Welding CR Cummins head

[Sanger]

What is the best material/rod to use to weld a crack on a CR Cummins head?

 

[BanjoDiesel]

To weld cast iron, it needs to be preheated, kept at that constant temp, welded with a nickel rod, then a controlled slow cool. Then it would need re-machined to meet tolerances. Its a big process. Give the guys at Diesel Cast West a call. They are in Portland OR and some town in MInn. They are extremely reasonable on repairing heads. Hope this helps you out.

 

[zstroken]

Noland Heads in Kansas City

https://www.facebook.com/pages/Nolands-Cylinder-Head-Service/117457751649469

 

[Sanger]

I'm not sending the head out for repair, going to do this in-house just wanted to know the best material to use to weld it up.

 

[ramthiscummins]

Make sure you get the proper pre heat, if you don't it won't fuse properly and crack again.

 

[Schrowang]

Pre heat, then use nickel rod, lay in small beads going about an inch at a time, as soon as you cut the arc get your chipping hammer and peen the weld hard, really hard. Cover with leather to slow the cool down.

 

[Sanger]

Thanks for advise I'll be giving it a try.

 

[CorneliusRox]

as soon as you cut the arc get your chipping hammer and peen the weld hard, really hard.

What does the peening do when it's still really hot?

 

[Schrowang]

What does the peening do when it's still really hot?

Helps the weld flex with the cast, helps with the drastically different cooling rates. Just how I was taught to do it.

 

[CorneliusRox]

Helps the weld flex with the cast, helps with the drastically different cooling rates. Just how I was taught to do it.

Good to know. I'll give it a go next time I'm doing something similar.

 

[SixOhh]

yeah, that's interesting info. i do everything i can myself but i don't see myself doing my own head repair like that.