The Monsterbox 4 Rotor
10-23-17, 04:30 PM
#1315
Couple shots of the interior after being detailed, showing the placement of the water/meth tank. Now we just need to build a lexan firewall between the surgetank/trunk area and the seats. Meth tank will be fine as only running water and/or really low meth content.
The immediate things are: swap the turbine hotside, stiffer wastegate springs, and install the meth nozzle, and install the sequential shifter. Then we get on the dyno and retune!
Might have to hold off on these items if I decide to make it to the 4 rotor meet at Mazmart.
10-23-17, 09:12 PM
#1317
Persona non grata
10-26-17, 02:11 PM
#1318
Water injection completed,
Now onto fixing the wastegate flutter sound that annoys me.
Wonder if I can wire an HKS Stepper Motor valve into the DPO from haltech and control it
Why is it that no one makes a stepper motor besides HKS for boost control. It just makes too much sense.
Now onto fixing the wastegate flutter sound that annoys me.
Wonder if I can wire an HKS Stepper Motor valve into the DPO from haltech and control it
Why is it that no one makes a stepper motor besides HKS for boost control. It just makes too much sense.
10-27-17, 10:44 AM
#1319
If its the sound only and no functional issue, then you should just get a muffler. Say, off something like a Banshee 4 wheeler. I use a muffler off a lawn tractor with a motorcycle K&N filter at the end to quiet the sound of my BAC valve, which otherwise has an annoying rat-ta-tat-tat sound.
Last edited by Monsterbox; 10-27-17 at 10:47 AM.
10-30-17, 12:04 PM
#1322
Swapped to 1.32AR housing from the 1.58, and installed 12psi springs. Running direct mechanical pressure of compressor outlet to lower wastegate ports, top port vented, no boost controller.
Car lights up the tires 12.5-13.1psi peak in 4th gear at 4k rpms, hit full boost with as little at 50% throttle now. Boost holds around 12psi to 6500rpm, then gradually tapers across 6500-8500rpm down to around 8.5-9psi. So we have about a 3psi taper, which is around a 25-30% taper. I'm assuming this is exhaust back pressure opening the gates and/or the engine VE increase at high rpm taking in more CFM. The greatest news of all of this is NO FLUTTER SOUND. Its sounds absolutely amazing clear F1 + boost + open wastegate sound. Its just nuts. You should see the cars around us on the interstate. They literally all have heart attacks and slam on the brakes. I feel like such an a**hole, its amazing.
So now, to figure out how to hook up a boost controller so that we can offset the taper by closing up the gates at higher rpm. Going to try the 3-port, without interrupting the lower port line. I assume around 70% peak duty and the bottom of the taper should bring that 9psi up to 15-16psi where we want it. However, if I get that frequency pulse sound through the hood tubes, going to buy the HKS EVC6 which is a stepper motor. Stepper won't have a frequency operation in duty cycles, but instead will function exactly as a manual bleed valve that has electronic adjust ability. I'm still not sure why there is not an aftermarket stepper device thats universal and can be wired into the ECU.....anyway, going to wire in the 3 port, try it to see if we can get good power/clean curve, then swap to the HKS if that causes unfavorable sound. Still need to turn on the methanol.
Oil pressure, water, oil temp, battery voltage (holding 16.5 in boost!), fuel pressure (holding 1:1), all looks f*cking dope.
The only issue i'm having right now is randomly I went to grab third, and trans stayed in 2nd, and then locked my shifter into neutral. Had to drop pan and push the slider to reset it. Not sure why this occurred. I talked to the gear company he says we should get stronger detent springs for the shift rods. I can't decide if maybe it was my fault or the trans fault, either trying to find custom spring manufacture to make some tiny springs at higher rate just to be safe.
Car lights up the tires 12.5-13.1psi peak in 4th gear at 4k rpms, hit full boost with as little at 50% throttle now. Boost holds around 12psi to 6500rpm, then gradually tapers across 6500-8500rpm down to around 8.5-9psi. So we have about a 3psi taper, which is around a 25-30% taper. I'm assuming this is exhaust back pressure opening the gates and/or the engine VE increase at high rpm taking in more CFM. The greatest news of all of this is NO FLUTTER SOUND. Its sounds absolutely amazing clear F1 + boost + open wastegate sound. Its just nuts. You should see the cars around us on the interstate. They literally all have heart attacks and slam on the brakes. I feel like such an a**hole, its amazing.
So now, to figure out how to hook up a boost controller so that we can offset the taper by closing up the gates at higher rpm. Going to try the 3-port, without interrupting the lower port line. I assume around 70% peak duty and the bottom of the taper should bring that 9psi up to 15-16psi where we want it. However, if I get that frequency pulse sound through the hood tubes, going to buy the HKS EVC6 which is a stepper motor. Stepper won't have a frequency operation in duty cycles, but instead will function exactly as a manual bleed valve that has electronic adjust ability. I'm still not sure why there is not an aftermarket stepper device thats universal and can be wired into the ECU.....anyway, going to wire in the 3 port, try it to see if we can get good power/clean curve, then swap to the HKS if that causes unfavorable sound. Still need to turn on the methanol.
Oil pressure, water, oil temp, battery voltage (holding 16.5 in boost!), fuel pressure (holding 1:1), all looks f*cking dope.
The only issue i'm having right now is randomly I went to grab third, and trans stayed in 2nd, and then locked my shifter into neutral. Had to drop pan and push the slider to reset it. Not sure why this occurred. I talked to the gear company he says we should get stronger detent springs for the shift rods. I can't decide if maybe it was my fault or the trans fault, either trying to find custom spring manufacture to make some tiny springs at higher rate just to be safe.
