does anyone know why my turbo is surging ? the cam has been adjusted and seems to have improved things a little, but until i get a chance to replace the cam and set it all up properly i thought id ask if this has come up before ? ?

 

i know it maybe stupid to ask but whats surging on boost mean

 

ok the boost pressure is unstable goes from 12 down to 9 back up to 12 , its set on 08 right now and is holding steady as im running her in, im sure itll be sorted eventually as anything can be . i just thought id see if this has come up before......

 

Actuator? if thats goosed that would mess ur boost about

 

i was told when i got the car it needs a new one, then later i was told it was fine .

its not too important right now as im running in, but it will need sorting soon.....

 

using a amal valve?, air leak somewhere on turbo/vacuum pipes?

 

i will find out in 400 miles when shes done 1k and will be ready for full boost set up, but there is an amal valve there , i cant see how its a leaky pipe as its holding strong now even tho its on 0.8

 

Surge is basicaly an imbalance of pressures between the turbine side and the compressor side of the turbo, this presure (back pressure) enter's the exit of the compressor housing, disrupting flow through the compressor wheel.

Surge is normaly caused by an incorectly spec'd turbo unit.

 

so what should i do to find out if my unit is incorrectly specced ?

if the problem cant be resolved by any other means

theres no way its the actuator then ? as it seems to be hlding now at 0.8

 

Whats the turbo? stage 1 - 3?

 

it is a t3 unit , and was new on the car 3 months ago when i got the car

 

you could borrow a t3 off of someone and fit that to see if problem is still there if it isnt then get your turbo sorted or just buy another second hand t3

 

yea h its that easy

 

All should become apparent when your cars being set up!

Its often the case boost isnt what it would appear to be, due to a lot boost guages being inacurate.

Hope things work out ok for you

 

thanks matey , im pretty sure whatever the problem is will be fixed, i mean its only money right

it might be the actuator it might be more serious, i cant wait to find out actually , lol

i should have some fun though on the way home.....