Turbocharging 101 - Wastegate Basics

Here we see what should not be done on an internal wastegate setup, which ultimately lead to the customers engine blowing from overboosting

Category:

Autos & Vehicles

Tags:

• no
• limit
• motorsport
• turbo
• wastegate

[kokis3]

idiot ffs are you supposed to be mechanic engineer or what??? the valve dont open more than 15 % else it will get the boost pressure too low..it cant open 100 % for some reason moron.. car manufacters arent stupid like you are... idiot car tuner / mechanic...

[NoLimitMotorsport]

@kokis3 right, we're the idiot tuner????? Do you have any idea how wastegates and turbos even work. the flapper doesnt even START OPENING until it reaches wastegate base pressure, so it doesnt matter if the flapper goes 90% or 10% or whatever, it stays shut. Once the engine makes wastegate spring pressure, then it opens up, whatever it needs, to bleed excess boost. So in this case, the welded flanges ontop of the factory O2 housing which caused it to barely open up and OVER BOOST. We fixed it.

[carswesty]

my car when i floor it from idle it's flat on power but as soon as i get to just over 3000rpm it takes off like a bullet!!! do u have any idea what could be wrong with it please?

[NoLimitMotorsport]

@carswesty If its a turbo car, its probably LAG.....

[Aerosmith145]

You say there's "no travel" and it's "completely blocked". I see the arm moving at LEAST .375" as you move it, with the "bad" 02 housing on. Most vehicles don't open nearly that much from the factory! That's more than sufficient! Look at the factory setup on a Ford-style 5-bolt factory internal wastegate. It only moves .375" before hitting a wall, maybe even less. Furthermore, the puck only cracks open as much as it needs to maintain a set boost level. It was prob fuel/knock that did it. Geez.

[NoLimitMotorsport]

@Aerosmith145 Thats where your wrong. These gates were suppose to be 14psi, and before doing the modification, boost was 30+psi. There was no relief whatsoever on the exhaust going thru the turbo and boost spiked. Sure enough, once we modified the flanges, boost went right to 14psi and we were able to raise it up using a controller.

[B3NALATOR]

@carswesty thats normal...

[bmfbbmfb]

@kokis3

wow your stupid

[MyStIcTrE3]

@NoLimitMotorsport

That's correct

[Ellisinho9]

Good video mate, people dont use their heads anymore. I just removed my turbos to find out they are Nismo items. Im doing an inspection now.

Also very nice GT-R I got a R32 :)

[LookieLoudLou]

Good video man. Thanks alot

[sergsrt8]

can u still use an internal wastegate after a turbo swap in an evo?

[Jlizel]

@kokis3 are you retarded? hahaha so you have 40psi of boost pressure and your running 7psi on your boost controller how is your wastegate going to expell 33psi within a split second? 100% wastegate actuator open. stop being a jackass youtube racer

[Jlizel]

thats why you never let shops touch your shit.

[Jlizel]

@RallyFanaticRich why would it matter? just more flow aka a bigger downpipe housing to release pressure faster anything past the wastegate has no effect whatsoever on spool thats why the turbo is divided by intake housing and exhaust housing it splits up the exhaust in 2 ways. 1st way the exhaust flow spools the turbo, 2nd way the other exhaust is expelled out and so on and so forth.

[85typet]

@theskatelate dont feel too bad it stands for Pounds Per Square Inch.