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New crate engine is now a steam engine....bad problem...

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Old Mar 6, 2006 | 08:23 PM
  #161  
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Another closeup of the piston.....

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Old Mar 6, 2006 | 08:24 PM
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Originally Posted by Gordonm
I would not give up that easily. Your timing would have to be way off and probably would not idle very well if it was that screwed up. It will be their decision but put the pressure on them.
Shouldn't start "right up", like you said, or idle at all if the timing was off bad enough to do that kind of damage. I am still saying not you fault. Plus if the timing was off that bad, it would have done something to the other cylinders. They would all be off and detonating hard. Like i said, i doubt it would run at all. I would still be putting pressure on them, cause from my point of view, def. not your fault.
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Old Mar 6, 2006 | 08:27 PM
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Originally Posted by MotorHead
Don't throw in the towel yet, let them make the diagnosis, if you start blaming it on yourself at this point it will be almost impossible to reverse that if something is found that makes it look like their mistake. Just do as they tell you and don't offer any more info at this time. It is still up in the air as to what happened isn't it ?

Still haven't answered my question about any RTV present around the water passages, looks like that milky stuff leaves a trail right to the water ports on the underside of the intake
No RTV present anywhere, all of the gasket pulled of with a light touch.

Now the head bolts did have RTV on the threads and were torqued tighter than Dick's hat band!!
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Old Mar 6, 2006 | 08:32 PM
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Originally Posted by corvetteatv7
Shouldn't start "right up", like you said, or idle at all if the timing was off bad enough to do that kind of damage. I am still saying not you fault. Plus if the timing was off that bad, it would have done something to the other cylinders. They would all be off and detonating hard. Like i said, i doubt it would run at all. I would still be putting pressure on them, cause from my point of view, def. not your fault.
Fired on the first try, and ran like a bat outa hell!! For 1/2 a mile, anyway.....funny thing is it cranked right up the next morning, was a little rougher idle, but not really bad.

I had backed it out into the driveway yesterday morning so the headers wouldn't make me deaf when I notice the water blowing out of the header. Shut her down when I checked the oil. Then I restarted with ease, and pulled her back into the garage where she now sits.

Thanks for the encouragement, and I'll accept whatever happens. I think their is a good chance it was detonating, but the other cylinders look fine. I'll going to check the other side spark plugs and see what they look like.....

Good question though, why just one cylinder? Just the weakest link?
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Old Mar 6, 2006 | 08:36 PM
  #165  
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Dayum, how many folks are checking on this thread? Reads like a book, doesn't it....a bad ending book....

3331 views in 24 hrs......wow.

I'll be famous on the corvette forum for quickest blown crate motor ever in corvette history!!
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Old Mar 6, 2006 | 08:42 PM
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Engine fired right up! Engine then idled in a good manner. Engine builder missed something!
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Old Mar 6, 2006 | 08:46 PM
  #167  
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Were those pistons forged or hypers?
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Old Mar 6, 2006 | 08:49 PM
  #168  
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ANother thing that could have happened is somehow water got into the #6 cylinder and rapidly cooled the piston and thereby cracked it, IMHO I don't think it is from detonation
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Old Mar 6, 2006 | 09:06 PM
  #169  
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why the shifting of the cause of the problem from them to you??? i would admit nothing and let them determine the cause... so.... you may have possibly had the car to far advanced to cause detonation....you also may not have had the car to far advanced.....if it started up easily it may not have been to far advanced...
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Old Mar 6, 2006 | 09:14 PM
  #170  
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Originally Posted by Azlonio
Engine fired right up! Engine then idled in a good manner. Engine builder missed something!
My opinion exactly.
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Old Mar 6, 2006 | 09:19 PM
  #171  
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Originally Posted by Kalway
Were those pistons forged or hypers?
Keith Black Hypers
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Old Mar 6, 2006 | 09:22 PM
  #172  
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Took the fan outa the way and tried to turn the motor over by hand, it won't budge. Barely got it to move. I think that cylinder is locked up.
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Old Mar 6, 2006 | 09:26 PM
  #173  
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Originally Posted by MsVetteMan
Took the fan outa the way and tried to turn the motor over by hand, it won't budge. Barely got it to move. I think that cylinder is locked up.

you may have even spun a couple of bearings....
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Old Mar 6, 2006 | 09:26 PM
  #174  
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Default WHOA! before you pass judgement

Maybe someone has already mentioned this ... I dunno ...

Regarding the piston with top of top land broken off ... the root cause here MAY have nothing to do with timing or water. IF ... If the builder did not provide adequate ring gap ... IF SO ... then the rings will QUICKLY bind up and can just as quickly snap the land off ... while doing so, this could also crack the cylinder wall ... then allowing water & oil to mix ... & water out the exhaust.

Don't pass judgement so quickly on the end-user or the builder ... a check & measurement of ring gaps on bad cylinder & other cylinders should shed some light.
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Old Mar 6, 2006 | 09:28 PM
  #175  
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Check the valves closely on that cylinder...sure looks like something struck the piston.

That is not your fault (IMO)....I see warranty replacement ASAP.
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Old Mar 6, 2006 | 09:29 PM
  #176  
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Hey guys, I'm not admitting any fault to them yet....

I sent them pics of the piston and the other of all the pistons and basically just said this doesn't look good.

Ball is in there court again.

If it's my fault, fine. I don't want to go through all the bullchit with pulling the motor, crating it up, sending it off, and waiting 3 months for a reply telling me it's my fault, when I could be working on my old block rebuild.

Dayum sure not buying another one of their's......

If I grenade one again, it will be by my own doings.....

I'll talk with them again in the morning and see where we are at. Me and ole Clarence are still tight at this point!! lol....
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Old Mar 6, 2006 | 09:31 PM
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where are pictures of the bottom of the head....is that valve bent by any chance?
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Old Mar 6, 2006 | 09:32 PM
  #178  
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Originally Posted by Zixxer
Check the valves closely on that cylinder...sure looks like something struck the piston.

That is not your fault (IMO)....I see warranty replacement ASAP.
The valves look fine from the outside. But I'll look again. I don't want to pull them out because ole "Clarence" hasn't approved that yet!!
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Old Mar 6, 2006 | 09:34 PM
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Originally Posted by bobs77vet
where are pictures of the bottom of the head....is that valve bent by any chance?
pic....


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Old Mar 6, 2006 | 09:34 PM
  #180  
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
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Originally Posted by jackson
Maybe someone has already mentioned this ... I dunno ...

Regarding the piston with top of top land broken off ... the root cause here MAY have nothing to do with timing or water. IF ... If the builder did not provide adequate ring gap ... IF SO ... then the rings will QUICKLY bind up and can just as quickly snap the land off ... while doing so, this could also crack the cylinder wall ... then allowing water & oil to mix ... & water out the exhaust.

Don't pass judgement so quickly on the end-user or the builder ... a check & measurement of ring gaps on bad cylinder & other cylinders should shed some light.
That is probably exaclty what happened, as soon as he said Kieth Black a light went off. Kieth Black pistons require extra gap on the top ring, more than the ordinary hyperutectic piston because of the high silicone content of the piston. If they were not gapped correctly correctly it is the builders fault, this can be easily determined by removing the piston and measuring ring gap.
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