Brocker

iTrader: (1)

Im driving a GT3076R with .63 exhaust housing. I want to drive it with round 1,5 - 1,6 Bar of boost.. But evertime i rev 5.000 rpm or higher the turbo goes up to 2 -2,5 Bar.

I tried some actuators, everthing works fine, but at high revs the boost goes up..

Had anybody else this problem?

Turbosystems

iTrader: (5)

what are you using as boost control

Brocker

iTrader: (1)

First i try regular with Amal and Actuator, but it makes 2,5 Bar at the top, now i use only a actuator, boost is at 1,5 Bar and goes up to 2 Bar at 5.000 rpm.

I had tried something, i opened the wastegate complete and fixed it in this position..
It makes 0,? Bar but at 5.000 rpm i had my 2,0 Bar with FULL opened Wastegate..

Turbosystems

iTrader: (5)

what turbine housing are you using ie make I know it's a 0.63
it sounds like you need to increase the waste gate port size and write a different boost map

Brocker

iTrader: (1)

Kompressor: Einlass 57,0mm / Ausgang 76,2mm / trim 56 / 0,60ar
Turbine: Durchmesser 60,0mm / trim 84 / -ar / internes Wastegate

I will try to increase the waste gate port size next days, but i dont know how much i can increse it ??

Stu @ M Developments

iTrader: (12)

Agreed.

Turbosystems

iTrader: (5)

I suspect your after market turbine housing is at fault
this turbo is best used with the 0.82 housing
where did you buy the turbo from as garret don't make an internally gated turbine housing

normally supplied is an atp one

Brocker

iTrader: (1)

I buyed the Turbo here:

http://www.turbozentrum.de/index.php

As i know they trade the parts from ATP..

My engine is nearly standart, so i use the .63 housing for less lag..

Turbosystems

iTrader: (5)

you will need to measure the port size of the waste gate
post up some pics

Mark Shead

Can you take a pict of the housing and wastegate flap as I have seen a couple of diff types on how the flap opens and this causes boost creep.

Mark

Brocker

iTrader: (1)

I will make photos if i expandet my Turbo, but this are the parts i use..

http://www.turbozentrum.de/turbos-co...0-63ar/a-3053/

https://www.facebook.com/photo.php?f...type=3&theater

Mark Shead

I need to see the wategate flap as I have seen some open the wrong way causing a restriction in flow and seen 1.9bar on a .82housing with act arm off.

Mark

Turbosystems

iTrader: (5)

pics of your actual turbine housing and wastegate arm and penny would help

Brocker

iTrader: (1)