 Dropped intake seat, Made a mess. |
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| TrailerParkBoy |
 Mar 13 2023, 09:54 AM
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#1
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Newbie  Group: Members Posts: 8 Joined: 7-February 23 From: PNW Member No.: 27,145 Region Association: Pacific Northwest  |
Intake seat let go. Ended up resting at angle to valve (odd location, usually they sit flat if loose?) which ended up taking a chunk from top of piston and scuffing cam lobe from pressure created. Much work ahead of us this weekend :-(
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| Brett W |
Mar 13 2023, 08:30 PM
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#2
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Advanced Member Group: Members Posts: 2,859 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None 
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Be interesting to see if the rod bearings are beat to death. The tops of the piston have all the hallmarks of detonation/preignition.
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Posts in this topic
TrailerParkBoy Dropped intake seat Mar 13 2023, 09:54 AM
Root_Werks Oops! Yup, doesn't look good, probably di... Mar 13 2023, 10:14 AM dr914@autoatlanta.com time for two new heads, these things are now 50 ye... Mar 13 2023, 11:25 AM r_towle That looks wrong in a few ways.
Valve,,, obvious
T... Mar 13 2023, 01:59 PM brant Looks like it could of been lean as mentioned
Too... Mar 13 2023, 02:54 PM 914sgofast2 The top of that piston looks really bad. Did you ... Mar 13 2023, 03:42 PM r_towle It’s possible that detonation may have caused th... Mar 13 2023, 04:08 PM TrailerParkBoy Thank you for the eye. Great questions. I’ll gra... Mar 13 2023, 06:28 PM r_towle What budget do you have?
I think AA makes new head... Mar 13 2023, 06:37 PM brant I’m guessing it was not running right ? Mar 13 2023, 07:04 PM
TrailerParkBoy
I’m guessing it was not running right ?
Yes, ... Mar 14 2023, 09:38 AM Superhawk996
The tops of the piston have all the hallmarks of ... Mar 14 2023, 06:01 PM gnomefabtech Looks to me like that valve seat did a dance in th... Mar 14 2023, 11:04 AM gandalf_025 I had an intake valve seat drop in a Corvair Turbo... Mar 14 2023, 11:15 AM bludden Happened to me a week and a half after I bought my... Mar 14 2023, 06:20 PM emerygt350 Again, reminds me of the importance of AFR and CHT... Mar 15 2023, 06:57 AM Superhawk996
Again, reminds me of the importance of AFR and CH... Mar 15 2023, 08:35 AM majkos1 engine original fuel injection or carb? Mar 15 2023, 07:08 AM technicalninja
Again, reminds me of the importance of AFR and C... Mar 16 2023, 02:17 PM rjames Agree that a wideband sensor is important, especia... Mar 16 2023, 03:38 PM gnomefabtech How do the other cylinders look? It's possibl... Mar 16 2023, 10:08 PM TrailerParkBoy Pulled it apart and this is what we found, remembe... Mar 20 2023, 10:17 AM gnomefabtech Dayum! That's a crazy failure. Mar 20 2023, 07:18 PM r_towle Lean, detonation evidence on the other cylinder.
W... Mar 20 2023, 07:38 PM Dave_Darling That looks depressingly familiar.
Could be caused... Mar 20 2023, 10:05 PM |
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