So I tear apart my Mach engine this week to start going through it. The previous owner who was a mechanic said it had a light tick on the drivers side. (30k miles ish)
I assumed it was the 7-8 cylinders head problem due to heat.
I pull the heads apart, no problems with the valves or seats. Ok good....
Rotating the engine there is a drag. Long story shorter, piston 8 has the lip below the pin missing, the rod is bent, and the piston is rubbing on the crank counter weight. WTF I thought.
So I pull apart the Marauder engine (60-90k miles) to check it and maybe use a piston and rod, and low and behold piston number 5 has the same problem and bent rod!!
So I've known a few people who have built and roasted a modified 4.6. Is this faily common?
In 2003 and 2004 4v NA engines ran a small dish, almost a flat top. Looking through the internet, earlier model 4.6 pistons that had a larger dish, did NOT have a lip below the pin on the side.
So this is the start of gathering information. Does anyone have any first hand experience with this or any speculations?
I assumed it was the 7-8 cylinders head problem due to heat.
I pull the heads apart, no problems with the valves or seats. Ok good....
Rotating the engine there is a drag. Long story shorter, piston 8 has the lip below the pin missing, the rod is bent, and the piston is rubbing on the crank counter weight. WTF I thought.
So I pull apart the Marauder engine (60-90k miles) to check it and maybe use a piston and rod, and low and behold piston number 5 has the same problem and bent rod!!
So I've known a few people who have built and roasted a modified 4.6. Is this faily common?
In 2003 and 2004 4v NA engines ran a small dish, almost a flat top. Looking through the internet, earlier model 4.6 pistons that had a larger dish, did NOT have a lip below the pin on the side.
So this is the start of gathering information. Does anyone have any first hand experience with this or any speculations?