Recent content by heedicus

the engine runs well with no pinging after it was rebuilt and in the vehicle. I drove it for about 30 miles and as I went up an incline the pinging began. I beleive we determined the pinging was from the piston failure. the tolerance on the old engine before it was rebilt was 4 hundreths of an...

So I am still trying to figure out why I am getting 4 point piston failure. The engine just got rebuilt a second time and when driving the rig under a load it had 4 point piston failure in two of the pistons, but I didnt drive it as long. We have since pulled the engine thinking the mashinist...

Ok Thanks all for the replies, I do have a few more questions... I have some more info/ So i am having the 4 point piston failure on 2,3,4,5. does anyone know what the tolerance is sopposed to be between the piston and the sleeve? I think what could have happened was he bored it out to big...

Yes, I have ran premium no change, and I will try backing off the timing. And I am interested in the AFM idea so shoot me whatever info you think may help... My concern is last time I heard this noise ,I ended up with 4 point piston failure. If i back off the timing and this pinging stops we...

So I have a 91 Landcruiser and I am in the process of rebuilding the engine. I got this rig from a friend with 250,000 original miles on this engine. It originally had low compression in the number 4 so we decided to rebuild it. I have had the stock engine professionally rebuilt but when I got...