Help Please!! Cracked oil galley

Yep Pipe/Gas thread same same.

I don’t like your chances of doing anything successful with it in place and with its age the molecules have probably beaten themselves to death by now and it’s time for a new block.
The only think you could do/try is loosen the plug and take some tension off the block. Remove it and put some locktite on it and put it back finger tight and let the locktite harden. Trouble is the damage is done so this might get you a few miles but the alternative is engine out!
Block are available and cheap but its the cost to remove strip it and re-assemble it that Hurts!!

God luck

 

bullhauler,are you on the road,or home? the reason i ask is i have a cousin who welded one of our tractor(farm) engines with the same type crack around (pipe) threads.I know this isn't a permenant or popular fix with most mech's.,but he is really good on cast,i also know it is still dry where he welded it,and it might ''get ya by for a while'' if you know a good metal fabricator that is careful not to ''overheat it'' when he is welding

 

Look here http://www.locknstitch.com/RepairExamples.htm for info on stitching.

 

X2 for the locknstich, its the only really viable repair inframe, it could definately be welded by the right person but you would need the block out and spotlessly clean to put it in an oven to weld it sucessfully. Either repair is a bit hit and miss, both could see the crack continue within days of the repair. Also be careful with any repair as the plug you are describing sounds like it goes into the main oil gallery, any repair that blocks or partially blocks the gallery will be very bad news for the big end and mains at the back of the block.

I've see a Cat 3516 block that had a massive hole in it from a thrown rod be welded up, you could put your head through the hole and they welded a patch in it, rebuilt it and sent it back to work.

 

much as I would like to come up with an in place repair ,I think a fresh block will be the answer . A crack in an oil passage has forces applied from inside spreading the area as well a fluids in the crack speading the crack its self, without heating the block I doubt that a cast weld would hold especially with oil contamination. I don't see the locknstich working in a hydraulic environment. Sorry this happened to you but I sure wouldn't take a chance with patching it. If it lets go under power its going to be messy

 

Bullhauler you have a Cracked Block and were that crack is leads DIRECTLY to the Main and rod Journals. I would not advise any repairs at all. Get a differant block and see if CAT will give you anything at all for warrenty or what was called Goodwill. Your block is JUNK and will never be repairable. If you fixed it with anything way to big of a chance of it losing a chunk of the repair and plugging a rod oil passage or Main bearing passage or worse case totally blocking oil feed into the lower end.

 

I would try this before buying a block. If it doesn't hold you only out the cost of the stitch.

 

Dittos on trying the stitch!
My Dad had 2 N14s stitched by a shop in Eunice LA; one they warranted, the other they wouldn't; (do not remember the reason). Both held and both are 5+years old. At least discuss this with someone who does stitching, based on what I've just read, chances are they have come across a similar crack.

Good Luck

 

Bulhauler, Good luck and keep us posted on how it works out.