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Old 04-25-2013, 07:19 AM
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treerootCO treerootCO is offline
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The internet says the pistons are made by Rebco and or ACL. The "RA" means it is a set of pistons (rings not included).

RA2648 = piston only (was probably ordered as part of a rebuild kit)
6KRY2648 = KRY (contains Plain rings)
6MKRY2648 = MKRY (contains Premium rings - Moly or Chrome)

TOP UD ???
TOP YD ???
TOP YC ???
TOP YK ???
TOP CF ??? -

Still working on the UD marking...
Page 199

This was the kit that included RA pistons:

page 9

I like finding similarities on the web. This guy has the same question as you with the same conclusion even though his is marked with YC instead of UD...
aka Mike D.----->Bio Page KDřGWY
“He who goes unarmed in paradise had better be sure that that is where he is.”—James Thurber
"Its better to be thought a fool rather than to speak up and remove all doubt." - Lincoln
pride is ego, the word I had lost was dignity. The quality or state of being worthy of esteem or respect.
Ptarmigan build thread - 95FZJ80

TLCA #14133

Last edited by treerootCO; 04-25-2013 at 08:11 AM.
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