Branded Posted January 20, 2018 Report Share Posted January 20, 2018 Having found a hairline crack in my engine block in the 49 Wayfarer Convertible I located a complete 49 D30 stamped engine for a replacement. After a total rebuild things are starting to happen. Quote Link to comment Share on other sites More sharing options...
Branded Posted January 20, 2018 Author Report Share Posted January 20, 2018 Out with the old engine. 1 Quote Link to comment Share on other sites More sharing options...
Branded Posted January 20, 2018 Author Report Share Posted January 20, 2018 New engine ready to go in the Wayfarer Quote Link to comment Share on other sites More sharing options...
Branded Posted January 20, 2018 Author Report Share Posted January 20, 2018 Quote Link to comment Share on other sites More sharing options...
Branded Posted January 20, 2018 Author Report Share Posted January 20, 2018 2 Quote Link to comment Share on other sites More sharing options...
knuckleharley Posted January 20, 2018 Report Share Posted January 20, 2018 Don't toss the old block. It can be repaired by sandblasting the area where the crack is to find out where it starts and ends,and then drilling a hole at each end and installing pins and brazing or welding them in place to keep the crack from spreading. Quote Link to comment Share on other sites More sharing options...
palmersparts Posted January 20, 2018 Report Share Posted January 20, 2018 Knuckleharley is right. Ive seen it done on a road grader while the engine was still installed. The machine was only offline for 1.5 days.. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted January 20, 2018 Report Share Posted January 20, 2018 (edited) Edited January 23, 2018 by Dodgeb4ya Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted January 20, 2018 Report Share Posted January 20, 2018 (edited) Saving say a rare or almost any engine block can be done and making the repair invisible too. It is a technical job to do it right though. I stitched (www.locknstitch.com) this recently rebuilt engine block on both sides. ^^^^ These are special cupped/stepped thread pins that pull the crack and pins into each other. It's not cheap to do. Another type of cheaper threaded tapered pins can tend to pressure the crack. Edited January 20, 2018 by Dodgeb4ya Messy post! 1 Quote Link to comment Share on other sites More sharing options...
knuckleharley Posted January 20, 2018 Report Share Posted January 20, 2018 (edited) 1 hour ago, palmersparts said: Knuckleharley is right. Ive seen it done on a road grader while the engine was still installed. The machine was only offline for 1.5 days.. The BEST way to do it is to strip the block and then heat it in an oven before pinning and welding. That removes all the stress,including the stress that caused the crack to begin with if there is any left. It's the best way to weld cast iron,which is full of air pockets and gets even more brittle than normal if you weld it up while it's cold or room temperature. Heat it,weld it,and let it slowly cool and you will have no problems. I've even welded cast iron tangs back on shotguns using a rosebud tip to pre-heat it,and then using a acetylene rich mixture and keeping the line pressures down below 4 psi and using a big tip. Once done and then ground and polished,you couldn't tell it had ever been broken. Edited January 20, 2018 by knuckleharley Quote Link to comment Share on other sites More sharing options...
Branded Posted January 20, 2018 Author Report Share Posted January 20, 2018 The original motor or at least the block and crank will be stored away, it will be kept just in case. Quote Link to comment Share on other sites More sharing options...
classiccarjack Posted January 22, 2018 Report Share Posted January 22, 2018 On 1/20/2018 at 6:33 AM, knuckleharley said: Don't toss the old block. It can be repaired by sandblasting the area where the crack is to find out where it starts and ends,and then drilling a hole at each end and installing pins and brazing or welding them in place to keep the crack from spreading. Lock-N-Stitch works great too... Saved many blocks that way myself. Way easier than welding, looks better too. Nonetheless, saving the block is possible and not impossible nowadays. Quote Link to comment Share on other sites More sharing options...
classiccarjack Posted January 22, 2018 Report Share Posted January 22, 2018 On 1/20/2018 at 8:46 AM, Dodgeb4ya said: Had a similar crack on a 440 block I fixed. I also used Lock-N-Stitch as you showed in your picture. After grinding down and needling the area, you can't see the repair after I repainted the engine block. Good stuff! Quote Link to comment Share on other sites More sharing options...
classiccarjack Posted January 22, 2018 Report Share Posted January 22, 2018 On 1/20/2018 at 8:53 AM, Dodgeb4ya said: Saving say a rare or almost any engine block can be done and making the repair invisible too. It is a technical job to do it right though. I stitched (www.locknstitch.com) this recently rebuilt engine block on both sides. ^^^^ These are special cupped/stepped thread pins that pull the crack and pins into each other. It's not cheap to do. Another type of cheaper threaded tapered pins can tend to pressure the crack. You beat me to it... Great product! Quote Link to comment Share on other sites More sharing options...
Branded Posted January 22, 2018 Author Report Share Posted January 22, 2018 New engine in the engine bay. Quote Link to comment Share on other sites More sharing options...
Branded Posted January 22, 2018 Author Report Share Posted January 22, 2018 Quote Link to comment Share on other sites More sharing options...
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Mopar-Boy Posted October 7, 2020 Report Share Posted October 7, 2020 This motor is gorgeous! Do you happen to know if it is considered a "long block" or is it still a 23 inch engine? Quote Link to comment Share on other sites More sharing options...
greg g Posted October 7, 2020 Report Share Posted October 7, 2020 Dodge engines in cars made in US are 23.5, Canada manufactured cars are 25 inch. Quote Link to comment Share on other sites More sharing options...
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