need a new motor!
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Northstar Engines and System Technical Discussion Discussion, need a new motor! in Cadillac Engine Technical Discussion; Where can I buy a new/used northstar for my 2001 Cadillac dts VIN 9 for a fair price with low ...
  1. #1
    cadillac00 is offline Cadillac Owners Member
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    need a new motor!

    Where can I buy a new/used northstar for my 2001 Cadillac dts VIN 9 for a fair price with low mileage I really need it asap my HG has failed. I live in st.louis if that's any help but if they can ship that's great. I looked on Ebay but it's all junk.

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: need a new motor!

    Why not fix the one you have? A used motor is a roll of the dice. You may suffer another HG failure in the future.

  4. #3
    cadillac00 is offline Cadillac Owners Member
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    It costs more to rebuild the motor then it does to just get a used one

  5. #4
    98eldo32v's Avatar
    98eldo32v is offline Cadillac Owners Connoisseur
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    Re: need a new motor!

    A used one will be a little less, but you don't know the history per se' of that motor and all you're doing is setting yourself up for another headgasket failure.

    It's your call.......

  6. #5
    beebop01 is offline Banned
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    Re: need a new motor!

    contact me I am located in Indianapolis, IN I have a overhaul/ repair ad on EBAY

  7. #6
    stoveguyy is offline Cadillac Owners Connoisseur
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    Re: need a new motor!

    are you going to remove motor or pay someone to do it? you drop subframe and remove motor from assy. swap in different motor. and now you need to get rid of old motor. or pull heads and install serts or studs. so you need sert kit or whatever. this all takes time. might take several days. does shop want to tie up bay for 2-3 days? most say fixing motor is way to go since you dont end up with core parts. most used motors have accessories attached. p/s, alt, a/c and so on.

  8. #7
    vincentm's Avatar
    vincentm is offline Cadillac Owners Connoisseur
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    Re: need a new motor!

    This thread is full of fail...

  9. #8
    basscatt's Avatar
    basscatt is online now Cadillac Owners Master
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    Re: need a new motor!

    It costs more to rebuild the motor then it does to just get a used one

    that may be true - but
    what happens if the "new" motor develops the head gasket problem
    500 miles after having it installed -

    if you get a "guarantee" on the used motor -
    the supplier might send you another motor -
    but you still have to pay to have the engines swapped - again -

  10. #9
    stoveguyy is offline Cadillac Owners Connoisseur
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    Re: need a new motor!

    "fail" as in lots of money? Buy a remaned motor and have it installed. Pretty good odds of success. Properly repair existing block? Also good odds. Use car-parts.com to find motors in ur area. All yards I know use it to find parts. I do too. It lists remaned and used motors.

  11. #10
    cadillac00 is offline Cadillac Owners Member
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    What I was thinking about doing is rebuilding my motor and getting it studded. Anyone know of any good stud kits? And is this a good idea

  12. #11
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: need a new motor!

    Studs and/or proper inserts are absolutely necessary to repair/strengthen all 20 cylinder block head bolt holes. Never try to use the old bolts and existing hole threads when doing a top overhaul on a Northstar.

    Either talk to Tim Carroll at www.carrollcustomcadillac.com

    or take a look at the NS300L inserts from www.huhnsolutions.com - they can be used with either a new set of GM head bolts or a set of ARP studs. www.arp-bolts.com



  13. #12
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: need a new motor!

    No need to "rebuild" the motor. All it needs is inserts or studs and new HG's.

  14. #13
    Manic Mechanic is offline Cadillac Owners Fanatic
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    Re: need a new motor!

    In studs vs. inserts w/bolts the main difference is that inserts can be installed with the engine in the car. To install the rear head over studs the engine needs to be removed. One way is a lot of work the other is a lot of work to the forth power.

    Vernon

  15. #14
    cadillac00 is offline Cadillac Owners Member
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    Is there a difference between studs and inserts?

  16. #15
    Manic Mechanic is offline Cadillac Owners Fanatic
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    Re: need a new motor!

    Yes, big difference in the technique to install the heads with the two choices with some difference in effectiveness.

    Inserts repair the hole with a over-sized threaded steel sleeve so that you can set the head back on and then run new factory style bolts down through the head bolt holes in the now positioned head and thread them tight into the sleeves that are threaded into the block themselves. Just like before with repaired bolt holes in the block to hold the bolts.

    Studs are like long bolts but with threads on both ends and no head. The bottom end threads into a new over-sized hole in the block with enough bolt end sticking above the surface to slide the heads straight down over them while they stick up. When the head is all the way down on the studs a little bit of each stud is sticking out of the bolt holes of the head, this is where you install a washer and nut onto it and tighten it down to clamp the head down to the engine.

    The big difference is that when the engine is in the car the back head sits close to the windshield and firewall. You can fit the head in there and then run bolts down through the holes but you can't put studs in the block and then fit the head over them and then down. The head will hit the car before the holes line up with the top of the studs, so the engine has to be out for studs so there's room to slide the head down over them on the back side.

    So why studs? They are actually a stronger clamp device and the tensile strain is spread better, also the threads in the block don't have to be loaded and twisted at the same time. Strongest, most durable, and accurate head clamping repair. Many of these engines have oil leaks down low that require engine removal to address so they get pulled for a reseal at the same time making studding an attractive option.

    So why bolts? They work fine for all but the most aggressive driver who needs all the strength possible (like me, I tear stuff up). A properly inserted and bolted head seal is stronger than it was new. You can drill out the block and install the inserts with the block still in the car meaning only the upper engine components have to be removed for the repair. Fine if there's no oil leaks or you can't deal with them anyway. On this car that saves a lot of work and time and leaves the car on wheels while the engine is apart. Less labor time when you're paying a bill for the work.

    Vernon

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