I am interested to see how the sleeve holds up under boost and hard launches. I guess we will know this weekend. I think it has a decent chance of holding up.jmo


Im wondering if (with less surface area) if the head would warp faster. Probly not.

 

I am curious to see if the cylinder will want to get out of round under heavy load. I am witholding judgement until I see it hold up.

 

Mr. Freebird said
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Your just like a fly, you eat chit and bother people. Theres your fee.
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Here's your change.

Northern transplants are like Hemorrhoids, once they come down they never go up, and they are always a pain in the azz.


You might want to stay away from the klotz 118 octane fuel. Hint: its not an Adrenaline buzz(!), its your brain cells melting. If possible, think about it.

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The subject was Millennium AL cylinders boring and nikasil plating update which has been done for a half century; and now Millennium is among the best faultless provider even with extreme custom applications. Same low fee on quantity discounts and gaining market share every day.

If 19:1 CR doesn't prove it to everyone, then lay your stochastical or empirical parameters down now which will prove it to you. At least we know the leading machinest and the foundry was OEM quality. What will it take to prove it to you? I am interested as well.

Having worked at an AL cylinder head foundry, thicker is not always better by no means. I know the 700cc AL $215 cylinder with Nikasil is in the bank. Right now, for the big bore on stock cylinder I am approximately between 2 and 3 standard deviations sure (>85%) based on machinest, casting, and racing experts along with Scooby's recent turbo conversion with specified expert changes, for the communities interest. Thanks Scooby!

I will assume the big bore test on stock cylinder is complete, and we will be informed otherwise. The overriding fact is there has never been a machinest-direct cylinder company with the expertise of Millennium to date. They manufacture racing tolerances to specific actual pistons (!) (racing cylinders guaranteed for every type motorcycle too). So no, a foundry does not have the same required expertise to perform such a skilled machinest task. Who would let them try to gain experience?

 

ERBE and Scooby have. Remember there is only a guaranty on the nikisil coating, not on the cylinder. If the cylinder fails, Millenium will want to know so they don't do another one.............especially on their own risk. I will agree though, they are a great company.

Ron

 

I won't stoop to your level son, But thank you for proving your a fool for me. Saves me the trouble.

 

yjacket,
So what exactly are "Racing Tolerences"???? I have never heard of those any any of the GD&T (Geometric Dimensioning & Tolerancing) books I have read through....

Tom

 

Just fine accuracy tolerances. Go to their site, and they explain it well. But they do it to your exact specified piston, so its not cookie cut. The tolerances for racing are generally tighter than normal: very fine. Not two components arriving and then hope all tolerances mesh up for specific riding you want to do. You specify the piston or supply your own, give them specifics of engine enhancers if applicable; and the tolerances of bore and plating will match it perfectly in surface angles, fit, and thickness. Its not the same old unanswered questions about cookie cut parts: S, M, and L. These guys can answer every processing detail you ask them about.

Scooby and ERBE are two of the smartest and kindest guys I know, so I have been real excited about this from the start. Everyone and every bike uses Millennium all over the world, and now DS650 owners can too. Its a Honda discount for Bombardier quality, lol.

 

Are you suggesting that pistons fit tighter in the cylinders right from the machine shop on race motors? Would ring gaps be considered tolerances on a race motor to?[img]i/expressions/face-icon-small-wink.gif[/img]

 

http://willson.cm.utexas.edu/Teachin...onAccuracy.pdf

 

Do you have a version written in english? LOL