Eric Gibby
New User
Bought a 1947 8n last week that the engine was making a slight knocking noise towards the top of #4 cylinder. It sounded about where the lifter is located and my initial thought was that the valve was way out of adjustment (if adjustable). According to the guy I bought it from, the engine was professionally rebuilt about 10-years ago and hadn't been used very much since. He said it started making the noise last year and they parked it and hadn't ran it since. I checked the valve adjustment (it does have adjustable lifters) and it was good. So I pulled the head to see what was going on inside. I found that there was no sleeve in #4 cylinder. The cylinder wall looks good with no scaring or evidence of wear. I pulled the oil pan and found the sleeve in pieces. Also, when I turned the crank with the head removed, the sleeve in #2 cylinder pushed out. Is this a common problem? Can I just replace the broken sleeve in #4? Are the sleeves a press fit or is there an adhesive that holds them in place. This is the first 8n that I have owned and am not familiar with them. Any help would be appreciated.