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It looks like Crane is not the valve train component for me!

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It looks like Crane is not the valve train component for me!

Old 10-02-2014, 09:44 PM
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I've been told several times over the past couple years to steer clear of their roller lifters and rockers from friends and two engine builders who saw catastrophic failures such as this.
This happening @ 100 hours sucks bigtime and happening in a drag car with very few passes sucks just as much or more.
We need to hear about situations like these to stay more informed.
I'm sorry to hear about your misfortune and wish for you many hundred of hours of enjoyment from your new build.
See ya
Kelly
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Old 10-02-2014, 10:23 PM
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Originally Posted by SB
You referring to stud girdles ?
Yes, stud girdles.
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Old 10-03-2014, 08:17 AM
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Originally Posted by lil red
See where it says .080 wall pushrods.... If you have spring seat pressures in the 160-180 range and 450+ open they could be dancing around like the inflatable guys outside used car lots. Add that to a mediocre lifter and you have your failure.
The man speaks the truth. When those pushrods start flexing, it causes thee valvetrain to become unstable and unleashes all kinds of harmful harmonics that pulse all through the valvetrain and fatigue the parts. I have a set of 0.120 wall Manton pushrods that have never been run - I'll sell them at half cost if they will end up working for you. PM me if interested for details.
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Old 10-03-2014, 08:20 AM
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Originally Posted by fountainboater
Yes, stud girdles.
A decent amount do...but you are right, most do not.
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Old 10-03-2014, 11:14 AM
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Originally Posted by Budman II
The man speaks the truth. When those pushrods start flexing, it causes thee valvetrain to become unstable and unleashes all kinds of harmful harmonics that pulse all through the valvetrain and fatigue the parts. I have a set of 0.120 wall Manton pushrods that have never been run - I'll sell them at half cost if they will end up working for you. PM me if interested for details.
So Randy, Is it possible your engine builder used the wrong parts and not the Crane parts Mercury racing assembled originally
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Old 10-03-2014, 11:34 AM
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Also the other work looks like it had issues so maybe the lash was loose
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Old 10-04-2014, 12:41 AM
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[ATTACH=CONFIG]530308[/ATTACH][ATTACH=CONFIG]530309[/ATTACH][ATTACH=CONFIG]530310[/ATTACH][ATTACH=CONFIG]530311[/ATTACH][ATTACH=CONFIG]530312[/ATTACH][ATTACH=CONFIG]530313[/ATTACH]some pics of the cylinder walls & piston that the damage happened to. The date code on the piston says 2008, these engines were sold to me as brand new 2012 builds. The mystery gets deeper.
Attached Thumbnails It looks like Crane is not the valve train component for me!-20141003_142534.jpg   It looks like Crane is not the valve train component for me!-20141003_142152.jpg   It looks like Crane is not the valve train component for me!-20141003_142105.jpg  

It looks like Crane is not the valve train component for me!-20141003_142119.jpg   It looks like Crane is not the valve train component for me!-20141003_142318.jpg   It looks like Crane is not the valve train component for me!-20141003_142331.jpg  

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Old 10-04-2014, 12:47 AM
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I would be very interested in piston to wall clearance and ring gap. I doubt all of that scoring is due to the lifter failure.

Suffice to say, it looks like mistakes were made.
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Old 10-04-2014, 01:02 AM
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[ATTACH=CONFIG]530314[/ATTACH][ATTACH=CONFIG]530315[/ATTACH]Mcprodesign, these are not merc engines. Sorry for any confusion. These engines are Bullet Engines 650hp normally aspirated series 540 cid. They are Merlin III blocks, this one has a Callies compstar crank, Manley H beam rods, Manley flat top pistons, Edelbrock marine rpm heads, Crane cam, & lifters, Crower pushrods, & Scorpion rocker arms. At least that is what the part #s are telling me.
Attached Thumbnails It looks like Crane is not the valve train component for me!-20141001_133338.jpg   It looks like Crane is not the valve train component for me!-20141001_134015.jpg  
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Old 10-04-2014, 08:54 AM
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Just another reason I have built my own engines for the last 40 years. I have made mistakes and paid for it. But I learned from those mistakes. I am in the process of building a 598 right now.
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