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Rebuild Time

Wow! That's one Heck of an illusion. That is what I kept thinking was the valve smash mark, and why I was concerned about the entire valve train.

If it is a build up occurring there, then why is the valve (looks like exhaust) causin part of it to stay clean? I remember that on Devildogman's pics- but thought that was camera flash odd the cylinder walls.
 
For reference now that I look closer: The carnage thread where my engine ate a worm clamp has clear valve marks in the pistons as the debris held the valves open.
 
That cyl. was wet, the injector spray may have washed the carbon off in that area.
 
How in a cracked web main does the lock/stitch bring back the structural aspect? I can see how it would fill a crack in a water jacket, but not how it would on a web main. I'm not understanding the transfer for force in the repair.
 
Look in their website Leroy, the threads are not normal. They have a vertical pitch, so when the insert is tightened it pulls everything together. The inside of the insert has the regular thteads.
 
OH OK. My mind was thinking more along filling a crack. In a web main crack you would also go 90* to the crack.
 
I see all three webs cracked. IMO that's extreme. I only had 2 of 3 cracked and not that far down although the pic is hard to tell the distance vs. oil. Any other cracks like head bold holes?
 
No other cracks. I received my kit today, watching the video gives me confidence. They say much more severe cracked holes can be repaired, and will be stronger than new.

I'm willing to try it, if it works it will be good news for all. If all I get is 50k miles out of this engine, that's about 10 years.
 
So Leo... Are you ok with being about 20 miles from BFE, Alberta in the dead of winter towing a trailer loaded with a big weldment you are delivering and that motor scatters? That just could be a life threatening event. We would worry for your safety. Just thinking...
 
btfarm said:
So Leo... Are you ok with being about 20 miles from BFE, Alberta in the dead of winter towing a trailer loaded with a big weldment you are delivering and that motor scatters? That just could be a life threatening event. We would worry for your safety. Just thinking...
Click to expand...
Thanks for the concern Mike, this truck is likely to be just a feed truck soon.

According to "lock n stitch", this should work.
 
I do appreciate all the warnings, I have my reservations as well.
When welding cast, with a 60-70 psi tensile strength alloy, you only need 2/3'rds penetration to have the same strength. These inserts are 130k psi, and they pull the cast together as you torque the bolt. I am also going from 12mm to 10 mm bolts, there is a significant decrease in torque put on the webs. The nature of a thread, spreads the bolt hole apart, these insert pull it together.
I hope it works.
 
I think Leo can get the most of the lock and stitch jobbys. The work we've seen him post here, he ain't no hack.
 
The pics are crappy but one is with the insert in place and the other is the threaded hole. It's all done.IMG_0509.JPG IMG_0510.JPG
 
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