Discussion and questions related to the course Engine Building Fundamentals
does anyone have experience with sleeves in a cast iron blocks?
i am worried about: thermal expansion and the sleeves sinking?
does a sleeve noticeably effect engine operating temps and cooling system efficiency (circuit car)?
i am considering my options for a Toyota 3SGTE rebuild as per photos the bore looks to have cracked. (will get crack tested to be sure) it possible its corrosion as there was some surface rust on cam lobes etc (not sure how this occurred)
one option is to sleeve a non cracked block, this block was only 0.5mm over sized and running 19psi of boost at 240awkw on E85. so nothing crazy.
cause for pulling the motor: high coolant pressure (26psi on a 19psi cap) and consuming coolant, pulled it down and there is some surface rust in the cylinder head.
looking for peoples experiences with cast iron blocks not just 3S motors as i know they arent overly popular.
I had my 4g63 tubo 2.2L stroker sleeved once and it is still alive - no any issues seen with sleevs or coolant temperature at all with around 300 awkw. The sleeves used were from diesel Isuzu engine and still seem to be ok but the milage is not that big yet.
I had span rod bearing and had to replace it so i had a chance to observe sleeves conditions and height with head removed - everything was just fine.
georg1970, did you run a wet or dry sleeve set up?
It was dry sleeve set up.