View Poll Results: Drop in a rebuild 318 or keep the jeeps heart and rebuild

Voters
33. You may not vote on this poll
  • Drop in a rebuild 318

    20 60.61%
  • Drop in the jeeps inline six heart rebuild

    13 39.39%
Page 3 of 3 FirstFirst 123
Results 41 to 46 of 46

Thread: jeep motors

  1. #41
    Join Date
    Nov 2003
    Location
    Welland
    Posts
    1,601
    Time Online: 1 Wk 3 Days 10 Hrs 33 Mins 37 Secs
    Avg. Time Online: 51 Secs
    Rep Power
    15
    Like Screwen said, you have to figure out what is going to be best for you. There isn't one option thats better then the other no matter what.

    Nothing besides just swapping in another 4.2L is going to be easy. They will all involve some work and money.

    Basically your options are

    4.2L
    Advatages
    - Drops right in
    - Uses all your existing accessories and wiring and parts
    - Cheap and keeps vehicle stock
    - Carb can be swapped with a better alternative to fix common stalling problems
    - Supposed to be a very reliable motor (but Carb was junk stock)
    - parts can be obtained easily (aftermarket and used)

    Dis-advatages
    - Stock, and can feel underpowered on the road
    - Not much out there in the aftermarket for power upgrades
    - Stock Carburator was junk

    4.0L
    Advatages
    - Drops right in
    - Uses all some existing accessories
    - Not too expensive if you get an entire donor vehicle to get all your parts from and just swap everything over
    - A bit more power
    - Fuel Injected
    - parts can be obtained easily (aftermarket and used)

    Dis-advatages
    - Requires some Fuel line and Wiring work
    - Fuel Injected so you now have to worry about computers and sensors
    - Can feel a little underpowered sometimes on the road

    Stroker
    Advatages
    - Drops right in
    - Uses some of your existing accessories
    - Looks stock
    - Lots more power

    Dis-advatages
    - Not Cheap
    - You will have to be able to rebuild a motor and have some machine work done
    - Requires some Fuel line and Wiring work
    - Fuel Injected so you now have to worry about computers and sensors

    v8 (Carb'd)
    Advatages
    - Depending on the motor, parts can be obtained easily (aftermarket and used)
    - Lots of Power
    - Conversion Parts can be bought online
    - Litle bit of modifying to the fuel lines and the Wiring
    - Some say you can get the same mileage out of it as the inline 6 motors

    Dis-advatages
    - Will require notifying the DMV to get the ownership changed to say v8 for etests (may also tweak your insurance rates if you inform them about it)
    - Requires some conversion parts, and some fabrication/modifying of the Jeep itself
    - Requires new custom exhaust to be made up
    - May require upgrades to axles and the remainder of the drivetrain do to increase in power

    v8 (Fuel Injected)
    Advatages
    - Depending on the motor, parts can be obtained easily (aftermarket and used)
    - Lots of Power
    - Conversion Parts can be bought online
    - Some say you can get the same mileage out of it as the inline 6 motors
    - Its Fuel Injected

    Dis-advatages
    - Will require notifying the DMV to get the ownership changed to say v8 for etests (may also tweak your insurance rates if you inform them about it)
    - Requires some conversion parts, and some fabrication/modifying of the Jeep itself
    - Requires new custom exhaust to be made up
    - May require upgrades to axles and the remainder of the drivetrain do to increase in power
    - Requires modifying of wiring and fuel lines
    - Since its injected, you have a computer and sensors to worry about


    Now thats just a quick list off the top of my head. None of the swaps are as simple as just dropping in a new motor and starting it right up (except for the 4.2). You will need to do research and read up on the many resources that you can find using google for each option and figured out which one you feel comfortable in doing. It will probably come down to 3 things

    1. Budget - What can you afford realistically?
    2. Skill - What can you do on your own, and what can't you do?
    3. Goal- What are you ultimatly looking for? Will the extra power of a v8 be needed and does its need outway the extra work/cost? Realistically, do you really need any more power then what you already have?

    Once you can answer those questions, you should be able to narrow down your list and have a bit of an easier time deciding what you should do

    And the HO heads came on 91+ 4.0L motors IIRC
    1987 Jeep YJ - Daily driver/trail rig - On the road but Currently under construction

    Thanks everyone for helping me realise I really do dislike people in general

    I'm just a regular Joe, with a regular Job, I'm your average white Suburbanite slob
    I like Football, and Porno, and Books about War

  2. #42
    Join Date
    Feb 2003
    Location
    Belleville, Ontario
    Posts
    1,929
    Time Online: 41 Mins 21 Secs
    Avg. Time Online: N/A
    Rep Power
    16
    if i remember right and you are the guy that i met in front of the hospital in belleville. I dont think the problem is as much your engine as it is your wiring

    i would look in to the nutter bypass
    95 yj on ford 60's, 4.3, 700R4, Flipped 300 and 38's

    R.I.P. www.kanrok.com R.I.P.

  3. #43
    Join Date
    Feb 2003
    Location
    Belleville, Ontario
    Posts
    1,929
    Time Online: 41 Mins 21 Secs
    Avg. Time Online: N/A
    Rep Power
    16
    Quote Originally Posted by 89tjdude View Post
    318 sounds like to much work for what i get out of it and the 4.0L i need to find a jeep with all the wiring...not sure where to find one i may know if i can find it im doing the 4.0...and how do i know what is or isnt a 4.0 high output head
    all jeep yj's came with H.O.'s the non H.O's came in earlier XJ's

  4. #44
    Join Date
    May 2006
    Location
    Arnprior ON.
    Posts
    71
    Time Online: 3 Mins 34 Secs
    Avg. Time Online: N/A
    Rep Power
    12
    I have a 318 with a TF727 in my YJ and love it. Lots of power and it doesn't use really any more gas than my old 4.2.
    89 YJ 318, TF727
    Holley Truck Avenger carb.
    SOA +2.5'
    33" Trxus

  5. #45
    Join Date
    Feb 2003
    Location
    Belleville, Ontario
    Posts
    1,929
    Time Online: 41 Mins 21 Secs
    Avg. Time Online: N/A
    Rep Power
    16
    there is a 4.2 for sale for $400 in the for sale forum

  6. #46
    Join Date
    Sep 2007
    Location
    thomasburg
    Posts
    62
    Time Online: N/A
    Avg. Time Online: N/A
    Rep Power
    11
    there is nothing wrong with my 4.2 i just want more power

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •