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Can this cyl head be saved?
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#12
07-21-2018, 06:33 PM
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I once had a KTM 400 2 stroke motocrosser (bought used). One day we removed the head for some reason. The combustion chamber was completely dinged up from a previous broken ring rattling around in there. We didn't have a spare or money for one, so we put the dinged up one back on. It ran fine before and after this. Nothing like power wheelies in second, third and fourth.
Edit : after seeing the piston below, I remembered that the piston in the bike was also dinged up on the top from the broken ring. We never removed it. The PO had obviously replaced the rings. Last edited by SRG; 07-24-2018 at 05:38 PM. 
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#13
07-24-2018, 09:53 AM
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Looks like the result of a good over rev. surprised there is anything left of the valve. Bet the piston is in equally good shape.
Chris
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Chris M 73 911 E 89 Carrera
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#14
07-24-2018, 11:49 AM
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Quote:
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David I hope to arrive to my death, late, in love, and a little drunk! Just because I don't care doesn't mean I don't understand... Homer Simpson "That's what's keeping me out of F1.... Too much mental maturity...." N0tt0n Some cause happiness wherever they go; others whenever they go. CHAOS, PANIC, AND DISORDER my work here is done... Live without pretending, Love without depending, Listen without defending, Speak without offending
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#15
07-24-2018, 12:16 PM
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I was told it's Kurt's version of Excalibur.
__________________
- Tony P. Currently - 1984 944 SP2 racer - 1977 911 KM Special vintage racer - 2012 Cayman R (also the wife's) - 2000 Boxster S (now mine) - 1995 993 (garage queen) - 2007 Cayman S (wife's track beast) - 2017 F350 (tow monster) - 2018 Jeep Wrangler Gone but not forgotten - 1989 944S2 - 1979 RX7 - 1986 944 - 1991 944S2 (in car heaven...) - 2001 Chevy Suburban 2500 (FIL's beast now)
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#16
07-24-2018, 12:42 PM
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Have a piston here that would mate, it already did mate with a valve in a Bell 47G5 helicopter when I was spraying an explosive factory in Pa for Gypsy Moth Engine was a 435 Lycoming, never did find the valve, dumped the load and landed OK. https://dorkiphus.net/porsche/images...attach/jpg.gif
__________________
Safety Chair, PCA Potomac Region Retired DE Chair, PCA Potomac Region. Retired Co-Chief Instructor PCA Potomac 2008-2012 1971 914/6 (Factory) 3.2 Track car 1988 911 Targa 1986 944
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#17
07-24-2018, 01:47 PM
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"Dumped the load and landed OK." One of the few I'm guessing. But any landing you can walk away from is a good one, right? Tried to drum up business for you in Oxford over the weekend (a good Navy buddy visited Oxford and was smitten). Told him you were a good realtor, but he backed out. Coward. Even offered to set him up with a really good designer (Tim). So, he went on back to PA. . .
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#18
07-24-2018, 02:18 PM
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Thanks for trying Don, lost a lot of power when that piston ate that valve, lucky it did not break/shatter the piston, that would have been nasty!
__________________
Safety Chair, PCA Potomac Region Retired DE Chair, PCA Potomac Region. Retired Co-Chief Instructor PCA Potomac 2008-2012 1971 914/6 (Factory) 3.2 Track car 1988 911 Targa 1986 944
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#19
07-24-2018, 09:32 PM
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"Dumped the load" is chopper talk for racers "brown stripe"?
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http://vimeo.com/29896988 “Those that can make you believe in absurdities can make you commit atrocities.” Voltaire. "There is grandeur in this view of life...." Darwin. The mountains are calling and I must go. “The earth has music for those who listen” Shakespeare. You Matter. (Until you multiply yourself times the speed of light squared. Then you Energy) “We’ve got lots of theories, we just don’t have the evidence’.
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#20
07-25-2018, 09:54 AM
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Pretty much both correct, cept one tightens enough to turn a dime into copper wire!!
Dirk
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Safety Chair, PCA Potomac Region Retired DE Chair, PCA Potomac Region. Retired Co-Chief Instructor PCA Potomac 2008-2012 1971 914/6 (Factory) 3.2 Track car 1988 911 Targa 1986 944
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