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  1. Lonnie

    Tight spot rotating engine

    The truck was wrecked & the intercooler was destroyed & the tubes were ripped off before I bought the engine. The turbo is not hurt. I disassembled it to check everything. I'm assuming something was injested in the open intake bypassing the intercooler either during the accident or from...
  2. Lonnie

    Head Gasket Question

    Thanks for all the info. I was worried that I could not find any info & the dealers selling the stuff always seem to know the least. I was only buying 1 side & needed to match the other. I did find some info on the "grade" of the gasket It goes as follows: 1 is Grade A 2 is Grade B...
  3. Lonnie

    Head Gasket Question

    GM lists 3 head gaskets for the LLY engine...... Grade A, B & C. What is the stock replacement? What is the difference? My parts guy isn't real helpful. Thanks, Lonnie
  4. Lonnie

    Tight spot rotating engine

    Well, I tried a little upper cylinder lube to see if there was a difference, but no change. After some more hesitation, I decided to risk wasting money on bolts & gaskets & removed the head. I'm very glad I did. Inside (on #4 piston) was a small piece of metal (7/16" x 3/16" x 1/32"...
  5. Lonnie

    Tight spot rotating engine

    Thanks everyone for all the info. I tried to see if it was the oil pump & water pump, but it is hard without taking the whole front of the engine apart. Oil pump gear appears to be half the size of the crank (looking up from the bottom). That would make it spin double engine speed. The...
  6. Lonnie

    Tight spot rotating engine

    Currently the engine is stripped of all accessories. The waterpump is still installed. Any idea how it is geared to the engine... meaning does it run 1:1 with the engine? I pulled the injection pump to be sure as well. I realze the piston is very close to the head surface & it would...
  7. Lonnie

    Tight spot rotating engine

    Murphys law is at it again. I just noticed a tight spot while turning my engine over. I never noticed it before when I pulled the converter bolts. It is at #1 TDC, which is also TDC for #4. It happens with the timing marks 1/4" on either side of TDC. I'm nervous now & have to find the...
  8. Lonnie

    Efi 7.5.3

    These links do not work for me. I also cannot find them on the EfiLive site. Anyone else have this problem? Were these links removed? Lonnie
  9. Lonnie

    I dropped my nut

    Are you saying it is in the downpipe after the turbo? If so, it cannot get back to the engine. Just rev it up & blow it out the tailpipe. Don't feel bad, I dropped the cam retainer bolt in the oil pan, doing a cam swap on a on a customers Z06 Vette. I played magnet fisherman for 2 hours to...
  10. Lonnie

    Maximum lift pump pressure?

    Mike L. has talked with me probably more than he wants to lately. His efforts have been immensely helpful, so hopefully he will chime in as I do not want to bother him anymore than I have to. Although, I would like to know the max safe/beneficial pressure to design for...
  11. Lonnie

    Maximum lift pump pressure?

    Aren't the black pumps rated for 14#?
  12. Lonnie

    New A/C compressor!

    Based on the pumping volume & boost level desired, this charger would need to be run significantly slower than it would be on the Cobra engine. The Duramax pumping volume at 4000rpm has about 80% of the pumping volume of a 281CI 4.6L at 7000rpm. Couple this with the lower boost (4#) vs...
  13. Lonnie

    New A/C compressor!

    Pat, Are you putting this between the CAC & the engine?
  14. Lonnie

    Maximum lift pump pressure?

    As for GPM, the objective would be to design it for sufficient capacity to hold desired pressure at peak power levels. I ask because I'm trying to layout my pump system. I routinely build fuel systems feeding 600 to 1000+rwhp cars while holding over 70psi fuel pressure for fuel injected...
  15. Lonnie

    Maximum lift pump pressure?

    What are the guidelines for lift pump pressure? If I understand things correctly, you can have idle issues if the pressure is set too high..... but does increasing the pressure still help with rail pressure at full throttle? Obviously negative pressure at the inlet will restrict CP3...
  16. Lonnie

    '82 Duramax Swap Pictures

    Thanks guys, I'm deleting the entire EGR system. Planning on cutting the "T" off of the exhaust tube & putting in an EGT bung. The engine/trans is painted with "cast coat aluminum". It is about the same color as fresh bead blasted aluminum, but with less maintenance & a little shine. I...
  17. Lonnie

    '82 Duramax Swap Pictures

    Just a followup post on a few items. Mike L. has went above & beyond in his efforts to help me out. If you need any trans help, get in touch with him, he has provided a level of support that you just do not find these days. BlueMax, thanks for the link, I ended up buying that ebay part...
  18. Lonnie

    '82 Duramax Swap Pictures

    Thanks I appreciate it... I'll talk to you tomorrow. Lonnie
  19. Lonnie

    '82 Duramax Swap Pictures

    I'm watching that on ebay, but GM parts direct shows them new (upper pan & pickup) for about $140 shipped.
  20. Lonnie

    '82 Duramax Swap Pictures

    I was originally going to remove the pan after the engine was installed so I did not have to worry about scratching it. But, the rear pan bolts are behind the flywheel, so that was not going to work. So, I spent a lot of time grinding, masking & painting the pan on the engine yesterday for this...
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