welding on head....

[XFlow_Fairlane]

well for a low dollar old skool look I am thinking of welding on two flanges on littel tube risers to mount two more factory carb spacers. I have nickel rod to weld this with and was using the game plan of welding the tube on after grinding it to fit. then running a hole saw down into the tube to open the intake for it. the linkage would still be progressie and I hae that worked out (gotta love the early pull style throttle.) so will this be a sound plan of attack? I know to weld slowly and take my time to let it cool....basicly skip weld it together.

nick

 

[addo]

Peen the dabs of weld as you go with ample centre punching to stress relieve. Consider extending the tubes into the head; just tack some locating spots of weld on the outside. Cutting the curve into the bottom of the down tubes is relatively easy - sketch, trim, check on the log outside.

Adam.

p.s. Make 'em long for a ram effect. That would be hip.

 

[MustangSix]

We did a lot of welding on blocks last year, mostly not successful. Things we learned:

- Preheat is good if you can do it. Weld over a hot charcoal fire, put the head in you oven at 500F, heat weld area with a gas torch.....it really helps. Allow to cool slowly.

- or, weld a little at a time, peaning as you go. Don't weld so much as to make the casting too hot.

- use a good nickel rod. Brazing with brass rod or silver will do if joining a disimilar metal to iron.

- Machinability will vary between the weld and the iron, with the weld sometimes being very hard to machine.

 

[XFlow_Fairlane]

well my dad weldedwelds iron heads for caterpillar in the factory for repairs (mainly repairing broken taps in holes after they are removed) when I tossed a rod in my 2.3L turbo we welded the block up with the nickel rod he got from work and a small hunk of .25" mild steel. we had no problems with it ever cracking. we welded very short segments at a time (about .25" or so) and let it cool for a few minutes between sections. I was plaing on some black pipe for the "runners" with a mild steel flange on the top. by drilling the hole out as the final step I hope to have that extra material to soak extra heat.

nick

 

[MustangSix]

It takes practice and you can get good results. I think most of the problems we encountered stemmed from trying to weld so much of the block. You build up stress in the iron that just wants to crack open again.

It's hard to thwart the laws of physics and metallurgy, but we learned a lot along the way.

 

[XFlow_Fairlane]

hey jack on the block welding you did it was jsut for the extra room right? would the aussie gasket seal onteh us block if you just weled a little pocket onteh sides only? thinking more localized heat and in smaller sections of the block instead of setting stress up in the whole thing.

nick

 

[MustangSix]

After destroying many blocks we figured out how to do it without welding. I'll post the pics once I'm sure this engine will run without overheating.