Other nikisil vs sleeved?

[couchhater]

nikisil vs sleeved, was wondering what the advantages or disadvantages of having a 66e cyl sleeved versus having it replated?

 

[Freakrider]

"One of the big performance advantages of nikasil-type bore over traditional cast iron sleeves (other than a major weight saving) is the ability to operate an engine with smaller piston to bore clearances since the piston and the cylinder will tend to expand a similar amount when heated. For that reason, it will be important for Bill S to accurately measure the bores after honing, then select pistons which will give him a clearance which satisfies the engine manufacturers specifications. Most normal piston ring materials work well with nikasil-type bores, but chrome faced rings (at least the compression rings) are by far the most commonly supplied by engine manufacturers. Close attention should be paid to the ring-end gap to ensure compliance with manufacturers specs."

http://www.finishing.com/1600-1799/1671.shtml

interesting tech topic...

 

[nightrider05]

I personally feel that the nikisil is much stronger...I have seen some pretty nasty blow ups with motors where the pistons have been destroyed....yet the nikisil lining hardly had a scratch. Sometimes I have even seen them look perfect and you could just prep the cylinder and install a new piston.

Disadvantages....costly to have recoated if/when the coating is damaged and can't be bored.


Those are just a couple obvious ones.

 

[Freakrider]

The Penguin posted this recently: "I'm rebuilding one right now myself - 2001 XL800

You can get the cylinder re-coated with Nikasil by Millenium Technologies. Should cost about $250 - it was cheaper for me to get it coated and buy a new piston than it was to buy a used cylinder/piston from someone parting out."

 

[WFO Speedracer]

I will take the nikasil cylinder all day long and $250.00 is the retail price for a replated cylinder, dealer cost is quite a bit cheaper