Hi,

i have a problem in a friend's car. It's a Cosworth 3dr with exhaust manifold and turbo of a 4x4.

The turbo can not peak more than 19 psi and holds 13,5 psi.

the turbo it's a new turbo technics s113 with a 360º bearing. I don't see any air leaks.

the car has not the amal valve, it has an air leak in the wastegate to setup the pressure

can be a problem with the new turbo??

 

as the turbo is new, it seems unlikely that the turbo is faulty.

i have seen a problem with the waste gate penny not sealing correctly, which causes boost leak

 

check all vacuum lines for splits and make sure dump valve is not faulty. Is it a new actuator on turbo??? As old ones can play up.

Do you mean the boost is set up on a bleed valve???

 

i think too in a problem on the waste gate penny

 

the actuator is new. Yes, i think that it's the correct name, a bleed valve.

 

is the actuator set at standerd

 

Yes, and i had test with another new one, with the same result.

 

so have you not ajusted the actuator to give it more boost

 

this pressure it's with the actuator tightened to the max.

with the normal adjust, it peak at 16 psi

 

Basicallly there is no need to adjust your actuator if you have a bleed valve. You do all the adjustments on the bleed valve. I can't remember exactly which way it is now as I dont use one anymore, but winding the bleed valve in or out will adjust the boost either higher or lower. Try adjusting the bleed valve to see if you can get the boost higher.

 

I adjust the bleed valve to have the higher boost, and peaks at 19 psi, no more.