84" thunderbird help!! (Full Version)

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84" thunderbird help!!

Ranger7489 -> 84" thunderbird help!! (3/24/2008 5:58:32 PM)
I'm kinda new to older vicheals, so excuse my ignorance please [8\|] About a week ago i bought a 84" thunderbird turbo coupe with plans on making it into my new daily driver (my 5.4L isent cutting it). Heres a few questions I have... Where is the BOV located in the engine bay? I cant find what liter it is...Its a straight 4 cylinder EFI with twin turbos. Does anyone know how i can find out? No owners manual... Also my boost light and over-power light works when i start it up but doesnt work when im driving. What do you think? Am i not driving fast unuff? lol[;)] Thanks for your time!!

goinstrong -> RE: 84" thunderbird help!! (3/24/2008 7:58:49 PM)
The wastegate or BPV (ByPass Valve) is usually on/in the turbo itself. It regulates the boost and exhaust pressure/flow. The actuator is a vacuum operated valve on the turbo. The valve would be a good place to look as a 20+ year old diaphragm (if original) would be prone to rot like in any older turbo. I think a BOV (BlowOff Valve) is used in superchargers? Not sure if turbos have them? (Although maybe they should after what I saw one turbo do). 4 cylinder turbos in T-bird were in most cases (unless non-factory) 2.3 Liter engines. Maybe not driving fast enough? (unless you've flattened the pedal to the floor on takeoff from a dead stop to test). Twin turbo????? I knew about the single deals - didn't hear about those. A single turbo has two turbine housings. One inflow and one outflow -- ??? Maybe that's the confusion?

Ranger7489 -> RE: 84" thunderbird help!! (3/25/2008 6:23:48 AM)
I think you were right about all of those, sorry. Ive never owned a turbo charged or supercharged car in all 24 years my life. Im new to this.

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