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Massey Harris & Massey Ferguson Tractors Discussion Forum
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z145 information

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Gary Bar

10-13-2004 05:54:02




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I recently purchased a mf 135 delux 1965 i think I am now trying to rebuild the tractor engine but when I try to order a rebuilt kit I am asked what size rods and bearings.dose anyone know how i can find this information ?
The engine is a z145 continental gas 4 cyl. with side dist. Thanks Gary




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Big Dean

10-13-2004 08:33:30




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 Re: z145 information in reply to Gary Bar, 10-13-2004 05:54:02  
You will have to remove the oil pan to find the size bearings you have. The crankshaft should have the size stamped on it some place if it has ever been rurn to an under size but I have run across a few that did not. Then you will have to pull the rod and main bearing shells. They will have the size either standard or 0.010, 0.020 or 0.030 on the back side If the crankshaft has ever been turned. If they are genuine Massey bearings they may only have the part number of that size bearing on them. Check all of the bearings you would be surprised how many engine I have found to have 2 or 3 different size journals on the crankshaft. I have never figured out why someone would that.

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Gerald J.

10-13-2004 08:02:11




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 Re: z145 information in reply to Gary Bar, 10-13-2004 05:54:02  
You have to measure the journal diameters on the crankshaft with a micrometer. Then you can see if they have been ground to under the factory size. You also need to have looked at ALL of them to see if they need grinding, then the shop that grinds the crank for you will probably supply matching bearing inserts. Without these steps you CAN'T KNOW the size bearings you need.

Gerald J.



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