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850 Cylinders

S

Shafty

Just got it firing!
Joined
Nov 9, 2008
Messages
9
I have a set of 83mm Cylinders and pistons and need some info.

1) Are all 850 roundfin cylinders chrome lined (excluding iron bores)? If not , how do you tell a Nikasil from a chrome bore?

2) How do you know if cylinders have been relined with Nikasil?

3) Is a lip on the top of the bore (the bit above the maximum travel of the piston where cylinder hasnt worn) a bad thing?

Thanx :blink:
 
Shafty, I`ve yet to see a lip on a used nikasil cylinder, they just dont wear much. A lip is not a good thing, the cylinder will likely have taper in it and rings that open and close wear quickly and dont seal as well. Usually lips are seen in cast iron bores... The chrome cylinders are generally shinier than nikasil especially where the rings dont make contact. whatcha workin on? Bill R.
 
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