Top Dragster heads- bad day at the track!

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Blown methanol injected 632cid big block Ford. Last year it was running 6.5 second 200mph quarters. Broke a billet crank at end of year and first run in Bay Town TX this year-oops. Good friend of mine is owner/wrench and his wife drives. NHRA Top Dragster [not top fuel] is an et class race that must not run faster than 6 seconds, 40 fastest make the field and rest go home. Fastest qualifiers have lane choice. Buddy was running naturally aspirated year before last and had troubles making the field depending who showed up. Blower installed last year and making the field was easier except for learning curve on blower motors breaking stuff!Recommended procedure is to preheat 350 degrees, weld hot, post heat 350 and cool slowly. I follow only because it works! Syncrowave 250, 2%lanth 3/32, A356 filler. OH forgot to mention, the welding was the easy part!Peter Attached ImagesEquipment:2  old paws2  eyes (that don't look so good)1  bad back
Reply:last picsEquipment:2  old paws2  eyes (that don't look so good)1  bad back
Reply:That's very good work. Looked pretty ugly before you fixed it! Holy smokes!
Reply:I always love seeing the magic you can do on these sorts of projects. I'm guessing you've been busy lately since I haven't been seeing you post much. That's not a bad thing..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:ThanksPeterEquipment:2  old paws2  eyes (that don't look so good)1  bad back
Reply:Thanks, yea been busy.PeterEquipment:2  old paws2  eyes (that don't look so good)1  bad back
Reply:Awesome as always Peter and good seeing you.  Hope all is well.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:You make this forum legit.
Reply:Damn that comustion chamber was ate up. What causes that? Detonation? Ive hopped up motors and my cousin is a Sprint car racer and never seen a combustion chamber look all f'd up like that after a tear down. had a exhaust valve crack and open like a slice of pizza once.HH140---------------------------https://www.facebook.com/brandon.pike.9
Reply:Out of curiousity sake. What damage was done to the cyl walls and rods with that " stuff " floatin around in the cyl at high revs?Miller thunderbolt 250Decastar 135ERecovering tool-o-holic ESAB OAI have been interested or involved in Electrical, Fire Alarm, Auto, Marine, Welding, Electronics ETC to name a just a few. So YES you can own too many tools.
Reply:How do you do the final CC ? Do you do it by hand in the chamber or with seat depth ? Been too many years.Seems we set the depth with an indicator before the final angle was ground and sandpaper rolled the shroud area for that final little bit. I had gotten out of it about the time Holley introduced the Dominator series . The only blowers we ever fooled with were in the back of the van in the pits( a field somewhere in the Carolinas) Bubble gumTooth pixDuct tapeBlack glueGBMF hammerScrew gun --bad battery (see above)
Reply:Man that is nice work. I guess it was more cost effective to repair than replace ? I see something like that come off a car, I'm thinking no way that can be fixed. Again, awesome work.
Reply:Originally Posted by duaneb55Awesome as always Peter and good seeing you.  Hope all is well.
Reply:LOL. Yeah. I now what it CC'ing is, did a bunch (pre email version) but to get the chamber to the same CC are you setting the valve deeper in the seat or removing material from the chamber. I seem to recall setting the depth of the valves equally and dealing with volume difference with a die grinder.Oh she was a huffer. Bubble gumTooth pixDuct tapeBlack glueGBMF hammerScrew gun --bad battery (see above)
Reply:Same beautiful work as always. Good see a post from you.Millermatic 252XMT 304'sDynasty 280DXHypertherm PowerMax 1250Miller Trailblazer 302 EFIOptima PulserXR feeder and XR Edge gun and more athttp://members.dslextreme.com/users/waynecook/index.htm
Reply:You get all the fun jobs.......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:Love your work Peter. Glad to see you are still visiting us here !!!!PS. Haven't had any problems with the work you did for me...Thanks again.
Reply:Originally Posted by BurpeeLOL. Yeah. I now what it CC'ing is, did a bunch (pre email version) but to get the chamber to the same CC are you setting the valve deeper in the seat or removing material from the chamber. I seem to recall setting the depth of the valves equally and dealing with volume difference with a die grinder.Oh she was a huffer.