Dropped valves

Teran94 · 2017-09-05 22:13:34

OUCH! :argh: Autopsy photos look like engine was not running lean --- trying to look for any silver lining. Good luck with the new engine & repairs. :) https://cimg4.ibsrv.net/gimg/www.s2ki.com-vbulletin/1128x1504/80-80_20170910_202853_9d47d4ad4923afa51229a7aaca739e6bb90521f2_d5c6d006379fb92bb148e83e193bf3d9eed676da.jpg

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Sep 11, 2017 | 06:13 AM

#11

windhund116

Joined: Sep 2014

Posts: 11,349

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OUCH!

Autopsy photos look like engine was not running lean --- trying to look for any silver lining. Good luck with the new engine & repairs.

Sep 11, 2017 | 08:09 AM

#12

jyeung528

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Joined: Apr 2003

Posts: 8,595

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From: Temple City

Jeezus.

Can you provide more details on the over-rev that caused this?
are you sure it wasn't a 5 to 2?

Sep 11, 2017 | 11:40 AM

#13

Teran94

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Quote:

Originally Posted by jyeung528

Jeezus.

Can you provide more details on the over-rev that caused this?
are you sure it wasn't a 5 to 2?

Honestly I was doing a speed run and so I was at about 9k Rpms when I shifted from 3rd to 2nd..

Sep 11, 2017 | 04:31 PM

#14

bgoetz

Joined: Sep 2008

Posts: 3,730

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Quote:

Originally Posted by Teran94

Honestly I was doing a speed run and so I was at about 9k Rpms when I shifted from 3rd to 2nd..

Did you stay in it? Anytime I have ever done this in any car I have always got back out of it before the clutch fully engaged and have gotten lucky

Sep 12, 2017 | 03:45 AM

#15

Billman250

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Joined: Jul 2002

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From: Long Island, New York

Quote:

Originally Posted by bgoetz

Did you actually drop a valve (i.e the retainer let go) or did you just float that valve into the piston? Typically retainers just don't let go instantaneously

Piston to exhaust valve contact at 10700 or better, 100%.

Likely all intake retainers are fractured. In a case this bad, very tiny cracks may be found on the exhaust retainers.

Sep 12, 2017 | 04:18 AM

#16

freq

Community Organizer

Joined: Nov 2003

Posts: 20,983

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From: in my garage

Quote:

Originally Posted by Teran94

My luck has been pretty bad with all my cars in the past year.

Have you had any luck with bicycles and or skateboards?

Sep 12, 2017 | 05:30 AM

#17

Teran94

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Joined: Sep 2017

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Quote:

Originally Posted by bgoetz

Did you stay in it? Anytime I have ever done this in any car I have always got back out of it before the clutch fully engaged and have gotten lucky

I'm usually pretty good about taking my foot off the gas and onto the clutch if i make a mistake but I couldn't tell you how fast I did it at the time