odishaw

k guys so i have a gt2871r turbo and im looking at the internal wastegate on the turbo and im trying to understand how adjusting it works.. if you undo the nut towards the wastegate it should increase the boost, but how does the bar move over back up to the nut? someone shed some light if possible.. thanks

boostedcivicsir

shorten the rod, more boost
lengthen the rod, less boost.

if you shorten the rod, the less the gate can open, thus making more boost.

odishaw

ok i understand how that works, but from what i see i just loosen the nut, but how do i get the sleeve thats covering the threads to get back up to the nut?

jonesEK

iTrader: (1)

TTT

darkvader0

USually have to remove the retaining clip that holds the rod to the flapper valve. Then the whole rod is threaded to you tighten it/loosen it by rotating the whole rod.

W!d3b0dYr3X

The nut locks the collar in place once adjusted. Loosen the nut then rotate the collar that attaches to the flapper 1-2 turns down to shorten the rod. Tighten the nut up. Take it for a ride if it needs more adjustment do it 1-2 turns at a time. When the rod is shortened it will require some muscle to pull it back up to the flapper to get it back on. This puts tension on the spring making it harder to open which gives u more boost.

wantboost

iTrader: (2)

or buy a boost controller. Sometimes you can over adjust the internal wastegate and damage the diaphragm and the spring

jdmb18b1flip

ok so to incress the boost on a internal wastgate turbo u just loosen the nut on the llil ord thing right,,,, do u need a spring ive been hearing about

jdmb18b1flip

and how much boopst can one usuelly push

xile6

If the wastegate isnt adjustable then you cant up or lower the boost.

On an adjustable one. You unlock the nut. Then turb the arm out to lower boost ( it will leave the wastegate flap open some).
Or turn it in to shorten the rod and pull more pressure on the flapper.

I run 9.5psi on a sr20 t25. They come factory at 7-8psi.

wantboost

iTrader: (2)

I ran 14 on my sr, torque city lol


If the wastegate arm doesn't have a threaded section, then it isn't adjustable.