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Recieved the new pistons. I've bought these QSC's to test them out as I may (gulp) be carrying them in my measley online store. Yes, I know its kind of lame to have an online store, but I'm kind of lame that way. And I've been having fun playing with parts lately, lots of parts. So many fing parts I had to set up another rack in my garage!

Anyway, to the pistons.

measure out good, about .02mm out of round which is just under .001" , and within acceptable tolerance. The bottom 1/5th of the cylinders are actually tighter by a couple thou, which i've been told is to cut down on piston slap. Do I believe the sales pitch? I'll believe it when the motor is together I suppose. Another source tells me there is another individual that specs his this way.

I have to gripe about the dinged fin though. When will people learn that you have to put packing materials IN the box to keep stuff from breaking. A handful of packing peanuts does not do it.

Pistons were within 5 grams of each other when matched to the correct pins, you can see piston weight on the tops of them, approx 610g with pin . My pal agreed they looked like a nice set of pistons, but the cylinders made lately from all sources have had mixed reviews so I am taking these in for the cold treatment.

I also shot the diagrams of my measurements if you are interested in how they checked out. I used a mitutoyo bore guage that measures to .01mm and was calibrated. Piston measurements were done with a caliper so not quite as accurate, but close enough to see clearances, well actually I did them super quick so not as accurate at all. They had a tight fell in the bore though, tighter than my new KS 1700's feel for sure.

Let me know what you think!

Motor goes in for cryo treatment tomorrow. Maybe.

first draft: ------> http://kabventure.ecrater.com/


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