I was just wondering if i really need a external waste gate. I wanna run about 6 psi with a te04h. any idea what the stock spring is? thanks
stick with the internal wastegate… save your money and buy a real turbo…
it is a real turbo…what the hell are you talking about…could i run 6 psi with the stock spring on this turbo?
he was sayin that turbo is VERY small…
It depends what it came off of. 6psi with that turbo is safe. shit, with that small of a turbo 10-15psi is very safe on a stock block. that is with proper Fuel Management. :sleep:
Really? i thought psi is psi no matter what turbo. but im just looking for something that will spool up fast.BY the way does anyone know where to find a website where i can buy a te04h downpipe…or downpipe flange for that matter
he was sayin that turbo is VERY small…
yes im saying its WAY to small for a B18A…
the turbo on the far left is very similar to one i used on my old B18A and that is bigger than the TE04H, at 10psi it made 216whp and like 226fttq. power bad seriously fell off before redline, so was not a fun turbo setup… the third turbo (from the left) is a 50trim T3/T04E which is the size of turbo that a DRAG kit comes with i believe, that would be a great turbo for your car…
Really? i thought psi is psi no matter what turbo.
umm…think of it like this: you have 15psi of water flowing threw a drinking straw <-TE04H now you have 15psi of water flowing threw a fire hose <- 60 trim T3/T04E (turbo far right in pic)… how which one has more volume?
tell me if i’m wrong…
say we have 2 engine with the same intake manifold & trottle body size. 15 psi inside this manifold will be the same amount of air with a big/small turbo.
if the engine would suck all the air and needs more, you would not be able to acheive the 15 psi pressure…
15psi is just the pressure the turbo is operating at, the bigger turbo will move more air per minute, verses the smaller turbo. more air/fuel = more power…
:giggle: having a small turbo with 8 psi, compared to a larger turbo, with 8 psi, the larger turbo will produce more power. the reason is because you can move more shit through the bigger turbo. who is going to take a bigger shit, a 2 year old or a 22 year old? look at it that way.
Yeah, its not as if the IM/TB/Engine can hold more air. 15psi=15psi, right?
You guys are implying that w/ a bigger turbo your engine can hold more volume at the same psi which isn’t correct…
yes 15psi is 15psi but 15psi on a 14b lets say is less then 15psi on a big sc61 because the actual amount of air it can flow (flow rate) is much greater in the sc61 so it can displace a larger volume of air which is usually rated in m^3/min where as psi is pressure lbs/in^2
hum, say we are at 8 psi. Each crank of the engine will take the same amount of air (1.8L at 8 psi), this does not depend on the turbo.
But at high rpm, engine crank are more frequent and then the 8 psi air can not be refilled with a small turbo, and then if the engine is lacking of air, it will decrease the pressure, below 8 psi.
conclusion , bigger turbo are for high reving and high pressure application… if your setup holp a certain pressure until 6500 rpm your turbo is sufficient and a bigger one would be useless.
GT28R = Compressor Flow: 31 LB/MIN
GT35R = compressor flow: 65 LB/MIN
YES, 15psi is still 15psi no matter what turbo you run, its a pressure rating. CFM is a measure of volume, and no realtion to PSI. the the GT35R above will flow twice as much air as the GT28R, there for has the capablity of producing twice as much horsepower at the same PSI rating.
that is if the engine can hold the full volume of air, correct? I think me and whiteteg are saying the same thing…
well think about how fast the engine is spinning, how much air it needs to suck in every revlution… thats where the CFM is coming into play. the bigger GT35R has the ablility to refill the chargepipes/intake manifold/cylinders faster than the smaller turbo (GT28R) would be able to…
that make sence?
yeah that makes sense, but we were talking about 8psi
Say you have 2 identical engines, one with a small turbo, and one with a large turbo, pushing 8 psi. If they both hold 8 psi to redline, which one makes more power? The answer relies on the efficiency/flow characteristics of the turbo. Generally speaking, a smaller turbo will fall out of its efficiency range toward redline, and heat up the pressurized air more than the larger turbo, which more than likely is right in the sweet spot in the upper rpms. This extra heat reduces the effective volume of air, reducing the total power output. 8 psi is still 8 psi, but hotter air makes less power. Make sense?
then we’re saying that even if both big/small turbo holds the same pressure AND cfm for 7000rpm, the smaller one will produce more heat by spinning way faster and of course… heat is your worst ennemy here.
HAha
very good, now maybe the idiots will understand now.