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Am I being dumb or is this for real?

Discussion in 'Early CJ5 and CJ6 Tech' started by molsenice, May 13, 2008.

  1. molsenice

    molsenice Member

    just heared back from the machine shop on the 134 Fhead. $603 for the labor to bore the block and put in new valve guides. $631.77 for new pistons, rings, valve springs, oil pump and seals to rebuild the engine.

    I put it all together and it still is going to cost me 1234.77?

    ouch - I had budgeted what I thought was high at 700
     
  2. sparky

    sparky Sandgroper Staff Member Founder

    :v6: runs about that much I thought, maybe a bit more since it has two more cylinders.

    Doesn't sound out of line to me.
     
  3. 1969 CJ-5

    1969 CJ-5 AZ Native

    1800 in to my 225 V6.
     
  4. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    $600 for machining doesn't sound outrageous. Ask for a line-item breakdown.

    Did the shop measure the bore taper? Why are you replacing the pistons? Pistons are expensive. If the bore taper is not excessive, hone the bores, fit new rings and reuse the pistons.
     
  5. molsenice

    molsenice Member

    The piston groves for the rings are whipped acording to the machine shop - too much play.

    Welp - I guess I should bring the guy some cash so he can get it done
     
  6. DanStew

    DanStew Preowned Merkin salesman Staff Member

    Maybe price around what you can buy the parts for. They may be marking up the prices on the parts because they are ordering them.
     
  7. Mcruff

    Mcruff Earlycj5 Machinist

    This was my bill in 2005 on my Dauntless when I had it done at a local shop.
    I used the Autozone kit that was $354 + tax back then. My total on the above machine work was $538. I had about $1200 total in the rebuild with paint, lube and gasket sealers and such along with a oil pump kit and roller chains.
     
  8. blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Sounds about right.
    You are using the Krage kit right?
     
  9. blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Complete Engine Kit for all F-Head 4 cyl's
    Part#: 134FHK-P-MB-RB (17405.03)
    Model: All Models
    Year: 54-71 $495.00
     
  10. blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

  11. molsenice

    molsenice Member

    not sure if it is a krage kit or not, it is what teh machinist said I needed
     
  12. Rondog

    Rondog just hangin' out

    1200+ zords to rebuild a 4 banger? [​IMG] [​IMG] [​IMG] [​IMG] No wonder mine ain't done yet....
     
  13. fheadcj6

    fheadcj6 Member

    the last f head i heard being rebuilt in Oz cost nearly $4000. it's good to have to import all your parts.
     
    Last edited: May 13, 2008
  14. nickmil

    nickmil In mothballs.

    The machine work for the Race Jeep motor, just to the block, crank, and rods, cost me $700. That was with a discount. Fortunately I could do the heads myself and all the assembly. The heads would have cost an additional couple of hundred dollars...... You don't even want to know what i have tied up in parts.....
     
  15. molsenice

    molsenice Member

    I will be bringing the machine shop the cash in the am for the block work. I was told that with the valve guides being replaced, that he would have to grind them I'm replacing both the intake and exhaust. I also have the ability and machinery to do the head work, might see what me doing the valves will be.

    once the machine work is done, I can look into the Krage kit.
     
  16. Rondog

    Rondog just hangin' out

    Of course, the last time I rebuilt an engine or had any work done, most of you were probably still in grade school. Didn't realize how long ago it was until I thought about it. At least I already have an engine rebuild kit.
     
  17. blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    I would get the kit first in the event it needs to be bored oversized.
     
  18. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    I'd respectfully disagree with Bill. Check on what size pistons you can get from Krage though (call!). If your shop is going to bore the block, it will be to a standard size, like 30, 60 or 100 over (30 thousandths oversize in diameter etc). The pistons should be selected to match the smallest standard oversize dimension the shop can achieve with the block material that's still there, not the other way around. The shop will measure the bores and usually can determine what size pistons you will need. However, you don't want to have to send your engine kit back... I'd wait until the boring is actually done, unless you are really pressed for time.

    You'll also need to measure the crank and rod journals, to determine if you need standard or oversize bearings. This too needs to be spec'd when you order the kit. Even if no crank grinding is planned, you need to measure the crank, since it's an old engine and could have a reground crank already. I'd magnaflux the crank if it were mine. I presume the shop has checked the block and head for cracks.

    The shop will install your cam bearings too - these will come in the kit.

    (NB - this is why a good, used engine is almost always the cheapest route to getting your project running. Rebuilding is typically much more expensive than almost any engine you can buy used).
     
    Last edited: May 14, 2008
  19. blevisay

    blevisay Oh Noooooooooooooooo! Staff Member



    I have NEVER relied on the pistons being the "right" size, ALL the machine shops I have delt with insisted on having the pistons before they started boring. As far as the crank they should be able to mic it and tell you before you order.YMMV
     
  20. Mcruff

    Mcruff Earlycj5 Machinist

    X2, you bore the block to match the pistons, not the other way around!!