4MG Rebuild
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Oxbow, Feb 19, 2024.
Page 6 of 18
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You gonna send that block off to get boiled out ?
Oxbow Thanks this. -
Probably. We'll decide after we see if it needs to go to the machine shop.JoeyJunk and broke down plumber Thank this.
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I sure aint a mechanic but if i was going thru the trouble of a rebuild i' d sure want to know coolant passages are all clear . A hard lesson i learned on a ole 966 international tractor engine that ran hot after freshen up .
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Ive pulled cabs with straps through the window holes to an overhead lift.
Just pulled a sleeper yesterday with a tracked skidsteer with extensions on the forks. Just gotta block the forks to lift on the crossmembers/gussets of the sleeper. Lifted the sleeper in the air and pushed the truck out from under it. Cabs/sleepers are alot lighter then what they look like.
If you wait til the summer I can chuck my block cutter in the back seat of the mustang and cut the bores on the way through lol.High Stepper, JoeyJunk, Feedman and 4 others Thank this. -
I used to know this ol outlaw lived on the side of US 67 halfway between the old Sanatorium and the Girl Scout camp. Had a house full of youngins made his livin with a white V8. He used to ask me “Son you know the difference in a white CAT abd a yellow motor don’t you? You can make that white CAT RUN!!!!!” He’d say. Now I can’t say for sure or not if the white motors were any better. But I will say mines white cause sometimes you just need a little something to believe in.sawmill, TexasRiverRat, JoeyJunk and 6 others Thank this.
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If nothing else it is a good conversation piece. Of course you have plenty going on that would start a conversation anyway!JoeyJunk, Feedman, broke down plumber and 1 other person Thank this.
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Ok, liners are pulled.
There is some evidence of electrolosis on the outside of the liners, but not horrible considering we have no idea of the history. This was probably the worst liner.
My biggest concern on the lower bores is some erosion where the top o-ring rests in the bevel.
The bores themselves don't look bad to me. You can just feel where the o-rings rested on some, but not all.
260REM, mile marker 27, Last Call and 3 others Thank this. -
The deck has been counterbored before. Holes 2 through six all had one shim on, and the depth of the counterbore varied between .026 and .031(rough measurement using a micrometer). Hole #1 was deeper at .061, and that liner had two shims on it. I understand that that is a no no as you should be able to order single shims up to what you need.
#1
260REM, mile marker 27, Big Road Skateboard and 6 others Thank this.
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