Liner Height

[in2trux]

(01-27-2017 )Running rough Wrote:  but theoreticly if the shim system does not fix the problem shouldnt cummins consider other alternatives like prehaps offset bores, who knows maybe it would not work with thier current rod design, i have heard of 1 2350 that had liner fretting in my area and it probly came from the factory with low protrustion, i can not even confirm that it was a 2350 it was a second hand story, but you dont hear that it is as commen as the 2250 were that is for sure, cummins claims the shim system from the factory fixed the problem, it comes down to workmanship, i think if the factory guys would set every engine .013 -.014 consistently these things would not fret at all maybe even without a shim, but i am sure there is a reason the shim is there,

Thanks to Mr. Hagg and Rawze for confirming Cummins "spec" and what they are willing to pass in QC. What we're learning here is how to "blueprint" these engines.
http://www.tractorengineparts.net/why-is...important/

I know most of the shims are done in brass. Our shims where done with stainless and liner height set at .017.
Whether or not SS is better in the long run remains to be seen. Far more likely that Rawze will hit the next million miles long before us to do any kind of comparison. All I know is that it was done with care and precision and should last longer than we're willing to drive it. Max boost is 40 and seldom pushed that far. The plan right now is to do a new head in 3-4 years.

Brass shim stock has long been a standard in machining chucking up a work piece in a lathe. The nature of the soft metal to squish and freeze rotation has merit. My thoughts on this were stainless would resist hammering better on the power stroke side almost as well as the cast iron counter bore, that not knowing the psi rating of the stock Cummins cast iron block.

Too bad we don't have a big enough community (even though we do) that is as interested in building a better after market engine.
https://youtu.be/AKuGnE4V0hI https://youtu.be/jgtaA6xuLcA

The racing community is always pushing the envelope. There is a tremendous amount of blood,sweat,tears and MONEY that have gone into building better engines.

I've bee a Ford fan for over 40 years, my brother Chevy. I've always been the underdog but having an engine that could spin 7500+ and stay together taught me a few things.
Every step of assembly matters.

Just imagine for a minute that if the same energy went into making an 871 that could do that for a lifetime? Not in their best interest, F_ that!

Hammer, if you're interested talk to Gearhead about the SS shims.