Tapping s484 housing for WG boost reference?
Tapping s484 housing for WG boost reference? Are you guys jus drill n tapping the housing directly? Or is welding a 1/4" npt bung necessary?
Do s n Donts?
Im gunna run a -4an tee to plumb both my wastegates with ss AN lines. I have plenty of extra hose n sum fittings already. I figure than heat source and lines blowing off wont bevan issue...ever!
Do s n Donts?
Im gunna run a -4an tee to plumb both my wastegates with ss AN lines. I have plenty of extra hose n sum fittings already. I figure than heat source and lines blowing off wont bevan issue...ever!
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From: Iowa
I agree with Joe for 2 reasons. 1)the compressor housing is where you will see the most fluctuation in pressure.
2)there is virtually no head loss here. Even without an intercooler, there can be a drastic pressure drop between compressor and throttle blade. So you might show 21psi at the compressor but the engine is only really seeing 19.
If you do decide to tap the compressor directly, a good rule of thumb is about 1/2 diameter of the thread is how thick the tapped area should be. So if you have a 3/8 thread sensor, pick a spot in the compressor that is at least 3/16 thick. Just a rule of thumb tho
2)there is virtually no head loss here. Even without an intercooler, there can be a drastic pressure drop between compressor and throttle blade. So you might show 21psi at the compressor but the engine is only really seeing 19.
If you do decide to tap the compressor directly, a good rule of thumb is about 1/2 diameter of the thread is how thick the tapped area should be. So if you have a 3/8 thread sensor, pick a spot in the compressor that is at least 3/16 thick. Just a rule of thumb tho
Where would you guys pull wastegate pressure source from? Im still learning, read that wastegates arent meant to see vacuum. Post intercooler, but before TB? Before or after BOV?
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From: Norn Iron
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I was under the impression that this was the spot u would use if at all possible for the wastegate to be referenced from I could be wrong i guess but I did it this way based off how my tuner told me he would do it. Also when I'm having issues like before where the turbo wasn't making boost I just simply unplugged wastegate and hooked the gaige up instead to verify immediately it was indeed the turbo and not a boost leak or similar issue
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Verdad Gallardo I was under the impression that this was the spot u would use if at all possible for the wastegate to be referenced from I could be wrong i guess but I did it this way based off how my tuner told me he would do it. Also when I'm having issues like before where the turbo wasn't making boost I just simply unplugged wastegate and hooked the gaige up instead to verify immediately it was indeed the turbo and not a boost leak or similar issue
Your posts normally make sense, but the reality is that pressure drop happens in every system. You can try your best to lower the issue, but it is not a problem that can be "rectified". The compressor housing is not indicative of pressure readings at the intake manifold, which is what most people are concerned with. The only reason I would ever care about compressor housing readings is if I wanted pressure ratio numbers to analyze efficiency of my combo.
9 Second Club
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From: Norn Iron
Your posts normally make sense, but the reality is that pressure drop happens in every system. You can try your best to lower the issue, but it is not a problem that can be "rectified". The compressor housing is not indicative of pressure readings at the intake manifold, which is what most people are concerned with. The only reason I would ever care about compressor housing readings is if I wanted pressure ratio numbers to analyze efficiency of my combo.
And the pressure sourced used for boost control doesnt need to be indicative of intake manifold pressure....otherwise all those using CO2 or other external high pressure air sources would be fucked, as that has nothing to do with intake pressure
Excellent info here. Thanx fellas.
So as i originally asked, it should be ok to just tap n thread the housing (thickest part) for lets say a 1/4npt fitting?
Am i better off with a different size/thread pitch?
Im using -4an to feed both wastegates from this 1 source
So as i originally asked, it should be ok to just tap n thread the housing (thickest part) for lets say a 1/4npt fitting?
Am i better off with a different size/thread pitch?
Im using -4an to feed both wastegates from this 1 source
Ok, i havnt checked yet, but for sum reason i thought that was the size ports on WGs. Trying to keep em all the same/simple...even with teeing em together. If its 1/8" npt, would i be better off running -3 AN to them vs. -4AN?
