The reason I ask is because I found one while fixing my oil pan gasket. When I assembled the engine almost 2 years ago, the squirters did not touch the crank...
If I remember correctly, I think there was about .050"-.100" clearance between them and the counterweights.
After inspecting the other 3,I found they were ALL barely getting "kissed" by the counterweights.
Any ideas as to what caused the clearance to change?
The squirters were all torqued down, oil pressure is still ok thank god. It broke after the little pressure valve. All of the bearings were inspected about 10k miles ago and looked flawless.The max rpm this engine has seen is 9400. 89mm stroke if it matters. I thought harmonics/imbalance at first,but they touch when cranking over by hand.
Then I though maybe it has excessive endplay(thrust) but nothing really jumps out at me. The only other thing i can think of his rod stretch on the downstroke @high rpms.The skirt is coming down too far and tapping the squirter down causing it to hit the crankshaft. I should have inspected the pistons better now that I think about it...
Anyways what clearance do you guys run w/ no problems?
Ill be babying it until I swap in the donor engine hopefully this month

 

Seems to be a few people that came across this problem after searching 2 pgs. archives...
The pistons GOTTA be pushing the squirters to bend down and be hit by the crank and eventually break off. I know for a fact they had ATLEAST .050" clearance upon assembly. Now they are actually touchin the crank counterweights!

Someones gotta have the answer, This is Honda-Tech

 

no one knows? I guess Ill just plug them up on the next build even though I really wanted to keep them

bump for some answers/ideas

 

wow. bump for a unique problem that deserves an answer.

 

I dont know about hondas, but on the industrial engines that I work on there needs to be atleast .020" clearance.

 

I remember back in the day i found 2 of them in the pan. They broke right where your's broke. I put in 4 new ones and i dropped the pan about 20k later and i didnt find anything. Im stumped.