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> Strat's Car
Gulf91474
post Sep 13 2016, 10:34 AM
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total bummer......Gald you still had a fun weekend..... (IMG:style_emoticons/default/blink.gif)
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veekry9
post Sep 13 2016, 11:13 AM
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Attached Image

Bummer,man. (IMG:style_emoticons/default/unsure.gif)
'Engine seems a quarter down on power'
This is my piston.There are many pistons like it,but this one is mine.
(IMG:style_emoticons/default/mad.gif)
What was the fuel being used at the time of failure?<-
Has the head been inspected for cracking due to the temp spike?
Have the exhaust valve seats become loose?
Have the exhaust valves been cracked from the high egt?
Have any of the other cylinders been damaged by the shrapnel?
Half the time the rod gets loose from the piston and flails around in the crankcase .

http://www.914world.com/bbs2/index.php?sho...293242&st=0
http://www.vw-resource.com/octane.html
http://www.dtic.mil/dtic/tr/fulltext/u2/b807149.pdf
http://www.contactmagazine.com/Issue54/EngineBasics.html
http://diversiorum.org/sape/pilotage/Engines/index.html
Mix/Load/rpm/air temp/altitude.

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jim_hoyland
post Sep 13 2016, 11:41 AM
Post #23


Get that VIN ?
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QUOTE(Krieger @ Sep 13 2016, 08:25 AM) *

Not knowing the situation, this could have been a lot worse. What do the valves and head look like? Maybe you need just one new jug?


I hope you can post a complete autopsy; pics, details, causes. And the extent of replacement parts. Maybe we can learn something from this

Of course, it was great Jim carried on and made the RRC anyway.
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Eric_Shea
post Sep 13 2016, 06:13 PM
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Injectors are being tested now. Report back tomorrow.
New 123 dizzy was set at 27 degrees exactly.

I'm hoping the injectors tell a story. They all tested good prior to install. I'd hate to have a problem with the 123. I may take it to Ed Fall and have him double check the curve.

The rest of the motor looks great. It doesn't look to have gotten that hot. Heads and other pistons still look new.
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Catorse
post Sep 13 2016, 08:12 PM
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That's what you call a piston squirter :-)
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jim_hoyland
post Sep 13 2016, 08:44 PM
Post #26


Get that VIN ?
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(IMG:style_emoticons/default/popcorn[1].gif) (IMG:style_emoticons/default/popcorn[1].gif) (IMG:style_emoticons/default/popcorn[1].gif) (IMG:style_emoticons/default/popcorn[1].gif)

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green914
post Sep 14 2016, 07:34 AM
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(IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/huh.gif) (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/barf.gif) That looks awful. Glad you still made it to RRC (IMG:style_emoticons/default/smoke.gif)
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Claus Graf
post Sep 14 2016, 07:59 AM
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Expect low compression in that cylinder... (IMG:style_emoticons/default/sad.gif)
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Mueller
post Sep 14 2016, 09:24 AM
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Bummer, hope to read what the cause was here so it can be avoided by him and others!

Could have been worse....I was troubleshooting a friends car which wouldn't start for her.

I had her crank over the motor while I stood over it looking around and there was a loud explosion as the cast aluminum valve cover blew apart, how I didn't get hit by chunks of sharp metal was amazing.

Turns out one of the pistons had a hole in it and that cylinder finally lit and the combustion gases went thru the hole in the piston and found the weak spot which was the valve cover!
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Eric_Shea
post Sep 14 2016, 01:59 PM
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Report from the injector shop came back just now. #3 down in volume and spraying a straight stream. It appears that's what holed Jimmy's KB.
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JustinMeier
post Sep 14 2016, 02:02 PM
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I think he was seeing his doctor about the same issue.....
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crash914
post Sep 14 2016, 02:14 PM
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Who do you use got injector service? Thus looks very much like what happened today my motor. I either lost an injector organizations it was clogged. Want go fix before I install on my new motor.
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JamesM
post Sep 14 2016, 02:38 PM
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QUOTE(Eric_Shea @ Sep 14 2016, 11:59 AM) *

Report from the injector shop came back just now. #3 down in volume and spraying a straight stream. It appears that's what holed Jimmy's KB.



That looks more cracked than melted, wondering if you will find a chunk somewhere in the case.
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76-914
post Sep 14 2016, 03:01 PM
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How about some details on your engine, Jimmy. Size, compression, modifications, engine hours, etc. What was the performance like up until it took a crap. Number 3 piston? (IMG:style_emoticons/default/popcorn[1].gif)
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pete000
post Sep 14 2016, 03:05 PM
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That's a compression release!
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Toast
post Sep 14 2016, 03:56 PM
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Not bad for carrying sway bars.
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QUOTE(JustinMeier @ Sep 14 2016, 01:02 PM) *

I think he was seeing his doctor about the same issue.....


(IMG:style_emoticons/default/happy11.gif)
Now that's......
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StratPlayer
post Sep 14 2016, 05:17 PM
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Engine: Late model D-Jet, 2056, OEM cylinders bored out to 96 mm. Keith Black pistons, Hastings rings.... New 123 ignition, new bearings, etc. The car was running great, lots of pep. Motor had maybe 2K on it, never took it on any long runs, just around town. Freeway short distance.

This was the first real test of the new motor. One injector decided it had enough.
fked up my piston. It could have been a lot worst. I have 4 new injectors, they will be going in the car.
Bottom end being checked for any junk that might have gotten in there. It will be checked fully.


Car will be up and running soon. Won't be long I'll put it to bed for the winter.
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veekry9
post Sep 14 2016, 05:33 PM
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Well,the fuel system has always been a no compromise repair,from rusty tank to aged plastic lines.
Lost a few 14s to the failure of any one part,and a single speck of debris that holed a piston. (IMG:style_emoticons/default/mad.gif)
A total rebuild then,is the path to hassle free running,a cleanout and replacement of rubber lines that appear ok externally.
An impressive hole and a lesson that warns those that might cut corners,'re+re your fuel system'.
A fuel system depot for all your needs might earn a dime,globally.
(IMG:style_emoticons/default/smile.gif)

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76-914
post Sep 15 2016, 09:30 AM
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QUOTE(StratPlayer @ Sep 14 2016, 04:17 PM) *

Engine: Late model D-Jet, 2056, OEM cylinders bored out to 65 mm. Keith Black pistons, Hastings rings.... New 123 ignition, new bearings, etc. The car was running great, lots of pep. Motor had maybe 2K on it, never took it on any long runs, just around town. Freeway short distance.

This was the first real test of the new motor. One injector decided it had enough.
fked up my piston. It could have been a lot worst. I have 4 new injectors, they will be going in the car.
Bottom end being checked for any junk that might have gotten in there. It will be checked fully.


Car will be up and running soon. Won't be long I'll put it to bed for the winter.

Damn Bubba! Nothing but the best and this happens. Go figure. (IMG:style_emoticons/default/beerchug.gif)
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whitetwinturbo
post Sep 16 2016, 09:28 PM
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Honey, does this wing make my ass look fat?
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(IMG:style_emoticons/default/WTF.gif) .........that looks like SUPER LEAN under load
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