NMB2 drive video with gauges
- Thread starter Diesel JD
- Start date
So, with what I see and the explanation,
The "ramp" that normally leads from the hole in the pre-cup, to the reliefs in the piston, where the fire starts normally, since the ramp was on the other side of the cylinder, and not where the pre-cup normally "sprays" fuel and fire into and acting like a "down ramp" , once the fuel and flame-front got the the reliefs, it acted as an "up ramp" pushing the combustion force at the gasket, rather than toward the center of the cylinder like normal?
The "ramp" that normally leads from the hole in the pre-cup, to the reliefs in the piston, where the fire starts normally, since the ramp was on the other side of the cylinder, and not where the pre-cup normally "sprays" fuel and fire into and acting like a "down ramp" , once the fuel and flame-front got the the reliefs, it acted as an "up ramp" pushing the combustion force at the gasket, rather than toward the center of the cylinder like normal?
icanfixall
Official GMM hand model
Wow.. Thats a great pic Russ. Sorry to see something like that happen.. A little information about the top of an idi piston... Those reliefs are not for the valves. Thay are way too small. They are called a Recardo cup and are there only for the flame front and combustion out of the percup chamber. They direct the flame front away from the cylinder walls and gasket fire ring. It takes a big person to admit they made a mistake. A bigger person is able to say those 6 magical words... I'm sorry I made a mistake...
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