So a guy probably wants to get the rings first and then cut/measure until the protrusion is correct I guess? Then leave them just a touch proud?
4MG Rebuild
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Oxbow, Feb 19, 2024.
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@wore out , do you have a counter bore machine? I have watched numerous videos on the process and believe we could probably do that ourselves. Perhaps I could rent yours and take you up on the offer to have the rings made. Our local machine shop specializes in irrigation pumps and motors. They machine a lot of parts, but primarily for irrigation applications.
I'll send you a text, and thanks again! -
X2 on steam cleaning it. Pull all the oil galley plugs down the side and wash everything out. Blow it dry with compressed air after and make sure to hit all the oil passages. Light coat of wd40 or similar stops the flash rust.
Lower bores look really good for the age, 2 part epoxy will fix up the top for sure. I wouldnt be scared of counterboring them all down to 60 or 80 thou. I think cat makes a 120 or 200 shim as well. @wore out 's method sure looks clean on the top deck though.Attached Files:
Last edited: Feb 23, 2024
broke down plumber, High Stepper, Feedman and 4 others Thank this. -
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Thanks for digging up those files! That's helpfull.Last edited: Feb 23, 2024
broke down plumber, Feedman, Last Call and 1 other person Thank this. -
broke down plumber, pushbroom and wore out Thank this.
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Well I think the weather will be decent tomorrow to drag the hot water pressure washer out and give the block a bath. My closest frost-free wasn't froze, and as long as I remember to get a gallon of RV antifreeze to suck up into the washer when I'm done all should be good! I'll stock up on Panther Piss to give it a coat when I'm done.
broke down plumber Thanks this. -
I have no experience with the inserts, just with the shims. 9Y3368 is the shim I use on 95% of block cuts. .032 thou. Then go up in shim size as per damage.
Id use whoever @wore out has used for the inserts, at least you get someone with experience with them.broke down plumber and Oxbow Thank this. -
My friend at Cat sent me this:
Cat has the thickest (.027") available for $107 each. If a fella is going to go this route it probably makes sense to go with the thickest ones for more adhesion surface?
broke down plumber and wore out Thank this. -
Id just go with enough shim to fix the damage and bring it back to spec. Then the next time its apart it could still be cut deeper if it ever had damage again. If you go to the thickest first you really dont have a plan for the next rebuild.
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