2003 Head Gasket Repair - Page 11
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Northstar Engines and System Technical Discussion Discussion, 2003 Head Gasket Repair in Cadillac Engine Technical Discussion; Oh cause I saw a video where some guy did the left bank while it was in the car.idk know ...
  1. #151
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    Oh cause I saw a video where some guy did the left bank while it was in the car.idk know what I'm going to do with this car , I'm definitely not paying $3000 to fix it I'll try it my self with my fsm.I actually found a 03 sts engine with 75,000 miles for $750 but it's way out in the boone docks which I would drive and check out.if I was to drop another engine with the same Vin 9 would it have to be reprogrammed etc...?

  2. #152
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    And what would swapping the engine accomplish? It could have the same issue yours has, and more. And you won't know until it's I stalled and running in your car.

    If you're able to remove the engine, inserting/studding it isn't all that much more work.

  3. #153
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    Yes it would be Taking a chance but a 03 with 75000 miles for $750 yea I would have to drive out in the country to check it out. .I was just saying since supposedly 03 chances of having Hg bolts pulled are much slimmer.I'm just asking cause that's only a couple hundred more than the stud kit would that be a better just cause of the lower miles.I know I don't know what's the deal with any used engine I was just Making suggestions.my engine starting to make a Loud tapping/knocking noise that does go away so far when it warms up some , maybe it's cold carbon knock?

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    Some '04's, all '05's+. Those are the years that are most unlikely not to have issues. An '03 is just as likely to have a failure as an '00, and mileage is irrelevant.

    The engine is $750? Inserts are cheaper than that.

  5. #155
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    I thought 02-03 they came out with longer bolts? Cause in northstar technical engine performance the 03 is pretty low percentage fail 04 was really low and 05+ was pretty much non existent? Does the timeserts come with the drill bit ,taps,etc. . Like with the kit with suregrips?

  6. #156
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    Longer bolts and changes to the block casting process came in '00.

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    Re: 2003 STS coolant leak (possible crossover leak)?

    does the timeserts come with the drill bit ,tap ,the plate thing t make sure you drill in straight ,etc ..

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    Re: 2003 STS coolant leak (possible crossover leak)?

    Yes, the kits come with all that stuff. You just need to buy extra inserts.


  9. #159
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    Is time serts what GM uses cause I thought I read before that people would it done at a dealership and a lot of them would fail soon maybe in thinking of something else.? Can you change the title of the thread to 03 Seville head gasket repair or something to that sort and you can probably merge my misfire thread since they are probably related , thanks.

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    Re: 2003 STS coolant leak (possible crossover leak)?

    Timesert is the official GM repair. Some of the earlier ones with the same (fine) thread pitch where failing. They then went to the coarser '04 thread pitch. You want to be sure to use the coarser thread pitch. I believe that may now be the only one Timesert sells, but I wouldn't swear to it. The other option is NS300L inserts. They are a coarse thread. Then of coarse there are the studs.

  11. #161
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    Ok thanks I'll look through each of the sites then decided from there.what's the best way to take the engine out dropping the cradle with shocks and everything attached or up through the hood?I have every thing at my work to do it either way ,I got pallets , pallet jacks fork lifts,etc...we even got a hydraulic lift but I probably won't be able to use that cause there is always a company truck on it.but the fork lift and pallet jack will come in handy.

  12. #162
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    Re: 2003 STS coolant leak (possible crossover leak)?

    All the reports I have heard say out the bottom is far easier. Can't speak from experience and doubt I ever will.

  13. #163
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    I wonder why the time sert kit only comes with ten inserts you have to buy the other ten separately.

  14. #164
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    Re: 2003 STS coolant leak (possible crossover leak)?

    So they can make more money.

  15. #165
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    Lol that's true.

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