in Louisiana and visiting Joey and helping a bit with details on the car. We caught the error from the dyno and we wanted to be honest and straightforward about the corrections.
When I get back home I'll be able to do a screenshot of the excel graph and you will see the corrected hp/tq lines.
Thanks for the understanding.
Also more news:
We ran the car at the drag strip just to get an idea of what it might run. We ran into some Air Fuel issues and had to shut it down in 3rd gear because EGTs got high and the warning light came on.
This happened because we installed the 24#/hr injectors and we don't have it fine tuned yet. My tuning software is at home on my PC so I made a guesstimate tune and brought it withme to load into the car. When I get back home I'll adjust the tune and then we'll see what it runs.
For now, at 3.5psi the car ran 14.6@91mph in the 1/4, with a 2.2 60' and cutting out of the throttle at the top of 3rd gear. So I basically coasted over the line in 4th gear. We do have a timeslip to verify our times.
I'm guessing this car will be able to run about a 14.4 at 94-95 at just 3.5psi, and about a 13.9-14.1@100 with just 6psi.
We are extremely happy with the nice smooth torque curve for this car and the usable performance.
imho no matter how you look at it those are still impressive numbers for the amount of time spent on the project
great job, this is going to be one top notch product when complete
great job, this is going to be one top notch product when complete
contour2gq
CEG'er
Im just curious are yall dynotuning it or are you putting a tune in and then doing some data logging and adjusting the tune?
LilCe98
Hard-core CEG'er
The numbers are looking very impressive guys. Great work. I can't help but wonder if with all this added power under the hood would it be a good idea to upgrade the stopping power as well? Right now i'm running cross drilled and slotted rotors with OEM pads. Is this enough? Should i upgrade? Is this a topic for another thread? :shrug:
TRicker
Hard-core CEG'er
good job guys. i'm going to ask a question but please everyone dont jump on my back im not looking for a different DEAL here or anything, just asking here.
if someone buys this kit, and doesnt want a front mount intercooler, and wants a bigger turbo, do you have these types of options? or are all the kits going to have the same turbo included, and the same intercooler? im just thinking personally if i bought a turbo kit i would want a water/air intercooler and a nice big snail..... what would you be able to set up for someone looking for a little more?
if someone buys this kit, and doesnt want a front mount intercooler, and wants a bigger turbo, do you have these types of options? or are all the kits going to have the same turbo included, and the same intercooler? im just thinking personally if i bought a turbo kit i would want a water/air intercooler and a nice big snail..... what would you be able to set up for someone looking for a little more?
wouldn't be a bad idea ... I myself just got a warmonger brake kit from someone who ended up not using it, its still in the original packaging
A stage 2 and stage 3 lvl kits will be made later on. As stated in previous posts in here. What they will be planing to do has not been dicussed.I know the stage 2 was mentioned to have msds headers in that kit. I believe their main focus right now, is getting this kit up and running and then upgrading it from there.
Your not having a change of heart here and wanting to buy one are you trick??
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