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50Sick
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Discussion Starter #1
Im interested to see if anyone is data logging boost at the turbo. If you are and would be willing to share loss if any between the turbo and final inlet to the throttle body. I am seeing a 10psi variation from the turbo to the throttle body. If this is normal is there a point where you can over spin a turbo trying to acheive a certain amount of boost.
 

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X2
Is it injected or blow thru?
 

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50Sick
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Discussion Starter #4
Fuel injected with an intercooler. I run two 3" tubes from the turbo merging into a 4". There is a good 6' of 4" back to the intercooler and then another 6' forward to the intake manifold.
 

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To me, 10 lbs of loss seems very high... but you also have alot fo IC piping. Is there anyway you could redo it to minimize the overall length of the tubing?
 

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Joe, i've seen about 5psi just in the tubes on a passenger seat area mounted twin setup, you might have a little more since yours is all the way back their at the end of the bus you drive, lol. 6' of 4" x 2, plus the 3" tubes = alot of tubing, plus whatever the cooler is dropping


also how hard are you spinning the turbos, they might be loosing efficiency and start dropping psi

Rob
 

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I've wondered how much the length of tubing plays on boost loss and how much time it takes to make X amount of boost.
 

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50Sick
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Discussion Starter #9
Joe, i've seen about 5psi just in the tubes on a passenger seat area mounted twin setup, you might have a little more since yours is all the way back their at the end of the bus you drive, lol. 6' of 4" x 2, plus the 3" tubes = alot of tubing, plus whatever the cooler is dropping


also how hard are you spinning the turbos, they might be loosing efficiency and start dropping psi

Rob
Robert,

I was waiting for that one. Its a short bus. By the way can you send me some stickers. The new fuel cell rocked.

Joe
 

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50Sick
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Discussion Starter #10
Make sure you pressure test the whole system throttle body to turbo outlet. Frozen boost has couplers you can buy. I use a leakdown tester on mine. Pressure leaks kill turbos!
Do you have a picture of these couplers? Is it worth making my own or just buying them?
 

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Do you have a picture of these couplers? Is it worth making my own or just buying them?
They are 29 bucks and basically a silicone coupler, 2 t bolts and a cap for one end.
 

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Often can be made with a silicone coupler, pipe cap from Home Depot, and some air fittings. Just be careful if that shit comes flying off, there's a lot of energy there.

At first 10psi seems high although I'd almost bet it's not uncommon either, especially if your I/C is mounted in the back seat. How big of a core are you using?
 

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50Sick
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Discussion Starter #13
Often can be made with a silicone coupler, pipe cap from Home Depot, and some air fittings. Just be careful if that shit comes flying off, there's a lot of energy there.

At first 10psi seems high although I'd almost bet it's not uncommon either, especially if your I/C is mounted in the back seat. How big of a core are you using?
Its a Chiseled 4000 model.
 

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Have you calibrated the sensors or switched the sensors to see if there is a difference. If one reads high and one reads low you could see a big difference.
 

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Pressure testing seems like a great idea and I want to do it to my system but I am a little confused. Looking at the description on the frozenboost website it says to use the tester at the turbo inlet but the tester diameter only goes to 4".. Also if you pressure test it on the inlet of the turbo is it possible to damage compressor wheel with say 32 psi ?? or am I over thinking this?
 

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i will be as my anderson pms and interacq allows me upto 8 custom sensors and so far i've added egts, a wideband, fuel pressure (helped me diagnose a faulty afpr) and i have a pressure sensor whcih i plan to install at the turbo
 
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