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  1. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    The gasket did just cover the exhaust holes. I suspect you’re correct about this being a formal redesign!
  2. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    Oh that’s interesting. My 75 exhaust manifold had a gasket between the head and manifold, but has the ball and socket style connection to the exhaust system, not requiring a gasket. Possibly a different set of manifolds?
  3. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    Hmm, I didn't know that. Was there some sort of sealer applied between the parts? When I removed it to remove the control valve, there was a gasket in place, which is why I replaced it.
  4. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    I had the manifold off recently and removed the heat control valve completely and had the holes welded shut.
  5. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    Update: re-assembled the valve train, torqued properly. Performed a compression test on 2, 4 and 6. all came back equal, so that was hopeful. I pulled the exhaust manifold and sure enough. bad spot on the gasket at # 4. So that's the noise I'm sure. I happen to have 1 manifold gasket, but...
  6. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    I’m going to level set. Reassemble everything and do a compression check. Then pull the exhaust manifold if compression is ok. Replace oil and go from there
  7. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    Oh, also of note, it doesn't smoke either. Also, could a diluted oil cause these symptoms? I believe the oil is diluted with gas (this happened before trying to work the bugs out of the efi system).
  8. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    I actually do have a small cam and looked into the cylinder, but didn't see anything crazy. Piston did appear to have 2 bevels or something along the front edge of the piston (towards front of engine) But they seemed more like they were made that way vs damage. I'm not sure what stock 440...
  9. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    as a test I repeated my cylinder pressurizing test on #2 cylinder. The air escape was almost inaudible. So #4 is definitely dropping pressure really quickly. I just can't tell from where, not intake, not exhaust, not radiator and not crankcase (that I'm able to discern) Any thoughts before...
  10. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    I did something like this. I loosened the rocker shaft to unload the valve springs. pushed air in and it wasn't coming through the intake or exhaust. I assume the slowness was air bypassing the rings
  11. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    Ok, so I pushed on the springs while idling (not easy) but the sound didn't change. I couldn't see any movement either.
  12. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    I'll give that a shot, what should I be looking for? The springs don't appear broken.
  13. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    All the time, hot, cold, idle, driving rpms. Doesn't seem to change at all (other than quicker/slower per rpm)
  14. DC118us

    440 engine making a noise that sounds like an exhaust leak, but no leak is found

    Hi all, It's been a long time since I've been on here. My 1975 T&C wagon, stock 440 is giving me trouble. I've spent the last 1.5 years (not a typo) working on a holley efi install. Finally got all my issues resolved and it was finally running right. I took the family on a trip to the...
  15. DC118us

    Has anyone ever won a car show with their C body?

    I've had my wagon to numerous local shows, most people just keep on walking. I like the group that remember riding in the 3rd row seat, big family road trips, helping dad load lumber for a home project, those sorts of things. Never won a trophy with it, never expect to, but I always enjoy the...
  16. DC118us

    1975 Wagon, 440 mostly stock charging system not working.

    Unfortunately I don’t know. I only know when it’s disconnected the car won’t charge.
  17. DC118us

    1975 Wagon, 440 mostly stock charging system not working.

    I believe you must be right. That got power to my vr and alternator field. Plus it must feed dash lights and low beam headlights too.
  18. DC118us

    1975 Wagon, 440 mostly stock charging system not working.

    Big John! You were 100% correct. I did disconnect something to route my fuel line along the firewall and didn’t reconnect it! I went back through everything and found this, with both plugs disconnected. Thanks again for the help. Turned out to be a loose nut behind the wrench! Lol
  19. DC118us

    1975 Wagon, 440 mostly stock charging system not working.

    Ok this all makes sense with what I was expecting. I need to back track to try and figure out why I have no power at either the vr or field wire. Also not sure if it’s related but I don’t currently have low beams or dash lights. So something has definitely changed since last summer. Totally...
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