entropy
Moderator
Posts: 8671
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posted April 20, 2007 03:57 PM
 Edited By: entropy on 20 Apr 2007 16:59
rod bearings: check em once, check em twice...
This am i was measuring up a new set of rod & main bearings bearings, prep for assembling the motor this weekend.
No changes to crank or cases or rods, so why measure?? Why not just buy new rod & main bearings, put em in??
I was tempted to take the easy road, but outa habit, I started measuring anyway.
The mains were within a 10th of what i was replacing, great
But one of the rods was .0016 when it should have been .0026.
Huh????
After a bunch of fiddling around, i replaced that brand new brown bearing with another brand new brown bearing and walla, .0027.
So... The brand new, in the package, "brown" bearing was WAY outa spec.
Who'd a thunk it????
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johnnycheese
Pro
Posts: 1008
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posted April 20, 2007 04:01 PM
you should have seen the ones Gary got from Kawasaki. always check
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Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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osti33
Needs a job
Posts: 2973
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posted April 20, 2007 04:27 PM
Yikes! Good catch Karl.
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted April 20, 2007 04:50 PM
geez, sounds like the guy with the paint brush was hung over that day. 
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Y2KZX12R
CompetitionCNC.com
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entropy
Moderator
Posts: 8671
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posted April 20, 2007 10:31 PM
quote:
geez, sounds like the guy with the paint brush was hung over that day.
lil brown paintbrush, high on fumes 
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tcchin
Zone Head
Posts: 867
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posted April 21, 2007 08:38 AM
Did you measure the individual bearing shells or did you measure the rods/bearings assembled?
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entropy
Moderator
Posts: 8671
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posted April 21, 2007 08:59 AM
i measured the assembly.
I was tempted to use yr method of measuring the shells, but ended up doing it the old fashioned way. Basically because the battery in my 0-1" mic was dead, and i was too lazy to got get another one.
I will measure the defective shell(s), and see what the difference is when i get a new battery.
This build is going together slowly. Block was re-surfaced by millennium so quench had to be re-set.
And, #3 cyl has .003-.004" less quench than the other 3. grrr... Long rod...
Pisses me off because i sent that "set" to Carrillo to be reconditioned; it had 3 rods from one set, one from another. I thought they would size & match them, weight and dimensions. Guess not, eh?
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