park12r
Expert Class
Posts: 124
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posted February 09, 2006 06:49 PM
repair Cylinder Head
sorry about the pic.can this Cylinder Head be repair(where)?anyone selling a 00 Cylinder Head,1 x used 1270 piston
  
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gunner
Needs a life
Posts: 5778
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posted February 09, 2006 07:13 PM
I've fixed lots worse......... One point of caution.. When you have to weld up the seat area and install new seats the seats NEVER lay still again. They seem to be moving all the time after a lot of welding. Food for thought
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osti33
Needs a job
Posts: 2973
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posted February 09, 2006 08:02 PM
Yes, that can be fixed.
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park12r
Expert Class
Posts: 124
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posted February 09, 2006 08:25 PM
the inner part where the valve sits into,chip off(botton right)...can that be fix too?where can i send it to?thanks
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gunner
Needs a life
Posts: 5778
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posted February 09, 2006 08:34 PM
Check Bob Carpenter for that.
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speedfab
Novice Class
Posts: 79
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posted February 09, 2006 10:12 PM
I can fix that, and do so in a way that the seats do not move and come loose. There is a technique to welding cylinder heads to acheive maximum metal density and proper grain structure. PM me if you want it repaired.
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted February 10, 2006 02:51 AM
Its hard to see detail from that pic. But a good tig welder can fix almost anything. Time consuming yes. Un-fixable, i doubt it.
But sometimes a used head is cheeper in the long run.
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gunner
Needs a life
Posts: 5778
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posted February 10, 2006 07:53 AM
Granted a good Tig welder can repair that. But when I was working in a NHRA ProStock Car engine shop we regularly welded all over cylinder heads. We never found a way to keep the seats still in a weld repaired combustion chamber when the seats had been beat out and the erea around and under them had to be repaired. Money and equipment wasn't a factor in that shop either. The difference is we tore those motors apart on a regular basis and checked for that kind of stuff. NO the seats didn't fall out, BUT the filler metal and the casting weren't the same shit (because you can't get the same shit) and they expand and contract at different rates. It can be fixed and it will run again from something like that, but if you run it and inspect it you'll find that the shit has moved. We always sold those type of heads off after the repair. It's a sad day when you lose yur number 1 race motor to something like that. Believe it or not MOST all NHRA ProStock Car guys only have 1 possibly 2 motors in their fleet of motors that are race worthy. They may have 15 motors as we did, but for some reason all the same parts and prep don't always produce the same power. One of the 7 wonders of the world.
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TRNorBRN6001
Needs a job
Posts: 2021
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posted February 10, 2006 08:06 AM
What would something like that cost to fix???? Welding and clean up would
not seem too cheap. Does the process warp the head? Might need to
get it surfaced a touch.
____________
TFA 200MPH CLUB MEMBER!
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park12r
Expert Class
Posts: 124
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posted February 10, 2006 09:21 AM
thanks for all the suggestion really needed that,i will get a used head...i have 46 views but not a single reply at the other site....
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entropy
Moderator
Posts: 8671
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posted February 10, 2006 10:52 PM
quote:
thanks for all the suggestion really needed that,i will get a used head...i have 46 views but not a single reply at the other site....
park,
I junked a head that looked very much like yrs. Lots of folks said: "sure this can be fixed, but... "
I didn't want any "buts" and replaced it.
BTW: don't be too hard on "the other site". Some good, enthusiastic folk over there, but much, much more of a beginner's site. As you found, the hard-core 12 tech info is here.
Another really good source of top shelf motor expertise is suzukihayabusa.org n/j, some really great guys.
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This moderator uses moderation in moderation
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park12r
Expert Class
Posts: 124
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posted February 11, 2006 03:17 AM
will do that ..thanks entropy
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