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Oil leak

r1200rst

Member
After 50 years a oil gallery plug has started leaking on my 1973 R75/5. Does anybody have "personal" experience with sealing this back up?
 

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The same oil channel leaked on my R90. The solution was to drain the oil. Clean everything well and then seal. I used a Permatex product which seals threads. The product consisted of a primer and a sealer. Curing time was 24 hours. No more issues.
I will look in my shop to find the product name. I will post here if I find it.
Good luck!
John
 
The same oil channel leaked on my R90. The solution was to drain the oil. Clean everything well and then seal. I used a Permatex product which seals threads. The product consisted of a primer and a sealer. Curing time was 24 hours. No more issues.
I will look in my shop to find the product name. I will post here if I find it.
Good luck!
John
Thanks, I look forward to getting the info.
 
Seems like you don't want this galley port to open up again. Not familiar with the Permatex product, but seems like a version of red Loctite would be warranted. I believe Snowbum is referring to these plugs on this website as #4 on the sketch. He has listed blind plug #11111338645. His discussion includes using strong Loctite.
 
Seems like you don't want this galley port to open up again. Not familiar with the Permatex product, but seems like a version of red Loctite would be warranted. I believe Snowbum is referring to these plugs on this website as #4 on the sketch. He has listed blind plug #11111338645. His discussion includes using strong Loctite.
I did try Loctite but not with any success.
 
As odd as it may sound, I’m using Blue Monster Teflon tape to seal threaded connections.


I’ve used it on applications that it wasn’t even recommended with success.

OM
 
Thanks, I look forward to getting the info.
Ok. The roducts are: Permatex Surface Prep (Item # 24163) and Permatex Thread Sealant ( High Temperature) 6 ml tube, (PX #59206). Fixture time is 4 hours. Full cure is 24 - 72 hours.
 

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I have great success with Permatex #80017 Aviation Sealant liquid, for most gaskets, machined surfaces and screw thread connections. For airplane, automotive and pipe fitting applications. PM me if your interested in a bottle, I've got a few cases.PERMATEX 80017.jpg
 
Can somebody further explain this specific oil plug? Is it pressed into place like an ordinary automotive freeze plug or is it threaded into place, or what?
 
Can somebody further explain this specific oil plug? Is it pressed into place like an ordinary automotive freeze plug or is it threaded into place, or what?
It threads in but does not bottom out which creates a problem. Whatever seals it must also hold it in place.
 
A buddy of mine had a devil of a time getting one of his oil galley plugs to stop leaking on his 77 R100RS. I recall that he tried various remedies without success. I believe that he found some method recommended by Matt Parkhouse that finally worked. Perhaps it was in a previous column in ON by Matt. (I don't recall what the final effective fix was.)

Although the folks that do fracking to recover natural gas are able to drill at a right angle (one hole down and many out radially), I have never been successful in getting a drill bit to "bend". It seems the Germans also could only drill in a straight line. To create the necessary oil passages it was necessary to drill inward from outside the engine case. Upon creating the desired oil passage the external "hole" was sealed using a threaded plug. After time (and many heat cycles) sometimes these plugs stop sealing the hole. I've not had this happen to my airheads (yet!); it seems possible and maybe even likely in the future. Thus, I'd suggest that effective "fixes" be made into an easily referenced tech tip.
 
It threads in but does not bottom out which creates a problem. Whatever seals it must also hold it in place.
Correct. When I sealed mine I screwed it in to the aproximate position it was in prior to repair. Then I left it a week for the sealant to cure. Three years later all is still good.
 
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