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Engine/Transmission (1998.5 - 2002) Cracked 53 Block-Lock n STITCHED!

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Engine/Transmission (1994 - 1998) our trucks could be Nissan

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Well, we did it-almost.

If the block was laying on the floor, this is a simple operation. However, my hat is of to you guys who managed it in the truck.

I was to the point of ready to take the engine out, when we stumbled upon a neighbor who has been Lock n Stitching everything for years. He had never done a 53 block, but gave it a shot.



He stood on a cement block, between the core support(radiator removed for cleaning) and the front of the engine.

He then bent down and went to work. No problem. He said he'd be willing to do more, if you want him to do yours in the Ohio, PA region, email me.



We also made a jig for the tap to keep it true. The taps are expensive and fragile. Order two, you will need both of them for a 4" crack.



Even with the price of the kit, the extra tap, buying right angle air tools, enlisting the help of a qualified mechanic, we are wayyyyy under $1000.



If it holds, I think this will be the common fix.



Our jig is on the left, the drill jig is on the right.
 
JBlock said:
Did he plug weld the crack??

No - no welding involved.



Lonck n stitch fixes a crack by drilling, tapping and inserting along the crack line specially designed screw-plugs that reinforce the cracked area, seal the leak, and prevent further expansion of the crack.



Welding will heat stress the metal leading to more cracks. The lock n stitch method preserves the soft temper of the cast iron block since no welding is used.
 
Very interesting! As one w/ a '53' that has 180K on it, I'm wondering when mine will crack. How is the drill jig held securely to the block to drill the holes? Would it be possible to post a picture of a plug?
 
How expensive is the material, I got about 20 inch crack on antique packard block to repair come day.



How ong was the crack you repairs, I guessing 12 inches.



Could you e-mail some larger pictures



Private email sent
 
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JBlock... and others.



I was taught by an old machinest back in the 70s to repair cracks using brass bolts. I saw him repair the combustion chamber of a diesel head with brass bolts... and it held!!! I sure wouldn't be worried about it holding on the outside of a block! The principle is the same, but the materials sure are cheaper!!! You can buy a BUNCH of brass bolts for the price of the fancy kit!!!



I was in a big machine shop yesterday afternoon. They were repairing a head with Stick-n-Lock. I mentioned to the head of the shop about using brass screws. He said he was confident it would work... more than anything, I am just using what is readily available instead of something commercial.



If you feel better using the commercial kit... go for it! It will do a good job for a lot less than replacing the block!!! However, there are cheaper ways that will still give great results.



Steve Keim
 
You might want to look at a casting crack repair process that restores some tensile strength to the crack area with inserts that bridge the crack. HERE is one such process - there are a number of others.



Rusty
 
Metal stitching work great for me. I had a 3" crack and was able to use the lock-n-stitch method without removing the twins :D. Did it from underneath using a drill motor with a pivoting handle. I used that same drill motor for drilling, spot-facing and tapping. There was no way to drill and hold the spacing jig at the same time so I marked the drill spot using a center punch that fit the spacing jig with 1 hand and then drilled. It wasn’t dead-on every time but the Lock-n-Stitch method is pretty forgiving. At first I was convinced that "hand tapping" was the safer way to go but after breaking 2 taps and stripping out one hole I finally got it through my thick skull that power tapping was a better way to go. It worked perfect. Power taped the remaining holes without any problems. The guys at Lock-n-Stitch were very helpful. Awesome company! My total cost for the fix was around $500. 00. Not bad at all concidering the other options :eek: Even if my truck was under warranty I would rather do the metal stitching than let those monkeys at dodge pull my engine and do a short block. :rolleyes:
 
How long?

Metal stitching work great for me. I had a 3" crack and was able to use the lock-n-stitch method without removing the twins :D. Did it from underneath using a drill motor with a pivoting handle. I used that same drill motor for drilling, spot-facing and tapping. There was no way to drill and hold the spacing jig at the same time so I marked the drill spot using a center punch that fit the spacing jig with 1 hand and then drilled. It wasn’t dead-on every time but the Lock-n-Stitch method is pretty forgiving. At first I was convinced that "hand tapping" was the safer way to go but after breaking 2 taps and stripping out one hole I finally got it through my thick skull that power tapping was a better way to go. It worked perfect. Power taped the remaining holes without any problems. The guys at Lock-n-Stitch were very helpful. Awesome company! My total cost for the fix was around $500. 00. Not bad at all concidering the other options :eek: Even if my truck was under warranty I would rather do the metal stitching than let those monkeys at dodge pull my engine and do a short block. :rolleyes:





How long did it take from start to finish? wanna do mine for some extra cash, if it was that EZ??? PM me if interested.

Thanks in advance



Joe.
 
We will have to get Cliffman back on this thread because the block just keeps on crackin. Cliffman has it all apart again waiting for Loc n stitch to come out and see if they can do better.
 
Yep, that's right. We started with a 3" crack. That held for about a month or so. Then, it cracked another 8" further towards the front. Had to pull the twins to stitch. That didn't hold at all. Leaked on the first test drive. Poured some "Bars" stop leak in it and that sealed it up pretty good with just a little drip. That lasted for about 6 mouths. Now it's back leaking pretty bad. Pulled the turbo's and now it's cracked even further. I have Lock-n-stitch coming out to take a look. I'll keep you guys posted. Sorry I didn't update this thread sooner.
 
use the lock-n-stitch method without removing the twins :D. Did it from underneath using a drill motor with a pivoting handle. I used that same drill motor for drilling, spot-facing and tapping. There was no way to drill and hold the spacing jig at the same time so I marked the drill spot using a center punch that fit the spacing jig with 1 hand and then drilled. It wasn’t dead-on every time but the Lock-n-Stitch method is pretty forgiving.





No offense, Cliffman, but after doing one, I can't believe you did it without removing turbos, etc.



I think maybe its not quite as forgiving as you thought it was.



I understand the crack can continue, but no way it should have leaked at the stitching.



Maybe your block was abnormally weak/thin??



I hate 53 blocks.
 
I gave up on the first time. . Mine leaked right away... when I heard cliffman had another crack 3" away from the other, I knew the thinness of the block was the problem... When I did the block replacement, I cut out the piece where the crack was for a souvenier. On the inside of the stitching, I noticed sometimes I didn't get it overlapped so that was why it leaked...



But now, I have a Mexican block that is bored . 020 over with a hybrid Turbo. Have about 400 hp now. Have towed pretty hard and no problems... Basically have a new truck for $7K... Had to rebuild my 6 Speed also for $3K...

Guess I am keeping the truck for a bit... lol



Anyone want my Lock-N-Stitch, PM me to discuss price.
 
Eric has the problem figured out! Lock-N-Stitch or brass screws as I mentioned earlier work fine... if the material is thick enough to thread and hold the bolt. For a cracked antique block that probably froze, it should work fine. But, some times the 53 blocks are just so thin that there isn't anything left to repair!!!



Steve Keim
 
When my block cracked... . I was gonna do the Lock n Stitch, but I was told by numerous people that it is a temporary fix & the block will still crack further along the stressed area. I decided against it & when I took my engine to Cummins for the block replacement..... 3 techs walked out to help me unload the pallet & asked "Is it a 53 block".
 
I looked a couple weeks ago to see if I had a 53 block, I looked everywhere they mention where it would be stamped but I couldn't find any numbers.



Maybe that's good news. I wonder if the dealer can tell you if you give them your vin ?
 
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