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Repair liner or not?? - Printable Version

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Repair liner or not?? - Duncansport - 08-05-2013

So who knows what the deal is with the cylinder liners on 602.962 1991. EPC says they have them and there are not any oversize pistons available for this engine Huh
Having the head off of the engine a month ago, it didn't look like the engine had removable liners?


RE: Repair liner or not?? - Mark_M - 08-05-2013

I would be surprised if it did have liners being an iron block. That doesn't mean that you cant put one in it though to save the block. I would get your block ultrasonic tested before spending the bucks though.


RE: Repair liner or not?? - Duncansport - 08-06-2013

Seems odd to me there are not any "repair" or oversize pistons for this.

Here is the EPC image for the liners
   

The Sleeves are cheap money, $29 per. The piston set also not to bad at $700.


RE: Repair liner or not?? - Simpler=Better - 08-06-2013

You can always order custom pistons. In other engines I hear about $100-$150 (gas turbo motors)


RE: Repair liner or not?? - willbhere4u - 08-06-2013

The sleeves are fit tightly in to the block then machined in the block to fit. they are in there from the factory.

I believe that once they are replaced the the block will need to be decked and then the sleeves will need to be honed.

There is a special tool to hammer in & out the old and new sleeves

I have heard there is a trick that helps remove the liners with dry ice?


RE: Repair liner or not?? - hansendk - 08-06-2013

well i dont know how you do it in the US but here you can get pistons 89,50 mm from Mahle std height number is 002 24 02
the number for -0,2 mm height is 002 24 12.

the liners is for pressfit and can only be used for std. size pistons, and they are semi so you need to bore and hone to get finish size.

i think that KS. also make pistons but i dont have that catalog here

hope that helps.


RE: Repair liner or not?? - Duncansport - 08-06-2013

(08-06-2013, 03:03 PM)hansendk well i dont know how you do it in the US but here you can get pistons 89,50 mm from Mahle std height number is 002 24 02
the number for -0,2 mm height is 002 24 12.

the liners is for pressfit and can only be used for std. size pistons, and they are semi so you need to bore and hone to get finish size.

i think that KS. also make pistons but i dont have that catalog here

hope that helps.

Thanks! Yeah i understood the liners are only a rough fit and need to be honed for size. According to WIS later blocks were not fitted with linders and need to be bored out for fitment. The part number you list, is that with a 602 prefix?
Thanks you've been very helpful.


RE: Repair liner or not?? - hansendk - 08-07-2013

I dont know what you mean with prefix the piston is used in OM 601 2,3,OM 602 2,9 and OM 662 2,9 the last one is what i have in my Ssangyong
I think you call it 3,0 in the US

OE from Mercedes the pistons are Mahle, KS or Nural all german piston manufactores.
I put the Mahle number in because i know you can get them in the US. (i play with Subaru also)


RE: Repair liner or not?? - Duncansport - 08-07-2013

(08-07-2013, 02:43 AM)hansendk I dont know what you mean with prefix the piston is used in OM 601 2,3,OM 602 2,9 and OM 662 2,9 the last one is what i have in my Ssangyong
I think you call it 3,0 in the US

OE from Mercedes the pistons are Mahle, KS or Nural all german piston manufactores.
I put the Mahle number in because i know you can get them in the US. (i play with Subaru also)

Thanks again. I searched out the Mahle part number and found it on their website but i have yet to find anyone who can get it. Ill call some of my suppliers today to see where/how to get these things.


RE: Repair liner or not?? - MFSuper90 - 08-08-2013

We put sleeves in using liquid nitrogen. Pour some out in a styrofoam container, set the sleeve under the nitrogen, and put work lights into the cylinders to warm them up.
Pull the sleeves out of the liquid nitrogen and they slide right in. Like butter Cool

Also, the easiest way to get sleeves out is to make a perfect sized 1/2 thick washer on the lathe, and just shove them out in a decent sized press.


RE: Repair liner or not?? - ecFSE - 08-08-2013

You do know that the 2,9 is direct injection?
Different head, pistons, injectors, injection pump and so on from
The outer OM602Confused


RE: Repair liner or not?? - Eric78 - 08-10-2013

602s were available with & without liners, you can put liners in blocks that didn't originally have them, here there is only one place I know that sell the liners & they are around $100 each, the same liner is common to the 2.5 litre 602s, 605s, 3 litre 603s 606s