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Originally Posted by radz28
Deck plate honing nearly duplicates the head bolt loads that cause distortion in the block when they are screwed in. By using the same gaskets, bolts, and torquing procedure, the cylinders deform like they would after the engine is assembled. After the plate is on, honing the cylinders makes them perfectly round again thereby eliminating blow-by and keeping the cylinder shape constant, improving efficiency and getting a longer life. When the engine runs, the block actually twists and deforms, and gets pulled every which way when all the components are screwed and bolted to it. By duplicating the loads that influence the distortion, you eliminate little inconsistancies, get a happier engine that will live a longer life. This is more important when pushing a design to it's limits. The higher the performance, the less room there is for error. This process is one that racers have been using for ions, and while these little inconsistancies don't effect the engine too much, when you're looking for every little bit of power, or looking for hitting a specific safety factor when you're pushing the envelop, this is one of the tools one can use to nearly assure the best running and longest lasting engine possible. If you've ever heard of engine blue-printing - this is an element of that process.
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Great explanation!!
Quote:
Originally Posted by dragon22
WOW! That is really something! AND it makes so much sense. I've been a licensed mechanic for 28 years and knew nothing of this process. Mind you, I've never been into building high performance engines, but I'm glad I learned about this process.
Can never be too information savvy! LOL
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That's kinda cool to read!
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Originally Posted by ex-SS-ve
I always figured it was the standard for how a block should be machined and just assumed that it was common practice for every auto manufacturer to ensure the best quality built motor. Guess i was wrong about that.
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Don't let this lull you into believing the LS3s, etc are given "mediocre" attention. They have GREAT build quality and tolerances...the LSA, in this case, is given slightly more attention simply due to its higher power-levels, and potential for something to break.
Do you think Ford should use the expensive plasma-arc technology on ALL their cars? It's a better design than just standard press-fit sleeves....
Remember...high-performance "supercars" get to try out emerging technologies, first because their cost allows them to absorb the premium of these techniques....and then, in time, some of this trickles down to other, less-expensive cars. It's the same with the Volt -- the pinnacle of automotive efficiency in design. The aerodynamic work on the front air damn has made it to the Cruze...and the lithium batter/controller technology has made it to several Buicks with an "eAssist" badge.
Expensive cars get more stuff packed into them...high-po cars need hi-po attention...
