It's been years since I was active in cruiserdom other than oit crewing with Canguro Racing but after my 1976 fj40 had been parked for 19 years I'm finally making progress in getting her back on the road. What I thought was simply a "rings didn't seat" issue on my motor with 2k miles on it turned out to be a poor machine job on the block. I didn't know any better at the time.
In the end I purchased a 1975 2f that the PO said just had a head job done on it. The compression was supposedly about 130 across the board but it was a $500 motor. I did a leak down on it tonight and every intake valve leaked, so off with it's head.
What I found was a 61030 head on a block with .020 flat top pistons. From my research this is a no go as the 61030 is an open chamber head and with the flat tops, there's no power. So what's the right option? New domed pistons? Mill the head down? Find a different head? I'm squirreling pretty hard on this poor girl as I ripped the body off the frame while she wasn't looking.
In the end I purchased a 1975 2f that the PO said just had a head job done on it. The compression was supposedly about 130 across the board but it was a $500 motor. I did a leak down on it tonight and every intake valve leaked, so off with it's head.
What I found was a 61030 head on a block with .020 flat top pistons. From my research this is a no go as the 61030 is an open chamber head and with the flat tops, there's no power. So what's the right option? New domed pistons? Mill the head down? Find a different head? I'm squirreling pretty hard on this poor girl as I ripped the body off the frame while she wasn't looking.