Good day one and all! I believe this is my first real thread i am starting and am doing so with hopes of sparing someone my experience...
...one beautiful sunday afternoon, 11/13/11 to be exact, i was driving home from the Winter Park Concourse de Elegance, reminising on the cars at that show and at the Simply Clean 3 event the day before when my car cut off when I came to a stop at a red light :frown:
After the second or two it tooked to process baby (thats my cars name) had shut of i turned the key to the ignition on switch didnt observe anything awkward and proceeded to turn her over. What happend next i can only describe as how id probly feel if my wife told me she was pregnant :tongue: CLANK CLANK CLANK CLANK the engine was knocking!?!?!?!?!?
I decided to limp into the plaza pass the intersection and await further review. A family friend / mechanic came by and after playing 21 questions w.me ask me to turn her on and then quickly had me cut the engine seeing that it seemed to be knocking.
After 2 tow trucks failed to show i had a 3rd tow to his shop he was kind enough to give me the keys to. Monday morning we went thru the routine and checklist / process of elimination.... consulting with Nabil @ First Class Automotive (THANK YOU SIR YOU ARE A TREMENDOUS HELP ASSET and MORE TO MYSELF THIS COMMUNITY :smile
The process of elimination took us from the bottom (oil pan off, checking the crank, rods, etc.) finding nothing but a clean block and nifty writtings on the rod bearings. To the top removing the cam holder thingies to find nothing again. :frown:
After replacing the rod / main bearing (since i was in there right :wink we turned the engine on and we had it again CLANK CLANK CLA..... then, it was gone. VERY confusing but we were able to keep the motor running long enough to go thru a few other processes one of which compression test on the cylinder to which we found #2 had VERY little, the same cylinder my buddy had been pointing to all along but wasnt able to find any evidence or cause (i am excluding the details on various test done initially suggest by him and Nabile, oil pressure etc etc).
So with no compression into the motor we went. I pulled the motor from the car and we went into seperating the heads and at long last there it was.... after many trips to Nabils shop and guesses we finally found where the problem was. The number 2 piston was pitted at the top on both ends.
We thought that the valves may of been hitting but when we looked at the bottom of the head the valves seemed find but the bottom of the head had the same pitting. My buddy advised he has seem that often in ford focuses the loose the valve seat into the cylinder, so we had the cause, we thought....
After checking the headers and cat for the piece of metal and coming up empty handed i dove into the intake manifold. I can not describe the feeling of disappointment and anger/:frown: when i open up the plenum and saw this:
The FAWKING vvis butterfly valve screws came loose!>!$%^@#%^(*!!!!!!
Two screws GONE!?!?!?! The other two holding the loose plates on loose themselves ready to give as well. I flipped intake over and out falls one of the screws intact... the other screw you ask, in two seperate... flattend pieces.
This scenario is referenced in these two threads but i had never noticed or come accross them:
sos<?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>
http://nsxprime.com/forum/showthread.php?t=154928&highlight=vvis
daves_x<o></o>
http://nsxprime.com/forum/showthread.php?t=112761&highlight=vvis
So hopefully my thread will be seen by someone before its too late and someone else and their motor get screwed... (insert rimshot here)
Anyone with the know how definetly get in there and put loctite, superglue, gorilla glue ANYTHING to prevent this or.... have them remove them completely, maybe Nabil can do a group rate lol. I for one just removed the plates and will deal with the possible power loss in the midrange until im sc'd :biggrin:
*When this happened i was at 107k miles, my car is daily drivin with the random spirited runs with the local group sporadically thru the year. Whether you 110% with maintanence or never change your oil this scenario is possible i would say*
*UPDATE* Also not that i was surprised to hear this, the machine shop let me know that a intake valve was indeed bent as well *UPDATE*
Sigh...x
<o></o>
...one beautiful sunday afternoon, 11/13/11 to be exact, i was driving home from the Winter Park Concourse de Elegance, reminising on the cars at that show and at the Simply Clean 3 event the day before when my car cut off when I came to a stop at a red light :frown:
After the second or two it tooked to process baby (thats my cars name) had shut of i turned the key to the ignition on switch didnt observe anything awkward and proceeded to turn her over. What happend next i can only describe as how id probly feel if my wife told me she was pregnant :tongue: CLANK CLANK CLANK CLANK the engine was knocking!?!?!?!?!?
I decided to limp into the plaza pass the intersection and await further review. A family friend / mechanic came by and after playing 21 questions w.me ask me to turn her on and then quickly had me cut the engine seeing that it seemed to be knocking.
After 2 tow trucks failed to show i had a 3rd tow to his shop he was kind enough to give me the keys to. Monday morning we went thru the routine and checklist / process of elimination.... consulting with Nabil @ First Class Automotive (THANK YOU SIR YOU ARE A TREMENDOUS HELP ASSET and MORE TO MYSELF THIS COMMUNITY :smile
The process of elimination took us from the bottom (oil pan off, checking the crank, rods, etc.) finding nothing but a clean block and nifty writtings on the rod bearings. To the top removing the cam holder thingies to find nothing again. :frown:
After replacing the rod / main bearing (since i was in there right :wink
we turned the engine on and we had it again CLANK CLANK CLA..... then, it was gone. VERY confusing but we were able to keep the motor running long enough to go thru a few other processes one of which compression test on the cylinder to which we found #2 had VERY little, the same cylinder my buddy had been pointing to all along but wasnt able to find any evidence or cause (i am excluding the details on various test done initially suggest by him and Nabile, oil pressure etc etc).So with no compression into the motor we went. I pulled the motor from the car and we went into seperating the heads and at long last there it was.... after many trips to Nabils shop and guesses we finally found where the problem was. The number 2 piston was pitted at the top on both ends.
We thought that the valves may of been hitting but when we looked at the bottom of the head the valves seemed find but the bottom of the head had the same pitting. My buddy advised he has seem that often in ford focuses the loose the valve seat into the cylinder, so we had the cause, we thought....
After checking the headers and cat for the piece of metal and coming up empty handed i dove into the intake manifold. I can not describe the feeling of disappointment and anger
/:frown: when i open up the plenum and saw this:
The FAWKING vvis butterfly valve screws came loose!>!$%^@#%^(*!!!!!!
Two screws GONE!?!?!?! The other two holding the loose plates on loose themselves ready to give as well. I flipped intake over and out falls one of the screws intact... the other screw you ask, in two seperate... flattend pieces.
This scenario is referenced in these two threads but i had never noticed or come accross them:
sos<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o></o>http://nsxprime.com/forum/showthread.php?t=154928&highlight=vvis
daves_x<o
></o>http://nsxprime.com/forum/showthread.php?t=112761&highlight=vvis
So hopefully my thread will be seen by someone before its too late and someone else and their motor get screwed... (insert rimshot here)
Anyone with the know how definetly get in there and put loctite, superglue, gorilla glue ANYTHING to prevent this or.... have them remove them completely, maybe Nabil can do a group rate lol. I for one just removed the plates and will deal with the possible power loss in the midrange until im sc'd :biggrin:
*When this happened i was at 107k miles, my car is daily drivin with the random spirited runs with the local group sporadically thru the year. Whether you 110% with maintanence or never change your oil this scenario is possible i would say*
*UPDATE* Also not that i was surprised to hear this, the machine shop let me know that a intake valve was indeed bent as well *UPDATE*
Sigh...x
<o
></o>
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