Cast Iron Manifold

[normality78]

Guy's

I do know Cast Iron manifold advantage is on its strength. But i would like to know this. Is it very tough or difficult to unweld flange from cast iron manifold?

[jfallen]

Cutting a flange off any manifold is easy, but welding with Cast iron can be difficult, so welding a new flange on may prove problematic.

Cheers
Jordan

[Screamn_Sleeka]

Cast Iron? you mean steal? iron rusts like crazy, wouldnt last a day.

Steal heads weld up perfectly, always better than alloy.

[feral4mr2]

i got a mild steel turbo flange i made brazed to a cut cast 4age manifold. very strong. braze mild steel to cast, do not weld.

[LeeRoy]

The problem with cast stuff is the metal is full of impurity making the fusion of another plate or whatever else more difficult than if you were working with a good pure material. It is possible as mentioned above though.

Have you thought about just having an adapter plate made up that bolts to the cast manifold and the new turbo or whatever it is that you plan on attaching.

[jfallen]

Cast Iron? you mean steal? iron rusts like crazy, wouldnt last a day.

I think you'll find all standard turbo and most non-turbo exhaust manifolds are made out of cast Iron

Jordan

[o_man_ra23]

Cast Iron? you mean steal? iron rusts like crazy, wouldnt last a day.

Steal heads weld up perfectly, always better than alloy.

I have never seen a Steel head... can you give me an example please?? I have only ever heard of Cast Iron, aluminium alloy, and magnesium alloy.

I just dont think you have a clue as to the material properties of Cast Iron, as there is actually more carbon in it than steel, by about 10 times the percentage, which makes it more corrosion resistant, hence why it is not often painted!!

[jeffro ra28]

Cast Iron? you mean steal? iron rusts like crazy, wouldnt last a day.

Steal heads weld up perfectly, always better than alloy.

If we are talking heads. No, they are cast iron as O-man has pointed out. And cast iron heads are a bitch to weld. Likewise with blocks. May i ask, have you actually ever tried?

[roadsailing]

i'm sorry, but i wouldn;t believe anything from someone who spells it "steal" instead of "steel"

there is such a beast as cast steel, but you won;t find it on a car engine very often.

cast iron is used because it is cheap and reliable, and thats about it.

[Kyosho]

Cast Iron? you mean steal? iron rusts like crazy, wouldnt last a day.

Steal heads weld up perfectly, always better than alloy.

The only material out there that rusts, is iron.
Rust is iron oxide.

[normality78]

Have you thought about just having an adapter plate made up that bolts to the cast manifold and the new turbo or whatever it is that you plan on attaching.

actually its not the turbo flange i wanted to cut off but the header flange

[feral4mr2]

call into your local autoparts store, ask them to order you a head flange from lukey/walker to suit your engine. they sell head flanges to suit most popular engines seperate to the extractors they make.

[oldcorollas]

it can be done, but you are better off starting with a steel flange, and getting it laser or water cut or whatever it is they do these days

to weld cast iron there are a few methods.. the main issue is that it has like 4-5% carbon, and when you mix with low carbon steel (0.2 or 0.3%?) you go thru a nasty area where you get lots of brittle phases..

i have heard of people heating for a while with an oxy torch to burn out the carbon.. or, welding using high chromium and nickel (ie, stainless steel rods) to trap the carbon....

but if you are making the rest of the manifold anyway, it is probably much better in the long run to start with a fresh flange...
chances are you can buy one off the shelf somewhere anyway.

[normality78]

alright. Tks for everyone inputs.

[Screamn_Sleeka]

Sorry guys, i read HEAD instead of MANIFOLD, i r retard.

The only material out there that rusts, is iron.
Rust is iron oxide.

All metals rust, expcet Gold, Platinum and Palladium, the majority of rust on iron or steals is Iron oxide, yes thanks for that.