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Thread: 4.8 Turbo Sizing

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  1. #1
    Join Date
    Sep 2005
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    Austin Tx.
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    rear mounts arent THAT bad.... lol
    1951 3100
    1984 C10

  2. #2
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    Houston
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    Quote Originally Posted by duckysbht View Post
    rear mounts arent THAT bad.... lol
    yes they are. really is the WORST place to put a turbo.

    turbos like to be hot.
    the exhaust gasses going thru the turbo like to be hot.

    The closer the turbo is to the engine, the warmer the gasses going into are
    and the warmer the turbo the better.

    Hot gasses have faster velocity are expanded more and thus spool the
    turbo much better.

    Only way I would do low mount turbos on our truck is 2 small twins
    hanging off each manifold down by the bellhousing.

    Remote mounting a low turbo should be a plan of last resort if it
    just will not fit up in the engine bay.
    Last edited by r.barn; 12-21-2008 at 04:10 PM.
    2002 Tahoe 4.8 - soon to be turbo'd - SOLD
    1989 Mustang - LX Vert - 351W-TT - 2inches of dust covering it
    2012 Raptor - 497rwhp at 10psi
    If you aint breaking - you aint going fast enough

  3. #3
    Join Date
    Sep 2005
    Location
    Austin Tx.
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    Quote Originally Posted by r.barn View Post
    yes they are. really is the WORST place to put a turbo.
    lol whys that? have you run one?
    1951 3100
    1984 C10

  4. #4
    Join Date
    Oct 2008
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    Houston
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    807
    Quote Originally Posted by duckysbht View Post
    lol whys that? have you run one?
    I edit my post with all the reasons.

    Been around lots of turbo installs.
    Very familiar with turbo design dynamics.
    Not my first trip down the turbo road.

    My last "homemade" project
    Last edited by r.barn; 12-21-2008 at 04:14 PM.
    2002 Tahoe 4.8 - soon to be turbo'd - SOLD
    1989 Mustang - LX Vert - 351W-TT - 2inches of dust covering it
    2012 Raptor - 497rwhp at 10psi
    If you aint breaking - you aint going fast enough

  5. #5
    Join Date
    Jul 2008
    Location
    Mesa, AZ
    Posts
    5,979
    Quote Originally Posted by r.barn View Post
    yes they are. really is the WORST place to put a turbo.

    turbos like to be hot.
    the exhaust gasses going thru the turbo like to be hot.

    The closer the turbo is to the engine, the warmer the gasses going into are
    and the warmer the turbo the better.

    Hot gasses have faster velocity are expanded more and thus spool the
    turbo much better.

    Only way I would do low mount turbos on our truck is 2 small twins
    hanging off each manifold down by the bellhousing.

    Remote mounting a low turbo should be a plan of last resort if it
    just will not fit up in the engine bay.
    Ok now why is it that THE FASTEST GTO in the country...which runs mid to low 10's...is on a REAR MOUNT???? Can you answer that? I mean I didnt know that 10's was slow?? What do you run?
    T-RAV
    99 GMC | 5.3 | Skinny White Guy Tuned

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