Cool. As far as your welds go, remember:

"Your only as good as your tools"

I was welding with a flux core wire welder and the welds sealed nice, but they were ugly. I then used my buddy's gas mig welder and holy smokes, I look like a pro! I am a first time welder (meaning just started to practice on scrap before I do my custom kit).

 

Did the gas help cut down on the spatter?

 

It leaves no spatter at all, like ZERO.

 

no, i was in a motorcycle accident 2 weeks ago, and have not been able to do anything considering i broke my right arm

i will be using gas after this, the flux core was just too dirty...haha, the gas just provides greater sheidling of the weld pool, which makes a stronger, cleaner weld, with less spatter...i really wish i could get access to a TIG and weld with that, my school has some, but professors said no, even though i took the welding classes

 

You must be dreaming man, I weld MIG and there is plenty of spatter. 75/25 mix gas and you will never get rid of the spatter unless you use a TIG. I can weld in a short sleeve shirt with my gloves off with the tig perfectly fine without worrying about any spatter. Although I never even tried to weld with just flux-core I've heard of people who have luck using flux wire and 75/25 gas.

Will, 9.44 is pretty fast and you're going to need more than just power to get you there. With a T56 its a race for suspension rather than power. With turbos that big your going to have trouble keeping them spooled, especially with the hydraulic roller. If I were you I'd get a solid cam somewhere in the 250/240s duration at .050/

 

By spatter i am talking about the little "grapes" of metal that fly off everywhere. If this is what we are talking about then i am not dreaming. No spatter at all.

 

MIG is going to naturally have spatter with a proper weld.

 

I dont think so. Spatter is common with flux core because the flux is in the metal rod. The blowing out of the flux during welding causes particle of metal rod to fly off and leave spatter. Thats my understanding. With gas, the gas is shielding the metal wire externally; therefor there is no spatter. Feel free to post pics of your welds and i'll do so as well tonight. After seeing mine you may want a new welder...

 

So what magical welder do you own? Spatter doesn't mean that theres chunks of metal surrounding your weld. The spatter im talking about is the metal that flies off as your welding and falls off. Mig is a fast process which melts the wire into droplets before it actually touches the metal leaving a quick gap which makes that frying sound which makes spatter. There are gels etc that help lower it but not eliminate it. Tig however doesnt send metal down and you add it manually.

* 100% CO2 -Lowest price, generally greatest penetration, and higher levels of spatter. Limited to short circuit and globular transfer.
* 75% Argon - 25% CO2 -Higher price, most commonly used by home hobbyist and light fabricator, lower levels of spatter and flatter weld bead than 100% CO2. Limited to short circuit and globular transfer.
* 85% Argon - 15% CO2-Higher price, most commonly used by fabricators, with a good combination of lower spatter levels and excellent penetration for heavier plate applications and with steels that have more mill scale. Can be used in short circuit, globular, pulse and spray transfer.
* 90% Argon - 10% CO2- Higher price, most commonly used by fabricators, with a good combination of lower spatter levels and good penetration for a wide variety of steel plate applications. Can be used in short circuit, globular, pulse and spray transfer.

 

When I weld of course you see sparks of material flying off, but when your done welding the bead and look at the pipe you just welded, there is only a nice seam (or bead) of weld. No excess grapes of metal particles all over the place on the pipe. With flux core grapes are all over the pipe you welded. I can weld comfortable in a short sleeve shirt with the mig gas, but mig flux core can get uncomfortable. As far as tig, you pretty much comparing soldering By that I mean heating up an area and then liquifying the metal and moving it.

 

Metal flying off = spatter, theres no other word for it.

 

You can think that if you want. By the way, feel free to actually look at Will's welds. I see spatter on the tubes. Based on this I know Will is talking about grapes (SPATTER) all over the work piece. To answer his question again, there ZERO spatter on the work piece after welding. I was using 75/25 for reference.

 

I can think that?

 

I have talked to a couple of the welders at my work and they only call spatter the excess left on the work piece. When they here someone complain about spatter they think of someone complaining about grapes all over the part they finished welding, thus resulting in an ugly finish. Your playing simantics and just being arguementative. If your arent going to contribute to Will's thread then feel free to remove yourself from it.

Will, if you want me to email you a few pics then pm me.

 

mig produces spatter no matter what, and what you are talking about as far as the liquified metal connecting the arc to the metal is called "spray arc" welding, and canonly be done with very high amps, and very high volts. the most common MIG welding is "short arc" where the wire actually touches the workpiece and creates a short cicuit condition, and mets the filler metal, as well as the surrounding work peice.

Comparing TIG to soldering is a joke, with tig, the workpeice, as well as the filler metal is all melted, soldering only melts the filler metal (solder) TIG is most like oxy/acet. welding more than anything else.

the t-70's should spool under 4k rpm, and when shifting at 6800 rpm, i wont ever be under 4k rpm, so i see no need to go solid roller setup. The t-70 is still a small frame t4 turbo, and spools almost identical to a pt-61...as far as suspension, you are correct, thats gonna be a whole challenge all in itself