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Thread: My 5.3L into a Jeep Wrangler

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  1. #1
    chuck,
    they do run with gasoline...
    plug the IAC hole in throttle body. check idle,
    if still high vacuum leak. check the rear of
    manifold for power brake supply (large 3/8" leak).

    airdeano
    Last edited by airdeano; 07-21-2007 at 10:53 PM.

  2. #2
    Join Date
    Sep 2006
    Location
    Lafayette, Indiana
    Posts
    117
    Quote Originally Posted by airdeano View Post
    chuck,
    they do run with gasoline...
    plug the IAC hole in throttle body. check idle,
    if still high vacuum leak. check the rear of
    manifold for power brake supply (large 3/8" leak).

    airdeano
    Well, i bet that's the culprit...but it's too early in the morning for me to check it out....it having open headers and all...


    so how did you guys do guages....i need info!! :-(
    2000 PSD F250 Super Duty Ext cab long bed 4x4 - a few mods...450+ HP 500+ lbs of torque!! (Daily Driver)
    1993 YJ "Buggy"
    1991 3/4 ton Suburban 6.2L turbodiesel

  3. #3
    Join Date
    Sep 2006
    Location
    Lafayette, Indiana
    Posts
    117
    Quote Originally Posted by Chuck21387 View Post
    Well, i bet that's the culprit...but it's too early in the morning for me to check it out....it having open headers and all...


    so how did you guys do guages....i need info!! :-(
    Well, plugging that into the brake booster brought the RPMs down to about 1500....any more advice?
    2000 PSD F250 Super Duty Ext cab long bed 4x4 - a few mods...450+ HP 500+ lbs of torque!! (Daily Driver)
    1993 YJ "Buggy"
    1991 3/4 ton Suburban 6.2L turbodiesel

  4. #4
    Join Date
    Sep 2006
    Location
    Lafayette, Indiana
    Posts
    117
    Quote Originally Posted by airdeano View Post
    chuck,
    they do run with gasoline...
    plug the IAC hole in throttle body. check idle,
    if still high vacuum leak. check the rear of
    manifold for power brake supply (large 3/8" leak).

    airdeano
    Ok, i've found the port you were talking about....plugged it with my finger...she purrs like a kitten....i'm really excited now...

    Is that a special hose fitting? (the rear port on the manifold, brake booster)
    2000 PSD F250 Super Duty Ext cab long bed 4x4 - a few mods...450+ HP 500+ lbs of torque!! (Daily Driver)
    1993 YJ "Buggy"
    1991 3/4 ton Suburban 6.2L turbodiesel

  5. #5
    ive tried to just order that power brake fitting with no luck.
    ive got two in the manifolds and cannot remove them without
    breakage. currently i have a vacuum nipple blocking the port
    temporarily until i locate that fitting.

    airdeano

  6. #6
    Join Date
    Sep 2006
    Location
    Lafayette, Indiana
    Posts
    117
    Quote Originally Posted by airdeano View Post
    ive tried to just order that power brake fitting with no luck.
    ive got two in the manifolds and cannot remove them without
    breakage. currently i have a vacuum nipple blocking the port
    temporarily until i locate that fitting.

    airdeano
    Since mine was already broken off in there...i went to Menards Hardware store and bought a 90 degree plastic 3/8" hose barb fitting with 1/2" NPT threads on the other side...since that hole is .77 and OD of 1/2" threads is about the same, i touched the plastic threads on the fitting with a file (for clearance) and Hi Temp RTV'd that thing into it. I did that last night, so i'm hoping it'll be all dried and ready to test this evening. I need gauges though...this sucks...i should have run a TPI motor...
    2000 PSD F250 Super Duty Ext cab long bed 4x4 - a few mods...450+ HP 500+ lbs of torque!! (Daily Driver)
    1993 YJ "Buggy"
    1991 3/4 ton Suburban 6.2L turbodiesel

  7. #7
    Join Date
    Sep 2006
    Location
    Lafayette, Indiana
    Posts
    117
    What about air intakes? What tubes are you guys running to keep the MAF sensor and a filter...i've got all the stock parts...but i'm not sure they'll fit under my jeep hood....i searched but didn't have much luck...cause you can't search "air" because it's only 3 letters long...weird...anyways...any links to pics would be great.

    Thank in advance
    2000 PSD F250 Super Duty Ext cab long bed 4x4 - a few mods...450+ HP 500+ lbs of torque!! (Daily Driver)
    1993 YJ "Buggy"
    1991 3/4 ton Suburban 6.2L turbodiesel

  8. #8
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I use a silicone reducer elbow and 4" aluminum tube to a K&N filter. It sucks in hot under hood air right now but that will change one day when I finally build a box around it.

  9. #9
    ive welded a 90° 4" mandrel to a straight 4" and welded a 45°, welded a
    bracket to the tube for support on the alternator bracket and used a kn 1015.
    im going MAFless... id like to keep all the cfm i can get.

    airdeano

  10. #10
    Join Date
    Sep 2006
    Location
    Lafayette, Indiana
    Posts
    117
    I drove it for the first time saturday :-) came together nicely....FINALLY!!
    2000 PSD F250 Super Duty Ext cab long bed 4x4 - a few mods...450+ HP 500+ lbs of torque!! (Daily Driver)
    1993 YJ "Buggy"
    1991 3/4 ton Suburban 6.2L turbodiesel

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