welding in cc's
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Registered User
Joined: Feb 2001
Posts: 878
From: Clovis, NM
welding in cc's
A guy at my shop asked me if I could weld the chamber on a head he has to up the c/r and do some other stuff too.
I thought that was kinda a ricer way to up the c/r like when they throw on 2 head gaskets to lower the c/r.
I hope his head is iron because I only weld steel and iron no alunimium yet.
Any one ever try it?
I know you can just have them milled to up the c/r but over here they dont do machine work like that any where near here, I dont know if he knows any thing about that or not.
I have a 135amp MIG welder loaded with .035'' flux core wire, no gas.
Ricers hardly ever do there own internal engine work, allways want some one else to do it for them. Goes to show how much the general rice population knows.
I thought that was kinda a ricer way to up the c/r like when they throw on 2 head gaskets to lower the c/r.
I hope his head is iron because I only weld steel and iron no alunimium yet.
Any one ever try it?
I know you can just have them milled to up the c/r but over here they dont do machine work like that any where near here, I dont know if he knows any thing about that or not.
I have a 135amp MIG welder loaded with .035'' flux core wire, no gas.
Ricers hardly ever do there own internal engine work, allways want some one else to do it for them. Goes to show how much the general rice population knows.
Registered User
Joined: Jan 2000
Posts: 100
From: W Hartford, CT
Dude,
If all you have is a little flux core MIG, I wouldn't even consider it. Welding up iron heads requires some deliberate pre-heating so you don't crack the head or weld in the process, and some pretty decent amperage which your little welder doesn't have. The flux core makes a mess, so you'll probably have to take the heads completely apart before welding so you just have the bare castings. Besides, the head should be decked after the welding anyways, which you don't have the tools for, to fix some possible warpage, and possibly require honing/machining the valve guides as well.
You could just "butter" it up with multiple passes, but it sounds like you aren't familiar w/ the process, and will most likely destroy the guys heads. Tell him to replace the pistons w/ a set of domed pistons, deck the heads, run a thinner head gasket, and/or make sure his quench is tight.
If all you have is a little flux core MIG, I wouldn't even consider it. Welding up iron heads requires some deliberate pre-heating so you don't crack the head or weld in the process, and some pretty decent amperage which your little welder doesn't have. The flux core makes a mess, so you'll probably have to take the heads completely apart before welding so you just have the bare castings. Besides, the head should be decked after the welding anyways, which you don't have the tools for, to fix some possible warpage, and possibly require honing/machining the valve guides as well.
You could just "butter" it up with multiple passes, but it sounds like you aren't familiar w/ the process, and will most likely destroy the guys heads. Tell him to replace the pistons w/ a set of domed pistons, deck the heads, run a thinner head gasket, and/or make sure his quench is tight.
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Joined: Oct 2002
Posts: 6,518
Welding on cylinder heads is not to be taken lightly. Dude has good advice take it, all of what he said was good.
If it is aluminum then is needs to be heat treated afterwards if it deals with the chambers.
It's not a getto thing to do because some chambers just plain suck so it's better to have them done right. To have this all done you should send it out to someone to do it for you, someone who has done this all before.
There are better ways of bumping the compression and milling is the first one that comes to mind and the easiest one at that.
Bret
If it is aluminum then is needs to be heat treated afterwards if it deals with the chambers.
It's not a getto thing to do because some chambers just plain suck so it's better to have them done right. To have this all done you should send it out to someone to do it for you, someone who has done this all before.
There are better ways of bumping the compression and milling is the first one that comes to mind and the easiest one at that.
Bret
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