During assembly of my stock -70 1.7 I was by hand wiggeling in the #4 exhaust lifter and it fell apart , no force at all was used. All other lifters seems OK, should be stock lifters.
Have been running this engine for the last 50000 of its 100000 miles, did not notice any strange sounds last time I started it which was a short run after sitting for 10 years.
Only thing I can remember as strange was one rocker shaft came lose for about 4000 miles ago...retightened it and everything looked OK...dont remember if it was this side though and if it could have any influence(?)
Looking at the broken ends (pic at the bottom) it seems that some of the fracture is hammered (but not wery much) so it might be that it broke during running.
What can the reason be and is this a known issue with Type4 lifters?
//Lars S