OUR VIDEOS GALLERY MEMBER SPONSORSHIP VENDOR SPONSORSHIP

User Tag List

Page 1 of 3 123 LastLast
Results 1 to 10 of 23

Thread: 2.8l Rebuild Options

  1. #1
    Expert Shaunous's Avatar
    Join Date
    Jun 2011
    Location
    Eagleby, QLD
    Posts
    125
    Thanks
    13
    Thanked 17 Times in 11 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    2.8l Rebuild Options

    Hi All,
    So after 2 different compression tests my rough running engine and smoke machine has come down to 2 cylinders down badly in compression (Cyl 1&2). Runs beautifull when its warm, cant even tell there is anything wrong with it, but starting cold its got a bad misfire and blows a hell of alot of black, then blue, then black smoke.

    Called a couple of engine reconditioners just to ask the question, and seems a full rebuild with me removing & installing the engine myself is going to cost about $4000...

    Anyway, thought I would ask the question about what most people seem to do when their RD28t runs out of puff...

    I realise it may only be a head problem, but its not worth just re-doing the head on a bottom end with 310000kms...

    Cheers,
    Shaun...

  2. #2
    Patrol Freak
    Join Date
    Dec 2010
    Location
    Benarkin QLD
    Posts
    932
    Thanks
    0
    Thanked 247 Times in 196 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Black smoke excess fuel,blue smoke rings, white smoke unburnt diesel

    The only problem with reconditioners "Guestimates" is they dont really know how stuffed the motor is till its pulled down
    IF the head is perhaps cracked beyond repair (like my ol GU 2.8) there goes 2K straight away

    Id either get a 2nd opinion on the motors condition,then assess the situation
    Live with it, drive it in the ground
    Or look for a good running condition 2nd hand 2.8 T diesel
    OR , even buy a complete running car

  3. #3
    Expert Shaunous's Avatar
    Join Date
    Jun 2011
    Location
    Eagleby, QLD
    Posts
    125
    Thanks
    13
    Thanked 17 Times in 11 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by MQ MAD View Post
    Black smoke excess fuel,blue smoke rings, white smoke unburnt diesel

    The only problem with reconditioners "Guestimates" is they dont really know how stuffed the motor is till its pulled down
    IF the head is perhaps cracked beyond repair (like my ol GU 2.8) there goes 2K straight away

    Id either get a 2nd opinion on the motors condition,then assess the situation
    Live with it, drive it in the ground
    Or look for a good running condition 2nd hand 2.8 T diesel
    OR , even buy a complete running car
    I've done a compression test myself, and also had an engine shop do a compression test. Its buggered.
    I'll take the head off and see the full extent of the damage, but was just wondering what people have done in the past.

  4. #4
    Patrol Freak
    Join Date
    Dec 2010
    Location
    Benarkin QLD
    Posts
    932
    Thanks
    0
    Thanked 247 Times in 196 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Shaunous View Post
    but was just wondering what people have done in the past.
    What i done when my GU (not a GQ i know) 2.8 had issues
    After finally spending way to much on the head cracked issue,over 4K on the top end alone
    (Brand new bare head , labour,parts ect)
    I sold it real quick while it was running
    I was at the time in a bind re wheels,so it was fix it then unload , or sell it not goin for near nothin

    If i had the choice now, and had the time,that i didnt have then
    For 4K and time on my side,it would be as i mentioned a 2nd hand motor
    Or look for a power upgrade

    I just wouldnt spend 4K on a 2.8

    Should be able to get a fairly good nick complete GQ 2.8 for around that money

  5. #5
    Legendary
    Join Date
    Jun 2010
    Posts
    3,422
    Thanks
    516
    Thanked 2,138 Times in 1,001 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Another option to consider is replacing the RD28 with a petrol RB25DET. They bolt up to the same bell housing and engine mounts, provide similar fuel economy and torque with about double the power. For even more torque you can fit an RB30 bottom end under the RB25 head.

    Tony
    Attached Images Attached Images

  6. The Following 2 Users Say Thank You to YNOT For This Useful Post:

    Shaunous (21st August 2011), Silver (20th August 2011)

  7. #6
    Beginner stormpatrol's Avatar
    Join Date
    Mar 2011
    Location
    newy
    Posts
    3
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    time for a 4.2 diesel with turbo

  8. #7
    Advanced
    Join Date
    Aug 2011
    Posts
    33
    Thanks
    4
    Thanked 5 Times in 1 Post
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Bump.

    Hi Shaunous, how was this resolved. New engine? rebuild? interested to know.

    thx, Tuck.

  9. #8
    Expert Shaunous's Avatar
    Join Date
    Jun 2011
    Location
    Eagleby, QLD
    Posts
    125
    Thanks
    13
    Thanked 17 Times in 11 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hi Tuck,
    Well I'm back over in PNG working now, but when I get home i'm going to remove the engine and send it to get rebuilt I think (still deciding, but so far rebuild is winning). It's going to cost me just under $4000 for a complete rebuild using good quality parts.
    For me, the car cost next to nothing, the clutch is brand new, the tyres are brand new and alot of other bits and pieces have all be replaced or rebuilt, non of which I paid for, so I think $4000 on a next to new engine is money thats going to give me a car that'll last many more years to come.
    I am a diesel mechanic myself and could do the engine for just the cost of the parts, but it takes time, and when im only home for 2 weeks out of every 7, i don't wanna be doing major works to my 4x4, and having to send the head and block away anyway

    Replacing with another model engine is also alot more time consuming, and likely to give headaches down the road...

  10. The Following User Says Thank You to Shaunous For This Useful Post:

    TUCK (21st August 2011)

  11. #9
    Expert lachiek's Avatar
    Join Date
    Dec 2010
    Location
    Sydney CBD (for my sins)
    Posts
    106
    Thanks
    21
    Thanked 23 Times in 13 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hey Shaunous, I'm in the same boat re rebuild / replace my 2.8. What are your compression readings? I'm at 280 PSI all round but the truck is driving really strong so a bit confused about what to do.

    How hard is it to remove the engine to send for rebuild? I'm not a mechanic but have patience, time an willingness to learn by mistakes....

    Cheers, Lachie
    GQ Safari 2.8TD. BFG AT's / Safari Snorkel / Straight thru exhaust / Lots of electrical mods

  12. #10
    Advanced
    Join Date
    Aug 2011
    Posts
    33
    Thanks
    4
    Thanked 5 Times in 1 Post
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sounds like a good bit of common sense. $4k for a quality rebuild seems like excellent value.

    Cheers, Tuck.

Page 1 of 3 123 LastLast

Posting Permissions

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