Question about wastgates???
Question about wastgates??? I have a Tail 46mm my buddy was telling me that after a certain amount of boost i was gonna get boost creep cause the wastegate is to small...about how much psi can i run through that thing or how much HP do you think it will support before i need to go bigger?
Thanks
~Tom
Thanks
~Tom
Originally Posted by BlackCamaroSS02
I have a Tail 46mm my buddy was telling me that after a certain amount of boost i was gonna get boost creep cause the wastegate is to small...about how much psi can i run through that thing or how much HP do you think it will support before i need to go bigger?
Thanks
~Tom
Thanks
~Tom
In summary, normally too small a gate wont prevent you from running high boost, but it can hurt you by not sustaining low boost. Of course, turbo size, gate size, etc. will play a role in how it all works.
This is my understanding how it works.
Gate creep is the serious issue here... are smaller gates more prone to gate creep at higher boost levels??
Originally Posted by RealQuick
Basically, the way the wastegate works, if you want to run high boost numbers the WG does not need to bleed off that much air. This means a small wastegate can be used . Now if you run a big turbo and want to run low boost like 6psi (for example), then the wastegate needs to open and bleed off a ton of airflow. Thats where you'll get the boost creep if the gate is too small. It may creep up from 6 to 8 or something (just throwing examples out) because it cant expel all that volume of air quick enough. A 46mm will be plenty big enough for 900+hp. I bought a 42mm Racegate and that should support 800+hp.
In summary, normally too small a gate wont prevent you from running high boost, but it can hurt you by not sustaining low boost. Of course, turbo size, gate size, etc. will play a role in how it all works.
This is my understanding how it works.
In summary, normally too small a gate wont prevent you from running high boost, but it can hurt you by not sustaining low boost. Of course, turbo size, gate size, etc. will play a role in how it all works.
This is my understanding how it works.
FastKat, at higher boost levels typically a smaller gate is fine. The problem is running a big turbo at low boost with a small wastegate. Now as for what each wastegate can handle, only testing will show. We tested 38mm wastegates and they are certainly not created equal.
Jose
Jose
Originally Posted by BlackCamaroSS02
ok well how about running a garret T72 ball baring turbo with a 46mm Tail wastegate at like 6-8psi for a bit untill i get the motor?
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Yes... running a large turbo at low boost is more likely to overboost the turbo as the wastegate will not be able to vent off sufficient exhaust...
So wastegate size is not related to wastegate creep?
So wastegate size is not related to wastegate creep?
Originally Posted by JZ 97 SS 1500
FastKat, at higher boost levels typically a smaller gate is fine. The problem is running a big turbo at low boost with a small wastegate. Now as for what each wastegate can handle, only testing will show. We tested 38mm wastegates and they are certainly not created equal.
Jose
Jose
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Originally Posted by FastKat
Yes... running a large turbo at low boost is more likely to overboost the turbo as the wastegate will not be able to vent off sufficient exhaust...
So wastegate size is not related to wastegate creep?
So wastegate size is not related to wastegate creep?
OOOOOOHHHH my bad! I thought wastegate creep was the gate opening before it was supposed to... ie the gate starts to crack open a little at 8psi when it is set not to open until 10psi.
Originally Posted by RealQuick
You answered your own question. Overboosting the turbo (or seeing more psi then the gate is set for) shows creep. This happens because the gate is too small. So size of gate = direct effect on creep.
