Zombie's "Quick Spool" valve testing with pics and nerd like graphs
It passes smog easily......thanks to obd 2........ The oem pcm thinks its doing its job. It only has a z06 cam in it, so it would probably still pass, even if it was tested at the pipe. At idle and 2500 its just a low compression ls1 with a zo6 cam.
That's some pretty good handy work on the turbo set-up. Wish I could have been there with the install.
I'm glad you like the turbo flange!
Let me introduce myself
My name is Gary and I've been helping Richard(performmetalworks) with the machining side of things. Richard had a great idea and BAM, in one day we machined one.The intended cost was $400 for the flange and I beleived we could still have a market at that cost, but I said no! We can make this cheaper and out of 304 stainless. So the prices came out at $160 SHIPPED for the non-actuator flange and $260 for the actuator flange. One of the competiters spotted us on ebay and claimed to have a patent on the flange and actually threten us with a lawsuit
Mostly because they were charging $800 for a much prettier flange. As of right now we are developing a new kind of way to actuate the butterfly. Just 2 days ago we were completly trying to destroy the new prototype with heat. I guess this would be a good time to ask. About what kind of heat temp would be hovering around the flange when assembled? 800* ?Anyone with Q can PM me and I will try to answer the best I can. Performmetalworks is out racing for the weekend and I'm trying to fill in.
As of right now, this site is the only site with this much data info from the feild(so to speak) and to top it off,..........It's a rear mount.
Thanks guys
Great to see some feedback on the flange!!!
The idea is to raise backpressure, but only until the turbo starts making boost, so your right, the open valve eliviates that condition. While the valve is closed, the back pressure is raised, while exhuast gas flow is low, and the pressure on the exhuast wheel is low. The valve while closed causes more pressure on the exhuast wheel, to increase wheel speed sooner and make boost sooner.
Ideally, there could be a desired valve oreintation depending on system design etc. It the "real" world I doubt it could even be measured acurately enough to prove it though.
Before anyone jumps on me for "bad times", the track was absolutely horrible. I tried my first pass at 15psi and that was the 10.6 @ 131 and I had trouble keeping it in the groove up to the 1000' mark. Second pass was at the same boost with a soft launch again and I actually had to abort the pass around the 330' mark because it came out of the groove and went towards the center line. After that experience I turned the boost down to 13psi. It still required me to drive the car (usually it's a relaxing uneventful ride to low 10.x passes) and clicked off the best of 10.55 @ 131. I was hazing the tires through the entire pass even on the lower boost.
I played with the car from some 60-70 mph rolls on the way home from the track (terrifying my GF who was riding shotgun) and the street hooked up MUCH better. Was able to make pulls at 17psi and I think I'm going to be able to squeek 18psi out of this WG spring. Track is open on Sunday again and I plan on going. Since it is a test and tune there will be some track prep.
On another note this thing is an absolute animal on the street. It comes up on boost so fast and smooth it's amazing. I now love my car even more than I did before. I HIGHLY recommend using one of these valves on any street car, the results are absolutely amazing.
I'm also hoping to get some video of this spooling this weekend for everyone. The car is ridiculous to drive.
Last edited by Zombie; Mar 7, 2009 at 02:28 AM.
This is good news for all of we "spool deprived" turbo guys. I''m hoping the addition of a 2-step will at least get me a 10.xx, then go from there.
The Best V8 Stories One Small Block at Time
Zombie,any chance you could provide what vehicle that wastegate actuator was from?? thx,mike
twin scroll have basically 2 separate turbine housings build into 1, it has 2 volutes inside and when you block one off it basically cuts the A/R into half - effectively increasing velocity and backpressure and diverting all exhaust gas to lets just say " .63 A/R" instead of a full 1.36 A/R"


Good results tho Zombie glad to see everything is working nicely!
The good news is everything is made of stainless which doesn't have the greatest thermal conductivity.
twin scroll have basically 2 separate turbine housings build into 1, it has 2 volutes inside and when you block one off it basically cuts the A/R into half - effectively increasing velocity and backpressure and diverting all exhaust gas to lets just say " .63 A/R" instead of a full 1.36 A/R"
Last edited by mcx; Mar 7, 2009 at 03:40 PM.
That's some pretty good handy work on the turbo set-up. Wish I could have been there with the install.
I'm glad you like the turbo flange!
Let me introduce myself
My name is Gary and I've been helping Richard(performmetalworks) with the machining side of things. Richard had a great idea and BAM, in one day we machined one.The intended cost was $400 for the flange and I beleived we could still have a market at that cost, but I said no! We can make this cheaper and out of 304 stainless. So the prices came out at $160 SHIPPED for the non-actuator flange and $260 for the actuator flange. One of the competiters spotted us on ebay and claimed to have a patent on the flange and actually threten us with a lawsuit
Mostly because they were charging $800 for a much prettier flange. As of right now we are developing a new kind of way to actuate the butterfly. Just 2 days ago we were completly trying to destroy the new prototype with heat. I guess this would be a good time to ask. About what kind of heat temp would be hovering around the flange when assembled? 800* ?Anyone with Q can PM me and I will try to answer the best I can. Performmetalworks is out racing for the weekend and I'm trying to fill in.
As of right now, this site is the only site with this much data info from the feild(so to speak) and to top it off,..........It's a rear mount.
Thanks guys
Great to see some feedback on the flange!!!
Nice product you have hope you decide to stick and around decide to sponsor our board so our members can enjoy your product openly.
J
It's a real bummer, I wanted to see how the car could do with track prep





