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Discussion Starter · #1 ·
ok CJDAVE i'm trustin u more than anyone here, so here it goes, my cousins got an 84 dodge ram full size pickup, with a 225 slant 6 in it, it got really noisy the other night and today we noticed that the exhaust manifolds got a crack in it, instead of getting a new one can it be welded or fixed someother way other than replacing?? thanks!
(\/)ikey

(\/)ikey
1988 Wrangler Laredo 4.2L w/5spd Manual
1995 Wrangler 2.5L w/ 5spd Manual-dixie horn
 

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/wwwthreads_images/icons/crazy.gif Mikey....they have some new cast iron welding electrode now that works miracles. What you do is weld about 3/4" and then you quit and peen the heck out of it with the chipping hammer...then repeat. It's weldable...very weldable...but it needs to be on the head when you do it, either that one or a junk head./wwwthreads_images/icons/crazy.gif

CJDave
I never believe any statistics unless my moonguys /wwwthreads_images/icons/crazy.gif/wwwthreads_images/icons/wink.gif made 'em up themselves.
 

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Pardon my ignorance, but I don't weld, so I'm full of questions about this...

Is that one of the rods that you have to heat the cast iron up before you use it?
Do you still have to drill holes at the beginning and end of the crack to stop it with the new rods?
Who makes them and how much do they go for?....
Any special part number that works best?

I've decided I'm going to teach my self to weld while I'm off with my back. It's not heavy lifting, and I don't have to exert any undue strain on myself to weld, so I'm going to learn...

Thanks, Aaron.

I'm desperately trying to figure out why kamikaze pilots wore helmets...
 

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/wwwthreads_images/icons/smile.gif Nope...you don't heat the casting....that's why you must stress-relieve as you go with the peening. That is NI rod...use 1/8" dia. Yes, it is a good idea to drill each end of the crack to stop it. The rod is fairly expensive....I can't recall the amount now, but peanuts compared to brazing and other cast repair methods. They even have....get this...electric bronze. Stick electrode that is bronze. We used it for building up huge bronze propellers that had chunks knocked out or were badly worn. The welding supply store will have NI rod. Don't use it for training. It's wierd to run it, and it's for a more advanced welder. Welding is just a matter of the right rod, the right heat, and practice with a guy watching you at first as a coach, then he hops out and slams the door and you are solo./wwwthreads_images/icons/crazy.gifWelding thinner materials is all about heat control and the rod motion that you make to control the puddle without burning through. The rod..the machine..the heat..the motion. Those four things./wwwthreads_images/icons/wink.gif

CJDave
I never believe any statistics unless my moonguys /wwwthreads_images/icons/crazy.gif/wwwthreads_images/icons/wink.gif made 'em up themselves.
 

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The Rod, The Heat, The Motion.... It don't sound like welding we are talking about....

I need to drag the little black book out we keep having this conversation....

I've got a little Hobart MIG welder in the garage when I have to do something myself. One of the fabrication guys set it up the other day, and I've been playing around with it. I haven't changed any of his settings, and it seems to do OK...
I'm pretty well versed in metallurgy, so I know what's supposed to happen, I just have had no luck in getting it TO happen...
This is wasted time if all I get done is BS on the BBS and eat pain pills, so I thought welding was a good thing to learn.... It can't hurt!
I've been putting it off for 25 years, so I think it's high time...

The guy that brought the welder over and set it up had a helmet that the lens went dark by it's self! One of the coolest things I have ever seen!
You can't get flash blinded, it goes dark before the light can cook your retinas! It's so cool!
And it goes clear again in about two seconds after you stop welding.
He says all of the guys at the shop have them, and they have been out for 10 years or more.
I had never seen one! They are COOL! I got to get one if I learn to weld....

I have the old, 'Bob yo' head' and can't see anything while loosing your place with all of the movement type of helmet...
My stick welding still looks like bird sh*t and dirt! And I'm not exaggerating one bit.
I have a pretty good sized Miller, and I should do better than this. I'm not practicing enough I don't think. The MIG welder is SO much easier...

I'm desperately trying to figure out why kamikaze pilots wore helmets...
 

