Welding 4130
This is where i got my info. I'm not sure who is correct but I think I will stick to the er70-s2.
quote
"Closing Suggestion
When welding 4130 chrome moly in the normalized condition, AWS ER70S-2 filler metal, with its low carbon content is the proper choice. Make sufficiently large fillets and make them flat, not concave. If the part is to be heat-treated after welding, then a filler metal matching the 4130 chemistry should be employed. This requires preheat and special precautions to avoid cracking. "
__________________
87 gn, Champion heads, 4 billet caps and a girdle. Turbonetics T66 4 bolt with custom 4" downpipe , FAST B/B W/WB02, PTE 210 roller cam, th400 w/trans brake. 525 RWHP @21 psi on a mustang dyno.
Current best et 1.465 60',4.176 @83.33 330', 6.455@105.81 1/8 mile.
http://www.youtube.com/watch?v=OXNeK7HIYNY
In process of SBC turbo build with 76mm Turbo