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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF Z134 engine oil filter/ pressure

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vw MF202

04-11-2005 13:16:03




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I have a MF202 with this engine and during oil change this weekend I noticed something odd on the oil filter assem. The bolt that holds the oil filter cover to the block has a hole thru the center and up into the center of the paper oil filter. I expect that oil flows into the stock oil filter from the outside, filters toward the center of the eilter element and then thru this tiny bolt hole and back into the crankcase OR into the oil galleys for the crank bearings and such. My question is that this oil 'return ' hole drilled thru the bolt is only 1/16 or maybe a little larger. Why so small? Could I drill larger to increase oil flow thru the filter? Would oil pressure DROP-because the filter is after the crank bearings and I am spilling off oil from the crank faster and dropping oil faster into the crankcase? or would oil pressure INCREASE because the filter is BEFORE the bearing journals and allows more oil TO THE crank instead of plugging up the flow with this tiny hole?
This tractor has maximum oil press of 22 psi when cold and 15 when warm in 90 degree weather at top rpm's. Just want to prolong engine life with more press/flow of possible.
Thanks, Shane

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RandyR

04-11-2005 13:33:33




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 Re: MF Z134 engine oil filter/ pressure in reply to vw MF202, 04-11-2005 13:16:03  
The filter is a bypass type. Oil goes through the filter, then into the sump. The oil to the engine parts isn't filtered on it's way to the parts. The hole is small to keep pressure up on the system. If you drill it out, all lubricated parts of the engine will starve for oil, and the engine will be ruined. It's an old design. All vehicles use full flow filters now, meaning the oil passes through the filter first, then to the parts. It's been this way for over 40 years.

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Gerald J.

04-11-2005 13:32:35




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 Re: MF Z134 engine oil filter/ pressure in reply to vw MF202, 04-11-2005 13:16:03  
Its a bypass filter, gets oil only from the pressure relief valve. Increasing the ease of flow through it can only lower oil pressure at the mains.

Gerald J.



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