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engine block

4983 Views 12 Replies 7 Participants Last post by  bdcbbb
What causes these engine blocks to crack on the side, i can see mines either been braised or welded. It doesn't leak any coolant and there is no coolant getting into oil so i assume the repair was successful
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Failure to properly maintain antifreeze or properly drain the block for winter or if it is the back corner somebody put to long of a bolt in and it bottomed out.
now its in a H pattern on the left side of engine block, i'm kinda wonderring if i should take engine apart, have the engine block baked and see what it looks like
Wow! Hits head as he suddenly remembers to go an check the coolant in the tractor since it's now Winter. DOH! Should be fine but best to be sure. N.

Every other machine got checked and winterized and prepped for snow except the 8N.
If it aint leaking why would you fool around with in? H pattern? Post os photos.

Kirk
So if it isn't leaking it has already been repaired satisfactorily. :fing32:

Putty & paint the area if the sight of it keeps you up at night.. :dunno:

The actual reason is that once the water in the block froze & then expanded..
It pushed towards the point of least resistance from the expansion point.. As the inside areas of the block have the cylinders a bit more support it tends to push the outside first as that is usually the easiest route. If you have a chance to look at the block from the top (head) side you will see what I'm rambling on about.. Here's one: http://www.wengers.com/parts/Farm-T...Engine-Gas/Sub/CYLINDER-BLOCK/01-6010C_8N.htm

The large holes between the cylinders are the water jacket and water (& anti-freeze hopefully) surround them and is contained by the block's outer jacket. The round metal disk @ the bottom front side below the dipstick of the block is a 'freeze-plug' which is supposed to push out and relieve that pressure but it must have been blocked off by more ice. The location of these nowadays is towards the top sides (~1/4 to 1/2 way down from top of block) of almost any engine I've worked on. **Must be bottom of the block wasn't the best place to put them huh? :sorry1: Mr. Ford
I'll hazard a guess that your "H" shaped braze repair is around one of the raised circles on the sides of the block as the openings of the water jacket is supported by metal from the cylinders to the block sides by a strip of metal and the jacket's open spaces are largest there..

The outside of the block isn't always where they leak though.. Sometimes the cylinders crack and then then water goes everywhere.. It's truly an unsettling sight to see foam emitting from the crankcase vent / oil filler cap shortly after an engine starts.. :Stop: :banghead3 :duh: :Disgus: :crybaby:

It can be a heck of a lot more expensive than a little braze & time to fix that one as a block replacement could have been necessary.. So the PO of your 'N' got lucky!!! :trink40:

Enjoy your 'N'! :goodl:
Those aren't "freeze" plugs, although they may function as such at times. They fill the holes in the block that supported the sand cores when the block was cast. The proper terminology is "core plugs".
went out to the barn, fyi the engine is on engine stand upside down

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Yup, that's one heck of a mess but if it's a worker and doesn't leak I wouldn't worry about it. I 've seen similar on good running tractors, aint pretty though.
I'm with Kirk, if it ain't broke "again" and don't leak, tractor on.
Well what my issue is I have a stuck Valve in the engine the tractor has had the engine welded like this for 20+ years I'm redoing the tractor not so much as a sshow piece but to work it but when I clean it I want it too look decent I don't mind the crack I just don't want to fix engine anew have to pull it back apart cause its leaking, so I think of its been this way for 20 years should be fine. For Many more
Those aren't "freeze" plugs, although they may function as such at times. They fill the holes in the block that supported the sand cores when the block was cast. The proper terminology is "core plugs".
More a question, in reading thispost its seems like this fits my problems. The tractor (ford 4000) leaks water directly out of one of these core plug holes, behind the fuel injector of course. Can this be fixed easily or no?
I have a water leak in engine block ,The tractor (ford 4000) leaks water directly out of one of these core plug holes, behind the fuel injector of course. Can this be fixed easily or no?
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