honing the cylinders?

[NOMIEZVR4]

i am puttin new pistons and piston rings...is it neccasary to hone the cylinders. i am not tooo familar with this. what does honing the cylinders do and do i have to get it done?

 

[TaloNKiD505]

only if your going to bigger pistons or if the sleevs are damaged

 

[NOMIEZVR4]

the sleeves are not damanged and i am gettin stock piston and rings...thanks for the advice

 

[laser9320]

I thought it was neccessary.

 

[DSMRevolution]

Originally posted by TaloNKiD505
only if your going to bigger pistons or if the sleevs are damaged

That is somewhat correct. I would recommend honeing the cylinders no matter what. DSM blocks are not sleved. They are a solid one piece assembly. What it will do is clean the sidewalls of the cylinders to a like new condition. It will not effect the cylinder bore. If it does bring it out of spec, then you probley did something wrong. All DSM engines that I have pulled before needed to be honed. The part of the cylinder where the piston doesn't ride (bottom) is where it will get kind of rusty with carbon buildup. If you pull the head and look at the cylinder walls you will probley see alot of small surface scratches. Honeing will fix this problem.

Usually when you are boreing a cylinder it is because you either want different size pistons (each have their advantages) or your walls have gashes in them. I think they sell DSM pistons .20 over. Correct me if I am wrong.

All honeing requires is a small amount of tools. A drill, some oil, and a honeing tool. It is very easy to do. good luck

 

[mms]

The bore must be honed to give the new ring a chance to seat. Usually the bore is too smooth for the ring to seat properly if the engine has been run for very long.

 

[Defiant]

Honing clears off the glaze from the last bazillion trips the old rings made up and down those walls. A berry hone works just fine, chucked up in a drill motor and run for about five seconds up-and-down in a light bath of whatever spray oil's handy. You're trying for about a 15° crosshatch pattern.

 

[NDgsx]

If you are doing this with the crank installed COVER THE BOTTOM OF THE BORE. Put a coffe can lid in the bottom with a few rags on it in the bottom of the bore.
Clean the snot out of the walls with paper towels soaked in ATF. Keep going until they come out completely white.
Those little metal fragments will get you in trouble in a hurry if you're not very careful to keep everything clean.

 

[RX_speed]

Originally posted by DSMRevolution

I would recommend honeing the cylinders no matter what.

Yeah if i were you i would do it anyway. Ill be putting in new pistons soon (whenever the order comes in) and im going to hone the cylinders today.

 

[honda_burner]

I'm kinda wondering the same thing. I just bought new pistons, rings and bearings and assembled it all and then wanted to research how necessary it is to hone a cylinder. (yeah i know, take it easy on me, im still a rookie at engine rebuilding). My question is, what are my odds at getting away with new pistons and rings with no hone? If i take it all apart to hone the cylinders and de glaze them, that would mean i would have to buy new bearings correct? Because they have been smooshed (for lack of better terms). Again, sorry for the dumbass move and question but I appreciate the help. Thanks

 

[My1GLaser]

When you hone a cylinder, it removes the glaze but it also puts a cross-hatch on the cylinder walls. It is a rough surface that acts like a file and actually files the ring surface as it moves up and down the bore. It matches the ring to the cylinder wall to get as complete of a seal as possible. Without the hone, the walls are smooth and there is nothing to shape the ring to match the cylinder. You end up with crappy compression. That is also why it is recommended to change your oil frequently during break-in. The filing action puts a bunch of metal in the oil.

As for the bearings, I assume you mean "crush" That's a term used meaning the ends of each bearing are butted together sufficiently, by torquing the rod caps correctly. No you wouldn't have to get new bearings. Bearings are reusable if they are in good condition. I would only use them on the same rod or main journal in the same position they were in originally! I assume you haven't run the motor, so technically it doesn't matter where they go.

Its better to ask now while the motor is still out of the car than to find out the hard way when your compression is low!

 

[honda_burner]

No I have not run the motor. In fact all I have accomplished so far is to put the crank and pistons in and torque them down. Just picked up the head and was about to start the re assembly when I started to wonder. Thank you for the quick response. I will take them out tomorrow morning and do it the right way. Im really not trying to do a rebuild every year.....