No announcement yet.

So, Just What is the Red Line on a Model A Engine?

  • Filter
  • Time
  • Show
Clear All
new posts

  • So, Just What is the Red Line on a Model A Engine?

    Someone obviously didn't know the limit.

    Rod and Piston Blow Up.jpg

  • #2
    My brother went to the New England meet a few years ago and commented on a young driver, who revved the holy hell out of his engine on each gear change. He said the engine made noises he was not happy with.
    Eastern Connecticut


    • #3
      That sure is a nice round bend in the rod. I have turned my overhead to 4500 rpms at the hill climbs. Never had that kind of damage. I use a rev limiter. Maybe they left the rod nuts loose.


      • #4
        Maybe that was leftover from cash for cars program :-(
        Didn't they rev the motors and put a powder down the intake too seize the motors?


        • #5
          Originally posted by Tom Wesenberg View Post
          Someone obviously didn't know the limit.

          Rod and Piston Blow Up.jpg
          Tom that is not a Model A rod. But you know that.


          • pAAt
            pAAt commented
            Editing a comment
            I bet that's where the term "Tom foolery" came from !! Brooklyn Park, Mn.

        • #6
          George, yes, I was thinking it might be a GM engine, but I'm not sure. This is the worst one I've ever seen.
          It would make a good "Hard Luck" plaque.


          • George Miller
            George Miller commented
            Editing a comment
            It has the pinch bolt for the wrist pin like a chev, but I do not see a rod dipper. Also it looks like a 4 ring piston, that is not chev. The rod looks more like a early Ford V8, but I do not remember them having a pinch bolt.

        • #7
          Even in my SBC racing days I have never seen damage like that. That motor must have exploded. Cant help but wonder what the crank looked like?


          • #8
            Looks like the nut came off the rod cap. then the bolt came out. It looks like there is no damage to that bolt, plus the nut is off the bolt. But who knows for sure. But I have never seen one bent like that.


            Related Topics


            • carolinamudwalker
              Engine rebuild
              by carolinamudwalker
              When I first got my car I took it to a local rebuilder to have the engine looked over. He took out some shims and buttoned things up. Several tours later I started to hear some engine noise and noticed about 3/16 of shiny crank shaft at the front of the engine. I dropped the pan and found all the connecting rod caps had tiny loose cotter pins. some were broken and in the oil pan.They served no...
              11-09-2017, 03:16 PM
            • Denis4x4
              Geneology of an A Engine
              by Denis4x4
              As an old hot rodder, I never consider a car is ever finished. To that point, here are the modifications that I've made to the A engine in my roadster over a 26 year period.

              The engine in my avatar was built in May of 1931 and rebuilt in August of 1992. At the 2015 Speedster Reunion, this engine in my Zipper roadster registered 60HP @ 3500 RPM's at the rear wheels. It's been in and...
              05-08-2018, 11:33 AM
            • Ray Horton
              I need serious experienced help with an engine problem
              by Ray Horton
              This engine, with only 4000 miles on it since rebuild, has always overheated and locked up when shut down after overheating, which is usually when driven at 45 or less for 30 minutes or more. (This did not and does not happen when driven under 35 and/or just around town for less than 45 minutes). I thought I had this problem fixed. But apparently not.

              Here is the history: On 3/16/14 I...
              07-01-2017, 01:12 AM
            • Fixitphil
              Connecting Rod Balancing
              by Fixitphil
              Again I'm new at this game and haven't seen much, but this situation does not seem right. Give me your input please.
              I'm getting a new engine so I tore the old engine down to see what it was like.
              1. I found one of the rods had a 1.5 in long weight welded inside the web. Nothing on the other side.
              2. Second rod had a 3" weight welded to each side of the rod.
              3. Third...
              You do not have permission to view this gallery.
              This gallery has 1 photos.
              08-12-2018, 12:03 PM
            • copgib
              I learned something new today
              by copgib
              Most of you know the story of my 1930 Model A. It was a barn find that had a siezed up engine. The seller which was my brothers church friend sold it to me and when he heard the engine was siezed, he offered me another engine that was in a 1929 Model A Basket case. I was told it had been rebuilt a few years earlier. My mechanic at the time confirmed it looked like it had been rebuilt after checking...
              07-29-2018, 07:00 PM
            • Jeff/Illinois
              Fuel additive cleaners for your gasoline engine
              by Jeff/Illinois
              This would apply to the Model A Fords just as as well as the new cars. It is a new 'take' on SeaFoam, SeaFoam was designed for two stroke engines according to Scotty Kilmer. Makes sense why it doesn't work as well on a four stroke engine. Check out this short video. I have used SeaFoam in all my cars for years, I'm switching over and trying something new like the Gumout. Mitch would be familiar...
              05-12-2018, 03:38 PM
            • Jeff/Illinois
              Ford Model A assembly line
              by Jeff/Illinois
              Nothing new, most of you have seen this before, but it is still fun to watch! Ford was good about documenting and filming their operations we're glad today that they did.

              That guy on the main line connecting the engine to the drivetrain must have been the Main Man he appears in still photos a lot too.

              08-09-2018, 03:18 PM
            • Curly
              Engine pans, yes or no?
              by Curly
              I haven’t been running engine pans. I got a set recently thinking I wanted to add them. After dry fitting them I’m wondering if I even want them on.
              1. Keep engine cleaner.
              2. Engine cooling, although I haven’t heard any conclusive evidence this is factual.
              3. Electrical ground, but this is not an issue for me.

              Do you run them? Why?
              12-12-2017, 12:11 AM
            • George Miller
              Roadster with 4 port Model A ENGINE
              by George Miller
              This is a engine that I put 4 intake ports in....
              07-22-2018, 04:33 PM
            • tbirdtbird
              Engine rebuilding
              by tbirdtbird
              Many Model A owners will need their engine overhauled at some point. There are great many questions that come up when this occurs. We strongly encourage owners to do careful research, as there seems to be a lot of shops that claim they know engine building, but few that really do. Questions such as, babbitt or inserts, ring gaps, piston-to-cyl wall clearance, piston choices, camshaft choices, proper...
              04-30-2017, 07:39 PM