Oil filter housing will not screw back on.

I was directed to post here. This is the link to the original thread http://www.xjbikes.com/forums/threads/oil-filter-housing-will-not-screw-back-on.70139/#post-472075

I'm glad I found this form. I just purchased an '81 Seca XJ 750 for $250. It needs a little work but it runs. I am no mechanic by any means so your advise is greatly appreciated.

I drained the oil and when screwing the oil filter housing back on it stopped with about a quarter of an inch left to go. It's also crooked as it goes in. I looked inside and it looks like some threads broke off on the inside. It was screwing in just fine with no problems at all until it got to this point then it gets too tight. I didn't muscle it in there so I'm not sure how it happened but it did. Can this be re tapped or will I need to get that part of the motor replaced?

 

As mentioned in the other thread you can probably save that with a thread reformer, or tap. If that doesn't work then you can repair it with a threaded insert.

 

I would fix the threads and put a spin on adaptor on there and never disturb those threads again.
You should be able to get a tap that you could grind down the end so it will go to the bottom unless you cna find a bottoming tap.

 

This sounds like a good idea. Thanks.

 

Anyone have any suggestions on where to get a 17mm thread tap? I'm having a heck of a time finding one online. I guess I still have to get a pitch gauge too. I contacted xj4ever and got the info on the spin on adapter I think that's the route I'll go.

 

Amazon, Ebay, McMaster-Carr, Grainger....

 

the thread pitch is 1.5 but i think you better revisit the size. i measure it at 19.8mm, that makes it a 19mm.

hold the presses

edit #1) 19.8mm makes it a 20mm by 1.5 pitch
sorry

 

Have a tap ordered. I'll let you know how it goes. Thanks for all the advice.