Peter (castweld) Works His Magic Again

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I've been meaning to post this up for awhile now but just kept forgetting to do so.One of the guys at work is building a SBF to put in a Mustang and one of the AFR (Air Flow Research) heads that came as part of the package deal suffered a dropped exhaust valve and the resulting damage.A few e-mails, a couple phone calls and a some time later we made the short trip to Peter's shop where we had the priviledge of watching the Master at work.  Peter was originally going to just so the welding but eventually Peter had to do all the machining.  Turned out the head shop where the owner was going to have the post repair machining done, new seats/guide installed and recontour the combusion chamber (as well as a complete valve job on both heads) couldn't do the first steps.  So, back to Peter it went.I'll let the photos tell the story except to say it was preheated to 350F and reheated as needed in the process and then post heated to 350F and allowed to slow cool for 30+ minutes.  5356 filler but I don't recall the rest of the details.Thanks again to Peter for an awesome job and thanks for looking.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:WOW!!! I have been throwing stuff away that could be repaired! Shows this wasnt his first time doing it, nice work. Mark
Reply:Nice machining job, not for the faint of heart.Leo
Reply:Originally Posted by MarkWVWOW!!! I have been throwing stuff away that could be repaired! Shows this wasnt his first time doing it, nice work. Mark
Reply:Great work.....was wondering what type of torch he used to get (in) the port?my buddy had some vw bug heads that where cracked in there , but couldn't find a torch (I.E pencil torch) with the amp rating to do it........Thanks Red.Lincoln Percision tig 225 (Water cooled)Lincoln 350MP Power mig (with spool gun )Lincoln GXT 250 With Tig  ModuleLincoln Ln-25 Pro Dual PowerCentury 50 plasma cutter.now Lincoln .
Reply:Castwelds got the magic touch for sure .."The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:Originally Posted by Big Red One.Great work.....was wondering what type of torch he used to get (in) the port?my buddy had some vw bug heads that where cracked in there , but couldn't find a torch (I.E pencil torch) with the amp rating to do it........Thanks Red.
Reply:That's an outstanding cleanup to a real mess Peter.Matt
Reply:That certainly was a dinged up mess to start with.  Good job Castweld, and thanks to Duane for showing it to us.Miller Syncrowave 350Millermatic 252/ 30A spoolgunMiller Bobcat 225g w/ 3545 spoolgunLincoln PowerArc4000Lincoln 175 Mig  Lincoln 135 Mig Everlast 250EX TigCentury ac/dc 230 amp stickVictor O/AHypertherm 1000 plasma
Reply:Nice work, Peter; looks like you managed some real low porosity in your deposit there.  Did you have knowledge of what the alloy was to determine the filler rod alloy selected, or did you just make an educated guess to select the 5356?Also, did you do pre and post heating to reduce the weld bead contraction distortion?Thanks for sharing OP
Reply:Nice..Anytime I have to repair Aluminum heads I always use 5356.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:You need an expert machinest also.AWS certified welding inspectorAWS certified welder
Reply:Originally Posted by jakeruNice work, Peter; looks like you managed some real low porosity in your deposit there.  Did you have knowledge of what the alloy was to determine the filler rod alloy selected, or did you just make an educated guess to select the 5356?Also, did you do pre and post heating to reduce the weld bead contraction distortion?Thanks for sharing OP
Reply:i worked at a machine shop building racing engines for 4 years. and some of the stuff that customers brought in was ridiculous. i mean we're machinists, not gods! once had an engine block come in that was split right down the middle. turned that down.
Reply:That is some awe inspiring work castweld (Peter). Very few can do such work as well. Bruce.You get what you put in and people get what they deserve...
Reply:Peter:I have done some of this type of work before, but I would say your finished product looks better than mine.  After the welds were laid down, did you do all the shaping inside the combustion area with a carbide bit and sanding drum, or what?Miller Syncrowave 350Millermatic 252/ 30A spoolgunMiller Bobcat 225g w/ 3545 spoolgunLincoln PowerArc4000Lincoln 175 Mig  Lincoln 135 Mig Everlast 250EX TigCentury ac/dc 230 amp stickVictor O/AHypertherm 1000 plasma
Reply:Originally Posted by DougAustinTXPeter:I have done some of this type of work before, but I would say your finished product looks better than mine.  After the welds were laid down, did you do all the shaping inside the combustion area with a carbide bit and sanding drum, or what?
Reply:Originally Posted by castweldThanksI used a sr20 torch, watercooled flex head. Flexed the head to 180* which does not make as small a profile as a pencil bur exhaust hole was large enough to fit, added filler through flange side of port.Peter