ih 340 engine

1hunter · Apr 15, 2014

My 340 lost power so I got it in the garage and started checking. Did compression check #1,2,4 was 135lbs #3 was 75lbs. Pulled the valve cover and #3 had a bent push rod. Straightened it and did another test. Same 75lbs. pulled the head and #3 badly scored probly broken ring. #1,3,4 have the same piston heads and #2 is different. Has anyone seen this before?

DeltaRed · Apr 15, 2014

Yep.Someone OHed it and didnt have a clue......I once did some troubleshooting on a 'farmer overhaul' Ford 7000. Thing started HARD,lots of white smoke,no power.Finally pulled the head and found 3 different pistons!!!DUH! Soooo,I got to OH it again.This time the pistons were all the same.

1hunter · Apr 15, 2014

Yes time to resleeve and new pistons. Any suggestions on how to pull the sleeves?

mkirsch · Apr 15, 2014

You don't need to pull the sleeves. They are wet sleeves and will come out easily with an oak stick and a couple of smacks with a hammer from underneath.

1hunter · Apr 17, 2014

I got the engine apart. #1 spun bearing, #2 broken piston skirt, #3 scored cyl wall, #4 good.
Does anyone know where to get another crank in Ontario? used or new? Also #1 rod is worn because of the bearing.

ih 340 engine

1hunter

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DeltaRed

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1hunter

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mkirsch

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1hunter

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