 Oil Pump Leak Questions, Normal wear, or....? |
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| BeatNavy |
 Aug 8 2021, 04:25 PM
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#21
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Certified Professional Scapegoat  Group: Members Posts: 2,954 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region 
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QUOTE(rfinegan @ Aug 8 2021, 06:19 PM)  Did you go with the Modified Pump from EMW (Jorge)? Fixing the OD pump problem? Hey Robert - no this is the modified 30mm type 1 from LN engineering (Type 4 store). I've used one before and it seemed to work well in terms of fit and function. I thought the fitment issue may have been more on the 26mm pumps, but I could be wrong. I actually thought about going to 26mm based on the oil pump size debate wars, but I couldn't find a good source for one already modified for type 4. |
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| rfinegan |
Aug 8 2021, 04:35 PM
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#22
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Senior Member Group: Members Posts: 1,083 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region
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If you did not see any oil pressure problems, it sounds like you are ok for this issue... keep an eye on the oil pressure and keep us posted on the progress...
-Robert QUOTE(BeatNavy @ Aug 8 2021, 02:25 PM) QUOTE(rfinegan @ Aug 8 2021, 06:19 PM) Did you go with the Modified Pump from EMW (Jorge)? Fixing the OD pump problem? Hey Robert - no this is the modified 30mm type 1 from LN engineering (Type 4 store). I've used one before and it seemed to work well in terms of fit and function. I thought the fitment issue may have been more on the 26mm pumps, but I could be wrong. I actually thought about going to 26mm based on the oil pump size debate wars, but I couldn't find a good source for one already modified for type 4. |
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| BeatNavy |
Aug 9 2021, 09:04 AM
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#23
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Certified Professional Scapegoat Group: Members Posts: 2,954 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region
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Ok, so the pump housing came off the case easier than I anticipated. I compared the old with the new. One thing that jumped out at me is that the idler gear pin seems to sit proud of the back of the pump housing on the old one. Here's a comparison:
(taken with my wife's iPhone 12 pro, with amazing resolution. Unlike my iPhone 6 which makes every picture look like a vintage loch ness monster pic) Old pump with idler gear pin sitting proud:  New one from type 4 store:  I took a look at the old and new covers. For some reason on the new one from type 4 store they really got aggressive cutting off the corner on the one side to make it clear the case. They didn't leave as much "meat" on there as I would like. So I sanded down most of the galling on the old plate and I'm thinking about reusing that. I exchanged emails with John at the Air Cooled.net and he thought the cover was reusable if I ground out the galling. Hopefully I smoothed out the galling, while still leaving grooves for the Loctite 518 to bite into. Here's a comparison of covers (taken with iPhone 6):  Just kidding, here it is with new one on top, old one on bottom. Took a lot off that corner when I don't think it's necessary to be that aggressive.  Anyway, about to install the new pump. Hopefully all good. |
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