fix or trade?

Discussion in 'Mechanic and Repair' started by cclllc, Sep 20, 2007.

  1. cclllc

    cclllc LawnSite Senior Member
    Posts: 864

    I am at a delima.I have a 1985-c30 1 ton (454 cid) with 165000 miles on it. It jumoed time last weekend and I have it tore down. I am not sure if it has any other damage like valves bents or what. i was wondering what would you guys do. Replace the timing chain and see what happens or replace the motor3500-4000 dollars or replace the truck . I have ad it since it was almost new and i rebuilt the tranny last year.
     
  2. Brad Ent

    Brad Ent LawnSite Member
    Posts: 228

    Step One:
    Evaluate your current truck:
    Is this truck the right truck for the job?
    Condition of body?
    Transmission - good
    Brakes?
    Exhaust?
    Etc.
    Estimate total cost to replace engine and other repairs?
    Total cost to keep $
    Step Two:
    Determine the make model of a replacement truck
    Step Three:
    Calculate cost to replace:
    Purchase price?
    Registration?
    Taxes?
    Insurance?
    Etc.
    Step four:
    List pros and cons for new vs current
    Sleep on it overnight and make the best descion based on the data collected.
     
  3. Eric D

    Eric D LawnSite Senior Member
    Posts: 295

    Was it running after it jumped timing? How many teeth off was it? If it still ran after the chain jumped, I would replace the chain and put it back together and use it. Chances are pretty good you will be alright once you have the new chain in.
     
  4. carcrz

    carcrz LawnSite Silver Member
    Posts: 2,085

    I was in the same place w/ a 95 F250 last year. I ended up buying a new 2005 Ram 2500 diesel & the fuel alone savings on the new truck pays for a good chunk of the new truck payment. Might be something else to consider.
     
  5. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    I'm with Eric,

    Small and big block Chevy's are not that prone to bending valves. But, You could pull the valve covers and look for any bent push-rods. If none are bent put a new timing set in it and run it some-more, Or after fixed up-grade since it would be worth more running.
     
  6. EMJ

    EMJ LawnSite Member
    Posts: 200

    If you can afford to have the truck broken down, and do not have the money for a new, one fix it. If you can afford a new one, and will not strap yourself to thin, get a new one.
     
  7. cclllc

    cclllc LawnSite Senior Member
    Posts: 864

    It never tried to restart.Almost all the teeth are missing.I may have done some of them turning the crank by hand.
     
  8. Stillwater

    Stillwater LawnSite Platinum Member
    Posts: 4,798

    It jumoed time last weekend

    What The Hell Does This Mean?
     
  9. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    AS in my other post;

    Throw a $35.00 gear set on without full re-assembly and perform a compression test/check push-rods.

    I was in the auto biz long before L/G equipment....

    Or just go buy a new truck and be done with it !
     
  10. khouse

    khouse LawnSite Bronze Member
    Posts: 1,465

    Your already in there so install the new chain and gear. It's a $50.00 gamble that you won't have to spend 3K$ on a new engine. Very unlikely there is a bent valve. Just about the only engines that bend valves is overhead cam engines with timing belts. We know that's not the case on your bad boy 454.
     

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