block repair

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   The engine block i took out of my wc Is cracked in between all the cylinders. Three seperate cracks. I know blocks can be welded, but can this be done without affecting how the sleeves fit, or is this block junk? I'm not exactly sure which block i have, because alot of the parts i know aren't original. It has m&w 4 1/8 cratered pistons, and a a wd45 crank. The carb that was on the engine is a marvel that is of the model from a 45 or d17. The block has the plate covering the right side by the lifters. Three rods had castle nuts and cotter keys, and one had the other style that looks like a castle nut but isn't. Kinda thinking this thing is a hybrid. So, back to my original question, what should i do with this block?

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powertech84 Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 17 Oct 2009 Location: Wisconsin Points: 467	Post Options Post Reply Quote powertech84 Report Post Thanks(0) Quote Reply Topic: block repair Posted: 17 Feb 2010 at 11:14pm
	The engine block i took out of my wc Is cracked in between all the cylinders. Three seperate cracks. I know blocks can be welded, but can this be done without affecting how the sleeves fit, or is this block junk? I'm not exactly sure which block i have, because alot of the parts i know aren't original. It has m&w 4 1/8 cratered pistons, and a a wd45 crank. The carb that was on the engine is a marvel that is of the model from a 45 or d17. The block has the plate covering the right side by the lifters. Three rods had castle nuts and cotter keys, and one had the other style that looks like a castle nut but isn't. Kinda thinking this thing is a hybrid. So, back to my original question, what should i do with this block?

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Gary in Texas Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Burkburnett, TX Points: 630	Post Options Post Reply Quote Gary in Texas Report Post Thanks(0) Quote Reply Posted: 18 Feb 2010 at 5:10am
	If the cracks are at the top of the block, don't worrie. The head gasket will seal that area. If the cracks are at the bottom of the sleeves you have a problem. Don't know of anyone tha will repair that area.

Dick L Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Edon Ohio Points: 5087	Post Options Post Reply Quote Dick L Report Post Thanks(0) Quote Reply Posted: 18 Feb 2010 at 5:11am
	Hair line cracks on any wet sleeve engine are common. This is cause from running them out of water not freezing. Wide uneven cracks between the cylinders might be from freezing and can be pulled back together without welding. Welding this areas is not necessary as the head gasket will seal the cracks the same as it seals around the sleeves. Having to change rod bolts in an overhaul would not be a problem. When you have a bad bolt it needs to be changed. That would be a WC block that has been played with.

powertech84 Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 17 Oct 2009 Location: Wisconsin Points: 467	Post Options Post Reply Quote powertech84 Report Post Thanks(0) Quote Reply Posted: 19 Feb 2010 at 5:50pm
	Thought i'd update with some pics. one of the tree cracks is noticably higher on one side than the other. The bottom looks good.

Dick L Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Edon Ohio Points: 5087	Post Options Post Reply Quote Dick L Report Post Thanks(0) Quote Reply Posted: 19 Feb 2010 at 7:41pm
	If it were mine in that case I would install a tie bolt. It being a WC block you would drill behind the side plate rather than remove a core plug as in my pictures. The bolt will draw the crack back to where it looks like a hair line crack. It is doubtful it would leak if you just rebuilt the engine and did nothing to the crack. So easy and quick to drill a hole thru the block from one side to the other and tap the out side and tighten the bolt to pull it back and know that it will not be a problem. http://public.fotki.com/DickL/tie_bolt_story/

powertech84 Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 17 Oct 2009 Location: Wisconsin Points: 467	Post Options Post Reply Quote powertech84 Report Post Thanks(0) Quote Reply Posted: 20 Feb 2010 at 1:24pm
	Thanks for the tip, i might give it a try. Sure do figure i'll be quite nervous while drilling though. Seems like one of those things where you only get one shot, or you just made yourself a nice boat anchor.