Why do we need a wet cylinder sleeve?
Sleeves with cooling passages can also be known as water-jacket sleeves. Due to being in direct contact with the coolant, wet sleeved cylinders have better cooling and a more even temperature distribution, but this design makes the engine as a whole less rigid.
What is a wet sleeve cylinder?
Wet Type Cylinder Liner: Wet type Cylinders are made up of the same material as of Dry Type Cylinder Liner. Wet Liners interact with Engine coolant directly to protect the Piston. Wet Liners have better heat dissipation and cooling than Dry-type Cylinder Liner.
Can you sleeve a cracked cylinder?
Damaged and worn cast iron and aluminum engine blocks have long been repaired using dry sleeves. Installing a repair sleeve can often save the block if a cylinder has excessive taper wear, or is cracked, scored or otherwise damaged, and boring out the damaged cylinder.
What is the difference between wet liner and dry liner engines?
The dry liner does not come in contact with the coolant. Instead, it fits closely against the wall of the cooling jacket in the cylinder block. With the wet liner, the coolant comes in direct contact with the liner.
How do you put a sleeve on a cylinder?
The recommended way to install sleeves is to chill or freeze the sleeves and to preheat the block. Placing the sleeves in a household deep freeze will typically shrink their outer diameter about . 002˝. Packing them with dry ice or spraying them with some liquid nitrogen will shrink them even more, typically .
What should I use to lubricate the cylinder seal on a DT466?
The bulletin advises using vegetable oil to lubricate the liner seal before the installation (We used ‘Lubriplate’ grease) It’s a great substitute. Another important note is once the cylinder liners are installed make sure they are secured with liner hold downs.
Can a DT466 diesel engine be removed from the frame?
In-frame is exactly what it says….the block does not have to be removed and the head, pistons and cylinder liners can be replaced while the block is still in the frame. This has always been a bonus with DT466 models because of the low cost and minimum labour hours it takes to carry out the job.
Are there any disadvantages to having wet liners on diesel engines?
One disadvantage to diesel engines with wet liners (meaning that they are removable from the engine block) is the o-ring seals that separate the coolant from the crankcase DO fail eventually. That is what happened to one of our buses while it was out on a run.
What are the advantages of a DT466 engine?
One of the big advantages of the DT466 engine is the easy steps to rebuild the engine which is an in-frame. In-frame is exactly what it says….the block does not have to be removed and the head, pistons and cylinder liners can be replaced while the block is still in the frame.