hi guys,
does sleeved blocks (darton mid in particular) have a higher operating temperature then a stock sleeve?

thanks

 

Nope.

 

TNX

 

Yea operating temps should remain the same. One thing about the MID design is it required a thorough coolant bleed as sometime the flanges on the sleeves can trap small air bubbles. I would suggest doing the coolant fill using a vacuum filling device if you haven't already, they exacuate virtually all of the air in the coolant system before using that vacuum to transfer the coolant into the engine.