Kryndon
Proven Member
- 944
- 591
- Jan 10, 2014
-
Bulgaria,
Europe
EDIT: Oh wow, looks like I completely mixed up imperial and metric unit measurements when I checked it. I need to re-measure the tolerances tomorrow. Disregard what I said below.
I watched Jafro's oil pump video where he checks the clearances on his pump and found one to be junk. So I thought I should check mine before putting it on a newly built block.
Upon opening it up, I noticed that the drive gear was somewhat difficult to take out. The shaft came out with a rubber mallet. Its surface isn't perfectly smooth (I am not sure if it should be?) and on the inside of the housing some wear can be seen. Also running a 0.15mm feeler gauge, both gears look to be in spec (I think higher limit is 0.18mm and 0.16mm on drive/driven). However, both gears fail the lower limit pass, which is 0.06mm on the driven gear and 0.08mm on the drive gear. I could easily slide a 0.05mm feeler in there.
Would that be considered junk? Will oil flow quantity be severely reduced because of this? I can't afford a $300 brand new case and pump.
Here's a few pics:
I watched Jafro's oil pump video where he checks the clearances on his pump and found one to be junk. So I thought I should check mine before putting it on a newly built block.
Upon opening it up, I noticed that the drive gear was somewhat difficult to take out. The shaft came out with a rubber mallet. Its surface isn't perfectly smooth (I am not sure if it should be?) and on the inside of the housing some wear can be seen. Also running a 0.15mm feeler gauge, both gears look to be in spec (I think higher limit is 0.18mm and 0.16mm on drive/driven). However, both gears fail the lower limit pass, which is 0.06mm on the driven gear and 0.08mm on the drive gear. I could easily slide a 0.05mm feeler in there.
Would that be considered junk? Will oil flow quantity be severely reduced because of this? I can't afford a $300 brand new case and pump.
Here's a few pics:
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