Recent content by Jrp79

  1. J

    What year 4.2 engines are direct replacement

    This applies to all 02-05 4.2s? 02-05 7x, P10 PCM 06-07 7x, P12 PCM 08-09 58, E67 ECM/T42 TCM 2003 will go into a 2006 as long as the 2006 PCM and harness is retained. You'll have to move the ECT sensor, swap fuel rails, and swap your AIR solenoid over. Otherwise bolt in.
  2. J

    What year 4.2 engines are direct replacement

    Should have mentioned only reason im checkin on difderent years is the owner can get a 02 tb 4.2 and a 04 envoy 4.2 both with good motors for 400 ea.
  3. J

    What year 4.2 engines are direct replacement

    Hey guys. Back again. Trailblazer ext,same year 06. Motors out. Owner wants to have a used put in. Can i use a 02-05 if i swap over the fuel rail from the 06. What else would have to be swapped. I know i looked but i want to be sure so i can go over everything with the owner. Ps. My 06 is up...
  4. J

    What year 4.2 engines are direct replacement

    From what I understand only the 06-07 is a direct bolt in?
  5. J

    What year 4.2 engines are direct replacement

    Got a 06 4.2 ll8 and was wondering what year engines are a direct replacement. Is it 06-09 the same.
  6. J

    Timing chain guide tap

    Alright took the head off and yup all 14 bolts broke so im having the machine shop drill them out, turn the crank and recondition the rods. Here are pics of the valves and cylinder walls. None of the rings on any of the pistons were froze. And very little marking on the walls,can still see the...
  7. J

    Timing chain guide tap

    Here are some quick pics i just snapped of the cylinder walls
  8. J

    Timing chain guide tap

    Ok. Are the ebay oil pump kits good too(i haven't checked mine out yet)?and what are a good brand of main and rod bearings?engine tech has them too.
  9. J

    Timing chain guide tap

    Are all connecting rods the same for the LL8 engine? And are pins press fit or floating? I took a quick look at the cylinders and didnt appear to be any damage. Ill take pics the best i can of the cylinder walls and post them.
  10. J

    Timing chain guide tap

    I haven't gotten the new timing set yet... are engine tech parts good? Just for the cloyots chain,guides and tensioner is 120, the whole set is 250. Engine tech has the complete set for around 80
  11. J

    Timing chain guide tap

    There were no dark marks on the chain so i aligned it as close to the image and marked all the links on the chain and timing marks on the sprockets with white paint. I did take all the valve train parts out. B12 is easier to get then the top cleaner.
  12. J

    Timing chain guide tap

    Is there a product comparable to acdelco top engine cleaner? How is crc or seafoam engine cleaner?
  13. J

    Timing chain guide tap

    Yea i seen alot of threads about head bolts.. So if i take acdelco foam engine degreaser and spray a good amount through the spark plug holes and let it soak for a min of 3 days? Thats proven to loosen up the compression ring?
  14. J

    Timing chain guide tap

    Ok so at this point it would be wise to take the head off and inspect the pistons and cylinders and replace the rings regardless?
  15. J

    Main cap and rod bolts

    Im taking my time rebuilding. So far its all going good. All my questions have been answered. This forum has been helpfull. Just wish i would have taken pics of all the steps and parts of disassembly so they can be posted for future builds.

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