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/wwwthreads_images/icons/tongue.gif I have taught several guys who worked for me to weld, and they ended up pipeline welders.....you know...where the pipe had the BOTTOM side to weld....UGH! EVERYBODY can weld till it comes to the bottom, then that's a different story, heh heh. A nice DC stick machine would be good, or even high frequency AC stick. Start with stuff that has lots of seam and is not critical so you aren't starting and stopping so much. Then get hours of practice....and that's it. ALTHOUGH...let me be honest here.....a guy with your knowledge usually has TEN guys he can use for burning rod, and maybe one that can really think.....so it is usually not an option as to who burns rod and who lays out the next piece of work. I hate to say it, but that's how it works. I'm one heck of a welder, but when was between thinking and welding, well,...let's just say I had LOTS of welders./wwwthreads_images/icons/crazy.gif

CJDave
I never believe any statistics unless my moonguys /wwwthreads_images/icons/crazy.gif/wwwthreads_images/icons/wink.gif made 'em up themselves.
 

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Those auto dark lens are cool, so long as you deont let the battery get low!
a bit heavy too for me, as I weld for 8 hours a day...

You have to try a TIG, any kind of weldig is pretty nifty, but man, TIG is the [censored]...

Im not so good at it yet, ( although I did just past the cert tests) but I work with guys who can weld incredibly small stuff neat and clean, Its really impressive

as soon as I have $4000 lying around Im gettinga Miller Synchrowave 351...yeah right...

I need to go back and stick weld just to see whats changed ( I havent done that in years)

oh yeah, to relate this post, TIG is NOT a good way to weld Cast Iron manifolds, I tryed, with the highest NI content filler we had, I couldnt puddle wthout cratering, and I couldnt feed .045 wire fast enough..

stick is better for patching cast, with teh rod Dave has talked about..

OzarkJeep
NW Arkansas, need a CJ rear seat
 
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Discussion Starter · #8 ·
i am still a young wipper snapper, but i still learned the old fashioned way, with a torch, no rod. this helps you learn about forming and controlling a puddle. i think it made a big difference in my welding ability, as you learn to control penetration, as well as what a weld should look like. a lot of people that i have seen that learned only on mig can make great looking welds, but they have no structural integrity to them. they did not learn how to manipulate the metal our how to recognize if they are getting good penetration as the are welding. if you have access to a torch, try it, and you will see what i mean.

dan

/wwwthreads_images/icons/smile.giflet it snow/wwwthreads_images/icons/smile.gif
 

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Our guys have all of the TIG stuff, and they are good at it. TIG really puts out beautiful welds!

Seems you really like TIG! Where you trying to say it's TITS!

I just never took the time to learn to weld. In the early days, I was always the one laying the stuff out or cutting some tricky what ever...
I just never got any weld time. As the years pasted, we just got busier and busier, and I never had time to learn.
My dad said if it could bolt it together, I could get to the moon with it, but if I had to weld it, I was going to be stuck at home a LONG time...

I'm desperately trying to figure out why kamikaze pilots wore helmets...
 
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Discussion Starter · #10 ·
actually i meant oxy-acetalene torch. but TIG does make for beautiful welds once it is mastered. i guess i needed to clarify better, i mean really old fashioned.

dan
NECESSITY IS THE MOTHER OF INVENTION
/wwwthreads_images/icons/cool.gifLET IT SNOW/wwwthreads_images/icons/cool.gif
 

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thats my next home shop p[urchase, Oxy Acetlene rig

I think its pretty mutli-use, Il buy it then take 7 years to be good enough to acutally weld with it...

OzarkJeep
NW Arkansas, need a CJ rear seat
 

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You think you can learn in 7 years? Will you teach me then?
I'm not having much luck learning on my own.
The local collage has a class I'm looking in to.

If Chris Columbus "Discovered" America (with 25 million already here), Can I Go "Discover" Florida?
 
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Discussion Starter · #13 ·
seven years!!! thats a long time, with a little practice you should become proficient in a couple months.

dan
NECESSITY IS THE MOTHER OF INVENTION
/wwwthreads_images/icons/cool.gifLET IT SNOW/wwwthreads_images/icons/cool.gif
 

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that 7 years was a joke derived from the fact that ive ben married 7 years and HAVE YET to realize that " no dont get me anythign for Valentines day, we are broke" actually means"your a *****, you dont make enough money and I hate you..."

actually I picked up basic TIG pretty quick, Gas weld should be SORT of similar...


later


OzarkJeep
NW Arkansas, need a CJ rear seat
 
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