? piston/cylinder clearance for sleeved cylinder ?

[jaguar]

OK guys, the operation happens tomorrow and I need some advice.
The manual says .07mm-.09mm is the correct clearance between piston and cylinder for the standard plated aluminum cylinder.
But what is the recommended clearance with a steel sleeve (and standard Kaw piston) ? thanks

 

[shr]

Most piston clearances for that size bore in a cast iron cylinder would .0027" to .003"

 

[jaguar]

From http://www.vortechonline.com/engines/
Steel cannot dissipate heat as efficiently as aluminum and expands at a slower rate. As the heat in a steel sleeve cylinder engine increases the piston expands faster than the cylinder wall, steadily decreasing the piston clearance.
(end of quote)

It would seem that since steel dosn’t dissipate the heat as fast as aluminum that it would retain more heat and expand more. But since the thermal coefficient chart below shows steel as less expansive than aluminum it probably winds up expanding to the same size as aluminum would. So I’d think the piston-to-cylinder clearance should be the same as what is recommended for a stock aluminum cylinder. But since the steel expands slower, it also means the engine with a steel sleeved cylinder would be more prone to cold start seizures (which happens when you ride hard an engine that hasn’t been warmed up).

Coefficient of Thermal Expansion from http://metals.about.com/gi/dynamic/...yharmancanada.com/TheBrazingBook/comparis.htm

High / Low values for a temperature range between room temperature and 212-750°F (10-6 in./in.*/°F)
- - - - - - - - - - - - - - - - - - -
Magnesium Alloys 16 - 14
Aluminum & its Alloys 13.7 - 11.7
Austenitic Stainless Steels 10.2 - 9
Low Expansion Nickel Alloys’ 5.5 - 1.5
Carbon and Graphite 1.5 - 1.3

High / Low values for a temperature range between room temperature to 2200-2875°F (10-6 in./in.*/°F)
- - - - - - - - - - - - - - - - - - -
Alloy Steels 8.6 - 6.3
High Temperature Steels 7.9- 6.3