Zs177mm/Nc250 moto block crankcase has not have metal or paper or.. a seal, just i see on surface very thin probably slikon / or high temp plastic seal trace .
Many forums,and my friends sad replacement crankcase seal methode(if not find, fabricated original seal)
slicon applicated , offcourse me too try that , but crankcase in surfaces very thin , and i fear if much more applicated that slicone=very badly engine damaged/blocked oil pump/bearings/oil channels/filters/gears, and i just tested 2x time slicone.
Very thin applicete slicone+sponge , my moto master friend sad, use a sponge and very very thiner app slicon , and vibrated+impacted sponge slicon seal is form better thin than a paper , i make that and test again screws mounted waiting dry = crankcase in , badly situtaion (out case not important ofcrs.) failed.
İnside of crankcase better leak.
Slicon seal not for me, i understand , but i need a seal material, perfect temperature , oil strenght , what is material what is... think think ... happy end , i find that
TEFLON band...
Used a
19mm Teflon band , making double layer , and roll thread , crankcase in applied , Teflon thread and aluminium surfaces incompatible , just need very low profile applied a glue(glue type is dry
soft glue, not Japan type, or steel type.)
This methode is experimental think.. , my moto need refesh paint+eectrical replacement , proobably 2 weeks or more time need completed, after i returned here and writied here ,
i hope this methode is ok.
Never try this methode , just wait my test results.