The eagle name --- saved again..

 

Wow that sucks. Hope it all works out.

 

I don't see that crack allowing enough coolant in at 5K to cause the cylinder to go solid. The cylinder would have to ingest enough water in two stokes (down and up) to fill the combustion chamber. The water coming in is under pressure, the air is under pressure and part of the time the piston is blocking the flow. It seems to me, until the engine was stopped, the best you would have is water injection.

 

It doesnt take a lot of water, water can not be compressed in the combustion chamber so even a little is too much...

 

The smallest amount theoretically able to hydro-lock an engine would be just slightly greater than the volume of a single cylinder when the piston is at top dead center.

Which if my math is right -- is only about 50ml.

 

Correct, combustion chamber in cc (or ml) + dish.

43cc + 6cc dish = 49 + ....

 

sad to hear this...but whats a eagle rods?

 

they take eagles, and they puree them. they take this mixture and then cast it into connecting rods. this feather, bone and flesh alloy is actually stronger than titanium.

 

So basically your motor took a shot an snapped. Happens to me all the time, lmao.



A shot is 50ml

 

From the fuzzy picture I can't see much, but if that is a crack then sure, this is a bad hole. However, at 5000 rpm (per the OP) for the combustion chamber to fill the crack would have to be flowing at at least 60 gallons per minute and part of the time the piston would be blocking this flow and sending it to the pan. This if all the water was being ejected through the exhaust valves. Some water would stay but still this requires a lot of flow.

 

That assumes the cylinder completely cleared every stroke.

 

well it couldve been as simple as op got a friday or monday built set of rods. Its a crap shoot, and not just limited to eagle rods. Looks how some people with ixs had an issues with cams snapping the mivec cam gear. Parts break, it happens when extreme temps and pressures get put on metal. Can happen to anyone of us on anyday. Now to you experienced engine builders, with the rods like these known to break, would it be worth if it op did buy another set of eagle rods, to have them cryo treated to have the metal strengthened on a molecular level. Im just thinking that could help a future builder, granted it is some money to have it done, but to take a steel rod and do that wouldnt you be increasing longevity due to the fact that the rods can take a beating even more.

 

better off buying better rods than sticking money into questionable rods.

 

guys i thought it was determined it was a crack in the cylinder wall that caused this, not the rod.

 

Thats true I guess, I havent had one issue (knock on wood) almost 40k on my engine, with the eagle rods, granted im not at 600-800 hp yet,but at 400ish hp it seems to be doing quite well so far.