Goodbye Torqstorm, hello Spoolius Ceasar

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Some Youtube video's... made some longer ones, just playing around. Maybe one of these days i'll have enough subscribers and have an excuse to goto the NoNameNationals, I think that would be a blast. Long drive though.


 
These wastegates are driving me nuts. They come with 2 springs. Supposedly one is 4.6psi and the other is 5.4psi and should be about 10psi combined with a crack pressure of around 8psi according to the paperwork. I figure they aren't going to be exact. But they seemed to make a bit more boost than advertised at first. about 6.5psi on gate only. Then I went to a test n tune, boost controller off. Launched on 2 step pulled pretty good but felt N/a (11 sec engine at 6500+ft da n/a) which is basically what it ran. I check my data log 0-1.5psi of boost w t f.
First run was a botch ran a mid 7 1/8 mile then the throttle cable came apart. Second run I fixed it and wanted to make sure that I wasn't dreaming and sure as hell, 0-2psi.. . As the car slowed down I heard it, one of the wastegates was stuck open, found it was so close to a support that when the engine torqued it put just enough pressure on the cap of the piston housing of the wastegate that it flexed just enough to hold it open. Got the car home and made a little notch to give it some space. Made sure everything was smooth and not binding up, put the small spring in and made 3.4psi on gate, 100% duty cycle was about 7psi. Put the big spring in made 4.5psi 65% duty cycle was about 7psi. I just put in BOTH springs you would think it would make about 8psi... it made 5 on gate only. I'm ok with it, but damn, I'm not sure I want to run compressed air or c02 yet. lol
 
Sounds like you either have significant hot or cold side leaks or you have a lot of drive pressure forcing the gate open. On gate pressure does the boost curve fall the higher you rev it? Also. You could unhook the reference on the bottom of the gate and see what it makes. My old stuff would make like 3psi with the reference hooked up and 9 or 11 with the reference removed and only exhaust pressure opening the gate.
 
Turbosmblk said:
Sounds like you either have significant hot or cold side leaks or you have a lot of drive pressure forcing the gate open. On gate pressure does the boost curve fall the higher you rev it? Also. You could unhook the reference on the bottom of the gate and see what it makes. My old stuff would make like 3psi with the reference hooked up and 9 or 11 with the reference removed and only exhaust pressure opening the gate.
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It holds steady, boost doesn't drop. I'm starting to think that maybe it was messed up and fixing where the bottom gate was hitting allowed everything to work properly and this is just normal. The exhaust is 2 1/2" merged to a single 3" vband to t4 1.25ar with a 4" downpipe, 2 50mm piston style wastegates it's possible it has some good exhaust pressure it is a 408ci with a healthy cam. It seems to be following the boost controller properly.. 3.4 psi gate @ 100% made 6.8-7psi. At least it's not running away with boost anymore.

Screenshot 2025-05-07 210311.png
 
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Are you using a 3 or 4 port MAC valve? Going to a 4 port would extend your range as far as duty cycle goes without having to install CO2 or compressed air.
 
Turbosmblk said:
Are you using a 3 or 4 port MAC valve? Going to a 4 port would extend your range as far as duty cycle goes without having to install CO2 or compressed air.
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3 port. I'll check into the 4 port setup.

I was looking into a compressed air setup that way I didn't have to get c02 bottles filled, just more weight and draw on the electrical system. But ultimately I'm not sure if I'll be going much over 10psi until more safety equipment is added to the car.
 
Toluene56 said:
3 port. I'll check into the 4 port setup.

I was looking into a compressed air setup that way I didn't have to get c02 bottles filled, just more weight and draw on the electrical system. But ultimately I'm not sure if I'll be going much over 10psi until more safety equipment is added to the car.
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I run a 4 port and at like 30% duty cycle I had more than doubled my base spring pressure. Don’t be afraid to look into using paintball tanks with a regulator as well. Lighter/cheaper than co2 and pressure is pressure. I know some grudge racers that go this route because it’s 4lb lighter than a co2 setup and they’ve had great results
 
Or just order a 10 pound spring for the gate?
 
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