Robv27
05-05-2014, 05:19 AM
I know this is an AUDI forum but i also know all turbocharging principals are the same and i posted this on Vortex ang got no response... since i drive an Audi, i know these forums could help me too, so TIA.
So we just finished installing a turbo kit on my friends 01 GTI VR6 and went for a spin and car is running great but it will not boost over 3 psi. I'm thinking the wastegate is stuck open?? its a T04B Garret turbo and he bought the famous Ebay external wastegate (Turbo XS or whatever). Cant hear the BOV either...(old greddy Type S that we just took out of another car and it was working). Anyway... it said it was supposed to have a 8psi spring. so we just had it connected from the bottom nipple of the wastegate straight to the compressor housing nipple, so we drove it and got 3psi and that was it, so I thought... well, it must be a 3psi spring instead and not 8psi spring, so I hooked up my manual boost controller between the WG and Compressor housing and no matter how much we cranked it, 3psi only... so I thought, lets just run it open, so I disconnected the nipple of the bottom of the wastegate and left it open... drove it, and again 3 psi.... What tha heck is going on?? makes me think the wastegate is stuck open... am I right?? any ideas would be greatly appreciated... don't know exsctly why but BOV wont sound at all either.... and just so you guys know, it did come with the "fire ring" and we did install it and we also installed a gasket between the wastegate flange/firering and manifold!!!(I actualy wasn't sure if it needed a gasket there) BTW, WG dump tube going back to exhaust, and not open! Thankls again in advance!!
So we just finished installing a turbo kit on my friends 01 GTI VR6 and went for a spin and car is running great but it will not boost over 3 psi. I'm thinking the wastegate is stuck open?? its a T04B Garret turbo and he bought the famous Ebay external wastegate (Turbo XS or whatever). Cant hear the BOV either...(old greddy Type S that we just took out of another car and it was working). Anyway... it said it was supposed to have a 8psi spring. so we just had it connected from the bottom nipple of the wastegate straight to the compressor housing nipple, so we drove it and got 3psi and that was it, so I thought... well, it must be a 3psi spring instead and not 8psi spring, so I hooked up my manual boost controller between the WG and Compressor housing and no matter how much we cranked it, 3psi only... so I thought, lets just run it open, so I disconnected the nipple of the bottom of the wastegate and left it open... drove it, and again 3 psi.... What tha heck is going on?? makes me think the wastegate is stuck open... am I right?? any ideas would be greatly appreciated... don't know exsctly why but BOV wont sound at all either.... and just so you guys know, it did come with the "fire ring" and we did install it and we also installed a gasket between the wastegate flange/firering and manifold!!!(I actualy wasn't sure if it needed a gasket there) BTW, WG dump tube going back to exhaust, and not open! Thankls again in advance!!