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At what boost will heads lift?

Discussion in 'Turbo Tech Questions' started by Malandrino, Apr 11, 2006.

  1. TurboShortBus

    Joined:
    Dec 22, 2003
    Just put the turbo on your car and go have some fun already.

    The only way to guarantee that you won't blow it up is to keep it in the garage and never start it.

    Mark
     
  2. Cld12pk2go

    Joined:
    Jan 25, 2004
    My timing is roughly equivalent to 2* base....
     
  3. Malandrino

    Joined:
    Feb 12, 2006
    Damn.. Ok cool Just trying to button up the k member than can finish turbo install...
    Thanks
     
  4. MORA

    Joined:
    Jan 30, 2003
    Forgive me for not remembering the specific settings of the set-up, but I can remember it starting to work from like 5-7 psi. It was also on the rich side.

    Mind you, I'm in Puerto Rico, so the tune is way different.
     
  5. Cld12pk2go

    Joined:
    Jan 25, 2004
    My alky was set to come on at 4 PSI.
     
  6. stockhatch

    Joined:
    Jan 31, 2003
    What he said. Even though I suspect you MAY have issues with HGs, its not the end of the world. I dont recommend a turbo Mustang as a daily driver, but if you have other means of transportation then by all means, throw some boost at it and have fun.
     
  7. Malandrino

    Joined:
    Feb 12, 2006
    AHHHH DONT SAY THAT!!! Thanks for wrecking my hope for the summer in advance lol
     
  8. TurboShortBus

    Joined:
    Dec 22, 2003
    If you wanna fuck with the bull, you're gonna have to take the horns every now and then. Nobody said this car stuff was cheap or easy. If you want cheap and easy, then collect stamps.

    Mark
     
  9. Malandrino

    Joined:
    Feb 12, 2006
    lol stamps... funny guy... Im not building somethin to go blow up with guesstimation and no knowledge. Im here asking questions for a reason trying to build a decent reliable street car...
    Whats wrong with that. Everyone on the site says that its the guys who go out and pop a HG by bolting on the turbo and "seeing what it can do" instead im taking my time and tryin to do it right with a budget.
    So shoot me
    Larry
     
  10. stockhatch

    Joined:
    Jan 31, 2003
    It wont be reliable. Sorry. I hope you dont need the car to get to work/school...
     
  11. Malandrino

    Joined:
    Feb 12, 2006
    Damn.....
     
  12. 302tt

    Joined:
    Aug 4, 2004
    Just to balance up this discussion a little...I drive mine to work 5 days a week. In the last year I have had 2 weeks of down time when I broke the T5. I also had to fix a slipping clutch but that was not stopping me from driving it since it only slipped above 12psi boost; that was a weekend job.

    So a backup plan for getting to work is a good idea, but you dont necessaily need a second vehicle.
     
  13. TurboShortBus

    Joined:
    Dec 22, 2003
    Same boat here...from 1995 until 2001 (when I bought a backup beater car), my 1994 GT convertible was my daily driver and weekly track thrasher. It started out with a centrifugal blower, then went to a single turbo, and was running high 11s/low 12s and getting me to work the next day. I had a couple of non-boost related failures that, in total, cost me about 2 weeks of rental cars (not bad for 6 years).

    The main thing that saved me, though, is that I did my homework, paid attention, and was smart about what I was doing. I wasn't concerned with the heads lifting, since I was never going to start out with that much boost in the first place. I was by no means new to working on 5.0s (been doing it since 1990). If you start off simple and smart, then you greatly reduce your chances of breaking parts. Worry about alcohol injection and head-lifting boost pressures much, much later.

    I have seen dipshit squirrels throw a new combo at their car, turn the boost up, and melt it down on the first pass. Don't be that guy.

    BUT, if you're going to worry about daily reliability, then you're in the wrong game if you don't have some money set aside for renting cars, buying spare cars, or the higher repair cost of having someone fix the car ASAP vs fixing it over the next few weeks.

    Mark
     
  14. stockhatch

    Joined:
    Jan 31, 2003
    Ok. I agree that a turbo car CAN be a daily driver, but they sure as heck arent know for their reliability. Reliability of a turbo Stang is inversely porportional to the sum of money you have in it, and the amount of boost you run. If you have the money to have the car tuned on a dyno, or the equipment to tune it yourself, it stands a much better chance of living a healthy life.

    If you throw a turbo car together, and dont tune it with a wideband, its a crapshoot(just like stock heads lifting or not). If your lucky, it just wont idle, will die during certain conditions, or just have all around bad driveability. If your unlucky, it will pop headgaskets weekly, shatter rings, wipe the bearings due to water in the oil, etc.

    Not trying to rain on your parade here. Just preparing you for the inevitable. Heck, maybe everything I say is crap and itll run flawlessly for years and years. That sure would be cool. But I doubt it. Look at the track record for turbo Mustangs. Theyre like DSMs. They haul ass when theyre running, but it sure doesnt seem like theyre running that often...

    PS, how do you plan on tuning the car? Chip? TwEECer?
     
  15. turbofreek

    Joined:
    Feb 28, 2004
    :withu:
    the only difference is im going blowthrough so i can do my own tuning. and im not planning on upping the boost for a long of time. or until im 100% positive its right on tune wize. and then i'll hit the dyno to get my hp numbers and tune finalized and just leave it. that is the hardest part of it all not uping the boost after! remember that chassis tuning will go just as far as horsepower when it comes to boost. :2thumbs: also i have all summer to tune im off work out of school in a week so i gots plenty of time to tune and play :chacha:
     
  16. Turbo89

    Joined:
    Nov 5, 2003
    Im not sure I agree , with needing a second car or that they are any more unreliable then any other car. I mean lets face it a car is mechanical it can break at any point for anything, not just a turbo stang
    but a Honda or Toyota too.

    i drove my 92 LX to work and back everyday 74 miles round trip, for 3 years, about 60 K on it with a Turbo, had 1 failure when I blew the tailshaft assembly off the T5 launching @6K with slicks while street racing.

    Again if you keep the boost down , keep the timing within reason, have a "decent" tune, and dont drive it like you hate it, it can live and be reliable. Just dont go expect to go out and run 20 psi with 93 octane on 30 degress timing.

    Common sense is not so common
     
  17. turbofreek

    Joined:
    Feb 28, 2004
    :ahah: :lh: :2nd:
     
  18. Malandrino

    Joined:
    Feb 12, 2006
    Awesome i have the back up car... 89 bmw thats not a prob but im def buildin for reliability. It is mechanical agreed, lifting heads dont matter yet but id rather learn before i need to know. And hey if i stumble upon knew info while looking up pointless stuff :2thumbs:
     
  19. rickyhaiber

    Joined:
    Dec 13, 2005
    My car (stock '94 cobra throttlebody-oil pan) with a cartech t61 kit, alcohol injection, and 12 psi from the turbo blew the head gasket after 61 miles :chacha: I might have a record! The Cometic head gaskets should be on by tomorrow night and we'll see how well they do
     
  20. Malandrino

    Joined:
    Feb 12, 2006
    Were u still in the tuning stage?
     
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