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  • #1

    Boost and Check Valve questions...

    So i was just curious, you guys running boost on your NA motors, do you run a check valve before the FPR to keep boost from going into it? Same question for the Accum. Valve on the Auto trans?

    i havnt ran one on mine ever and thinking it might be a good idea, not sure if thoes parts where designed for boost so i don't know the effect on them in the long run.... ive ran them like this for years without any real problems but what is your inputs?

    S
    Shane "RedZMonte"
    [B]2004 [COLOR="blue"]Corvette Z06 Commemorative Edition[/B][/COLOR] [b]-VIRGIN[/b]
    [B]1995 [COLOR="red"]Monte Carlo Z34[/B] [/COLOR] 14.38@101mph, 331hp/355tq
    -Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors
    [B]2004 Subaru WRX STI [/B][I]-Lightly Modded (SOLD)[/I]
    [B]1994 Lumina Z34 [/B][I]-VIRGIN (SOLD)[/I]
    [B]1992 Lumina Z34[/B][I]-VIRGIN (RIP)[/I]
    [B]1992 L67 Lumina Z34 [/B][I](SOLD)[/I]
    [B]1990 Turbo Grand Prix [/B][I](SOLD)[/I]
    Tags: None
  • #2
    Shane, just for what it's worth: The Turbo Grand Prix's do not use a check valve at the FPR(same part # FPR as the NA 3.1's), but they do have a check valve before the vacuum modulator on the transaxle.



    The standard check valves GM uses for the vacuum lines going to the HVAC, etc. = what these cars have from the factory. Most of us use "HELP!" part #47150 as replacements.
    Matt F.
    [img]http://home.windstream.net/mfewtrail/sig.jpg[/img]
    [url=http://home.windstream.net/mfewtrail/]TGP 1/4 mile times[/url]
    [url]http://photobucket.com/albums/y33/mfewtrail/[/url]
    [url=http://home.windstream.net/mfewtrail/1990_TGP_coupe_vins.html]1990 TGP Coupe VIN Database[/url]

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    • #3
      Cool dude! i thought i remembered a check valve there on my TGP but its been years sence i have had it so i couldnt remember. I could just let it bleed off i would assume, it wouldnt need to be resurculated.... I would assume.... what if i just put a check valve in line so once it got into boost it just blocks all vac and boost from the modual?

      S
      Shane "RedZMonte"
      [B]2004 [COLOR="blue"]Corvette Z06 Commemorative Edition[/B][/COLOR] [b]-VIRGIN[/b]
      [B]1995 [COLOR="red"]Monte Carlo Z34[/B] [/COLOR] 14.38@101mph, 331hp/355tq
      -Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors
      [B]2004 Subaru WRX STI [/B][I]-Lightly Modded (SOLD)[/I]
      [B]1994 Lumina Z34 [/B][I]-VIRGIN (SOLD)[/I]
      [B]1992 Lumina Z34[/B][I]-VIRGIN (RIP)[/I]
      [B]1992 L67 Lumina Z34 [/B][I](SOLD)[/I]
      [B]1990 Turbo Grand Prix [/B][I](SOLD)[/I]

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