Cast iron crack repair.

Rimmo · Post by **Rimmo** » Mon Sep 25, 2017 4:58 am

Stitching or spray weld, which is better for repairing cracked cast iron in your experience and how long does the repair last. This is for a crack on the outside of a block and starting in a threaded hole. Also if spray welding is used for this type of repair on a machined block does the heat distort the machined bore.

mag2555 · Post by **mag2555** » Mon Sep 25, 2017 6:34 am

What are we talking for a threaded hole, a high stress location like a motor mount or bell housing?

racear2865 · Post by **racear2865** » Mon Sep 25, 2017 12:25 pm

My opinion 3 methods Muggy weld, Eazy weld, or drill and stitch. Spray weld will not hold. Have done all three.
reed

pamotorman · Post by **pamotorman** » Mon Sep 25, 2017 1:21 pm

I did a SBC boat engine that had cracks on both sides of the tappet chamber from freezing. they were stick welded with a nickel rod and had no problems.

Post by **autogear** » Mon Sep 25, 2017 3:50 pm

STITCH-N-LOCK worked the best for me. I mean if you know someone who can furnace braze....maybe

Rimmo · Post by **Rimmo** » Mon Sep 25, 2017 7:00 pm

mag2555 wrote:What are we talking for a threaded hole, a high stress location like a motor mount or bell housing?

Not a high stress location. The crack starts in the drain plug hole.

ProPower engines · Post by **ProPower engines** » Mon Sep 25, 2017 9:08 pm

Rimmo wrote:
mag2555 wrote:What are we talking for a threaded hole, a high stress location like a motor mount or bell housing?
Not a high stress location. The crack starts in the drain plug hole.

Lock N Stitch would be the best option there.
No stressed area and easy to do and make look like it never happened

Scotty · Post by **Scotty** » Mon Sep 25, 2017 9:49 pm

Tapered stich repair plugs would be my first choice for that type of repair.

mag2555 · Post by **mag2555** » Tue Sep 26, 2017 6:15 am

X3 then on the plug & stich repair assisted with some fluid weld from Goodson supply, or Sliverseal.

Rimmo · Post by **Rimmo** » Wed Sep 27, 2017 2:53 am

Thanks for the input guy's. Much appreciated. I'll go with a stitch repair.

BILL-C · Post by **BILL-C** » Sun Oct 01, 2017 8:41 am

I've made hundreds of sucessful repairs with Lock-n-Stitch crack repair pins.

Dan Timberlake · Post by **Dan Timberlake** » Sun Oct 01, 2017 8:44 am

Coolant drain plug? Do you know what happened?

Don Terrill’s Speed-Talk

Cast iron crack repair.

Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.

Re: Cast iron crack repair.