ORIGINAL: DarZeelon
BW,
I (and several others here) do not think Le Fou needs to replace the sleeve in his engine...
I don't think a tedious and elaborate process is used to produce any sleeve, of any manufacturer...
It is probably machined bar-stock, before getting its plating/coating and final machining.
If any engine manufacturer(s) actually thought following the technique outlined in this thread, could actually compromise the well-being of their tapered-bore engines, he/they would have 'chimed-in' and written something to indicate this...
Once again, You don't Know if he needs a sleeve in his engine. He seems to think so...
Machining a sleeve from bar stock "IS" the tedious and elaborate process. If you were to make a sleeve for an engine would you leave the majority of the material in the
"chip pan" by using solid bar-stock (which is "priced" by the weight $$$) or buy "tube stock" with a "hole" already there? (You're going to make a bazillion of them when you go into production...)
Why take the time to machine all that material away only to make scrap metal out of it?
They have........You just fail to read and understand what was written.
There is some good and bad information out there about break in proceedures for ABC type engines...... some info is a mixture of both. In general, a proceedure outline by an engine manufacturer should be followed as written.
Other engine manufacturers have their noted proceedures. The proceedures depend a lot on materials.
Perhaps we could ask "Magnum Engines" to post the "Why We Want It done This Way".
Then you could explain to them why they have their heads up their [sm=confused.gif]
Todd Nicholson
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