JB weld
 

Can you JB weld the outside of engine 911s 1975? I cracked a small chunk of the engine at the base of the oil temperature sensor while dropping the engine out from my car.

I think that is your only option. Clean the are really well and apply the JP Weld. Is it just a chip or a crack that transverses into the threaded section?

Can you share a pic? JB Weld is marvelous stuff, but it does have limits. If it's a lower stress area, it may be fine.

An insert might be a better option.

Try a high metal content type.

Yes. It is a crack that transverse into threaded section.

I will post the picture of the area tomorrow

About 10% of the threaded area came of in a chunk

Without a picture, it's hard to make an accurate assessment but still, install an insert [Timesert is probably best] and replace the missing piece with an epoxy.
Our go to epoxy for case work is Loctite Hysol. 9340
We supply it in a case sealant kit available from our host.

https://www.pelicanparts.com/More_Info/SPTCSUPCSK001.htm?pn=SPTC-SUP-CSK-001&q=supertec

http://forums.pelicanparts.com/uploa...1662240544.png

Here are the pics of the damaged area.http://forums.pelicanparts.com/uploa...1662325950.jpg

Here is another pichttp://forums.pelicanparts.com/uploa...1662326119.jpg

Welding with the appropriate machine work is the best way to fix it but a TimeSert would do just fine.

So jBweld won't be the best fix. Timesert would be the best way to fix this. Henry, Thanks

I believe a combination of a TimeSert reinforced by an epoxy. Insert the sleeve until flush with the original mounting surface and then fill in the missing piece with epoxy. With a little patient sanding, you can probably make it look pretty good.

I cannot proceed my project until this broken piece resolved. Thanks

A different case is the best move. Anything else is a crap shoot. Not much depth in that hole for a timesert to grab and the fitting needs to be pretty tight to seal. Too much undeserved love for JB weld in situations like this. I had one welded once and the weld popped off upon tightening the fitting.