mark_hub Posted May 22, 2011 Report Share Posted May 22, 2011 (edited) I bought my first Starion a few days ago and im totally excited! Now, I bought the car from a man named Evan here in Fairfield CA., he had it for sale on this site too, 83 black starion. Owner since '84 At the time of purchase i realized the valve lash needed adjustment right away, but i decided to take it for a test drive anyway... NO BOOST! Turbo does not spin at idle (Stock turbo, receipt proves rebuild - $775) But it does spin momentarily when cranked and first starts up. No Shaft play, compressor spinds freely when off. When at idle, boost guage reads around 12 i believe, and after adjusting valves properly (thank god it didnt sound like a diesel anymore!) i took it for a spin again and boost guage will NEVER exceed 0 PSI. The previous owner claims that it may need Rings, but compression is good... Also, waste gate actuator arm was not hooked up, but i used a paper clip as a carter pin to hook up the waste gate arm, this still didnt fix the issue... Im just curious if anyone can point me in a direction? I possibly thinkin the waste gate vacuum diaphragm may have a hole in it, but.... is the diagphragm metallic or metal? Thank you. -Hubble By the way, call me or text me anytime 916-350-1818 UPDATE: yesterday a friend and I disassembled the back side of the turbo (the plate that covers the waste gate) and now the car boosts to about 7 psi.. but will cut out at about 3400rpm... any ideas? Edited May 23, 2011 by mark_hub Link to comment Share on other sites More sharing options...
MikeMeyerhoff Posted May 23, 2011 Report Share Posted May 23, 2011 Are you relying soley on the in dash guage? If so you might want to take a cheapy pressure guage and t it into the vacuum lines at the throttle body. The dash guage is fed its signal by a sensor on the fireall near the break master cylinder. If something is messed up there, it won't read boost even when the car is making it. Link to comment Share on other sites More sharing options...
mark_hub Posted June 6, 2011 Author Report Share Posted June 6, 2011 UPDATE: Fixed boost problem... too much back pressure... hollowed cats out, boosts like crazy Link to comment Share on other sites More sharing options...
Recommended Posts