I recently purchased a number of used head bolts to replace my pitted ones. I noticed the ones I received have a recess on the head and are about 1/8" longer than my original ones I have a 1982 FJ40 w/ 2F engine. Could the 1F use a different bolt? They seem to want to hit bottom before they seat flush.
You can see in the picture below how they look different.
You can see in the picture below how they look different.