FRAMING JOHN DELOREAN - ON VOD www.framingjohndeloreanfilm.com
Page 3 of 13 FirstFirst 1 2 3 4 5 ... LastLast
Results 21 to 30 of 129

Thread: 3.0L Megasquirt w/ EDIS: Headers running at different temps?

  1. #21
    Senior Member
    Join Date:  May 2011

    Location:  Southern MA

    Posts:    973

    My VIN:    767 (3.0L EFI/EDIS)

    I took the valve cover off today, and completely failed at reading the engine rotation vs the valve position. It felt like I was reading 60 degrees off for TDC on cylinder 1, but I can’t decide if I’m just reading it wrong or if it has something to do with the BAC EDIS firing order Josh set up due to the position of the crank sensor relative to the missing tooth on the crank pulley gear (unlikely, although I did have to take a timing gun reading from cylinder 3 due to this rotated firing order, which does perfectly match what TunerStudio is reporting). I’m pretty sure the mark on the pulley is right, though, and I just don’t know what I’m doing.

    Anyway, I decided to look at something I did understand, the position of the two marked links on the timing chain relative to the mark on the can sprocket. That does appear to be one tooth off.



    I guess I’ll take the timing cover off tomorrow and redo the valve timing.

    Thanks

    — Joe

  2. #22
    LS Swapper Josh's Avatar
    Join Date:  Mar 2013

    Location:  Illinois

    Posts:    2,438

    My VIN:    11408

    Club(s):   (DMWC) (TXDMC) (DCUK) (DOI)

    Glad you figured something out. Not surprised with the result.
    Does it look like the chain was rubbing on something?

    Supercharged 5.3L LS4 + Porsche 6spd
    [email protected]
    lsdelorean.com
    I am not affiliated with Delorean Midwest in anyway.

  3. #23
    Senior Member
    Join Date:  May 2011

    Location:  Southern MA

    Posts:    973

    My VIN:    767 (3.0L EFI/EDIS)

    I think that might be Right Stuff that seeped in from the timing cover gasket.

    A bit more concerning is that when I pulled the timing cover this morning, a piece of metal fell out. It seems to be part of one of the bottom driver’s side screw holes for the timing cover, in the lower crankcase (so, it’s from the 2.8L engine)

    I think I can get away with this by filling the screw hole with Right Stuff before I insert the screw. There are plenty of threads left to firmly hold the bolt (I tested it), and there are so many screws on the timing cover that it seems like it should hold. I’ll have to watch for oil leaks just the same.

    Seems I have bad luck with engine castings.





    — Joe

  4. #24
    Senior Member
    Join Date:  May 2011

    Location:  Southern MA

    Posts:    973

    My VIN:    767 (3.0L EFI/EDIS)

    Actually, I think those scrapes on the chains are form the chain guides from when the oil pump wasn’t working. They seem to line up pretty well.



    I don’t think it’ll be a problem with the now-working oil pump.

    — Joe

  5. #25
    Senior Member Bitsyncmaster's Avatar
    Join Date:  May 2011

    Location:  Leonardtown, MD

    Posts:    8,994

    My VIN:    03572

    That looks like a crack on that black casting bottom right of your last photo.
    Dave M vin 03572
    http://dm-eng.weebly.com/

  6. #26
    Senior Member
    Join Date:  May 2011

    Location:  Southern MA

    Posts:    973

    My VIN:    767 (3.0L EFI/EDIS)

    Quote Originally Posted by Bitsyncmaster View Post
    That looks like a crack on that black casting bottom right of your last photo.
    Sorry, I’m not quite sure where you’re looking. I don’t see a crack in the photo, and I don’t see anything on the engine itself. I do still have to scrape off the gasket; is that what you’re seeing, or am I just looking in the wrong place?

    The 2.8L lower crankcase isn’t available anymore, so I’m not really sure what I’ll do if that’s junk. Maybe I’ll ask Josh how to do an LS4 swap.

    Thanks

    — Joe

  7. #27
    Senior Member
    Join Date:  May 2011

    Location:  Southern MA

    Posts:    973

    My VIN:    767 (3.0L EFI/EDIS)

    Also, that “off by a tooth” photo I took isn’t looking at the right mark on the cam, and I’m fairly sure the position of the chain is irrelevant if you don’t know the position of the keyway on the crank as well. Point being, my sprocket photo proved nothing. I’m sill redoing the timing, now that I have everything apart. It certainly won’t hurt, but I’ll have to wait until next weekend to put it back together, when I have new gaskets.

    Correct mark aligned with the timing chain attached. The other mark is in the lower right.



    — Joe

  8. #28
    Senior Member Bitsyncmaster's Avatar
    Join Date:  May 2011

    Location:  Leonardtown, MD

    Posts:    8,994

    My VIN:    03572

    Quote Originally Posted by jangell View Post
    Sorry, I’m not quite sure where you’re looking. I don’t see a crack in the photo, and I don’t see anything on the engine itself. I do still have to scrape off the gasket; is that what you’re seeing, or am I just looking in the wrong place?

    The 2.8L lower crankcase isn’t available anymore, so I’m not really sure what I’ll do if that’s junk. Maybe I’ll ask Josh how to do an LS4 swap.

    Thanks

    — Joe
    It may just be the photo. I was looking at the black (think it's your motor mount) right where the large bolt goes into the engine block.
    Dave M vin 03572
    http://dm-eng.weebly.com/

  9. #29
    Not a DeLorean Guru
    Join Date:  May 2011

    Location:  Rochester, NY

    Posts:    2,405

    My VIN:    01049

    To do an LS4 swap, simply open wallet and let money fall out.
    -Mike

    My engine twists my frame.

    1981 DeLorean, Carb LS4 swap completed
    1999 Corvette, cam/headers/intake manifold, 400 rwhp
    2005 Elise, stock
    2016 Chevy Cruze

  10. #30
    EFI'd dn010's Avatar
    Join Date:  Jul 2011

    Location:  Florida: Pinellas County

    Posts:    2,092

    My VIN:    5003 Never placed Concourse

    Club(s):   (DCF)

    How do your timing chain guides look?
    -----Dan B.

Page 3 of 13 FirstFirst 1 2 3 4 5 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •