Isx 15 cm2250 problems

[Hammerhead]

(08-27-2017 )Rawze Wrote:  

(08-27-2017 )Pdxt Wrote:  Hey guys, looking to see if any other guys have issues with the exhaust valves "bridges" breaking? I've had two break on me in a month, fixed beside the road my self, this last time I almost lost the valve as the keepers couldn't take it. Half was already out, this was fun to fix beside the road?
Any ideas or help?
More guys having this issue?

HOLY SMOKES BATMAN!!! --- Is it me, or does those exhaust rockers look way out of adjustment>? --- It also looks like you have a bent exhaust valve for that cylinder, or is that an optical illusion?

What are you adjusting the clearance for each of the valves to?

It could be that at some point, the thing may have dropped a valve and bent the stem during engine braking. Bad programming or abuse can make one drop valves or even have other issues like detonation, causing one to want to throw a cross-head.

Is that thing deleted? -- If so, who did it? --

What is the engine brake detent clearance? -- This can reveal how recessed the valves are in the head...
reference: http://rawze.com/forums/showthread.php?t...66#pid9466

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Also, What is the engine history? -- Much More details pls.

Agreed, those adjuster screws are WAY too far out in my little experience.
The closer exhaust valve appears slightly askew to me as well. Look at the top flat surface of that valve's stem too Rawze, it looks hammered to me.
Something is defiantly not right.
The valve spring do not have even remotely close enough spring force to ever break a crosshead.