Yes, this is true and is a good method to check for expected spike levels. Since internal wastegate ports are soo small they cannot possibly bypass all the exhaust gasses from hitting the turbine, 2 to 6 psi isn't unreasonable, but it will be proportionate RPM and you'll probably only noticed the maximum psi at full throttle in the upper rpm. How much boost yours will generate is hard to say cause every application reacts a littel differently.TRDemon said:is it true that if a turbo wastegate is open the turbo still produce boost? if so how much so. For example i have a T28 turbo with a internal wastegate do u feel if the wastegate is constantly open do you feel it would still boost and if so how much?
You can overboost...and i dout my can push that much gases to hurt the turbo.
Well... it depends greatly on flow, not likely, but still possible.Its a Garret T28, these turbos are found on 1800cc - 2000cc engines and i'm using it on a 1600cc engine, you do the math!!
They're big enough, you could basically run your car wiht 0.0bar boost if you kept the wastegate fully open all the time, your turbine wouldnt really spool that well, because exhaust gasses have a way of taking the easy route outSince internal wastegate ports are soo small they cannot possibly bypass all the exhaust gasses from hitting the turbine
Then explain to me why I can take a turbo from a 2.3L engine, bolt it up to a 1.6 4age on a custom manifold, wire the wastegate full open and still make 6 psi at 7000 RPM?Flashmn said:They're big enough,.....
TRDemon said:flashmn thats money i don't have. so i'll have to do it some other way
My question is: why would you want to wire the wastegate permanently open? Wouldnt this bypass a large amount of the exhaust gas away from the turbine and therfore, majorly defeat the purpose of having the turbo there in the first place? 6psi at 7000rpm on a 4age....thats kinda sad with a T28 turbo... :thumbdownneil85AE86 said:Then explain to me why I can take a turbo from a 2.3L engine, bolt it up to a 1.6 4age on a custom manifold, wire the wastegate full open and still make 6 psi at 7000 RPM?