bosch VE land rover 300tdi

[puglove]

Kinda like an xud so thought this would be the right place for it

Been off roading today a developed a strange boost issue


Pull through the rev range as normall >>>>>> full boost 2800 rpm (20psi) >>>>> fine all normal

Rev on through to 3000rpm >>>> instant drop to 0 psi >>>> LOADS of coal >>>>>> no power

Change up to >>>> 2000ish rpm >>>> normal boost/ power >>>> normal coal

Hit 3000 rpm ish >>>> same again no boost lots of coal

Wtf is that?? Im really confussed. 

No obvious boost leaks

No sound to idicate that its dumping 20psi of boost isntantly

New CHRA about 6monts / 1000miles ago

It isnt the gauge at fault indicated by the huge amounts of coal and lack of power.

How can a turbo stop spinning instantly with 3000 rmp of exhaust gas running through it then spin up fine again the next min???

[Chairchild]

boost leak - possibly something coming loose at high airflow/pressure

[HDi--Power]

Intake pipe collapsing?

[Paul_13]

Does sound like that.
Intake pipe collapsing and sucking shut

[maxlee]

has the small pipe rubbed through from the top of the pump common on them

intake pipe shouldn't collapse as they are fairly tuff, filters not full of shit and its lifting that up in the box?

[Dave]

Get a boost gauge on it see whats happening

[JTaylor2005]

Tbf I was looking at one of these the other day. The long turbo to air box pipe round the back could be collapsing if the air filter is clogged up.

[puglove]

Errmm yeah ..... face palm

[attachment=23253]

[kee616]

There's ya problem

[darrenjlobb]

Only just seen this, heh yeah was going to say , you have a pre turbo intake problem, classic issue of something closing up under high airflow! This is a classic problem on long silicon intakes on XUD's etc!