Roadboss
Dedicated LVC Member
Here's an off the wall shot. How about a marginally loose spark plug.
Timing Chain Noise??
- Thread starter johnboy89
- Start date
You know, that's a very good idea..
That is very close to the sound my car made just seconds before "launching a plug" thru the coil cover.
But.. I dont think it is what is happenning to his car, because it "hasn't launched the plug" yet.
Mine made about 10 good "taps" before the plug "launched".
IF it was a loose plug in his car, I'd presume/speculate it would have launched by now.
"couldn't hurt" to pull the coil covers and verify the plugs are good and tight and dont have a busted plug with a combustion leak..
2002WRXSTi
Dedicated LVC Member
My engine makes the same noises when it's cold out. I mean the same loud tapping as your YouTube video. It was to the point that I would go out and start it, go inside and get my stuff. Then when I came back out it would be quiet again. Did this all winter too and was worried about it.
I went and got the timing chain gear assembly that is damn expensive! 4 chains and 6 sprockets and guides at RockAuto was quite a few 100! So I looked at the manual to see what I was looking at and of course it wants you to use an expensive cam tool too
My IMRC went bad after that I bought one and of course got the wrong one
I tripped upon a 96' enigne on EBAY with 90k on the clock for $375 and $150 shipping. So now I am just looking at doing a full swap. Mostly cause my car just quit last night and wont fire at all
I went and got the timing chain gear assembly that is damn expensive! 4 chains and 6 sprockets and guides at RockAuto was quite a few 100! So I looked at the manual to see what I was looking at and of course it wants you to use an expensive cam tool too
My IMRC went bad after that I bought one and of course got the wrong one
I tripped upon a 96' enigne on EBAY with 90k on the clock for $375 and $150 shipping. So now I am just looking at doing a full swap. Mostly cause my car just quit last night and wont fire at all
kustomizingkid
Dedicated LVC Member
2002WRXSTi
Dedicated LVC Member
Yeah what are you doing or what did you do to that car that allows you to pull it so high in the RPM range? I mean the stock intake and stuff has to be dead at those upper RPM ranges.
My original engine that was still running when I pulled it out lasted until 360,000 miles. It had tossed the secondary cam chain tensioner, and was making more racket than in the youtube video above.
I drove it for 25K like that, and since the noise only happend on start up, the motor likely would have lasted many more miles... BUT...
I was knee deep in the middle of a season long points race "Street Stock Bracket Race" and I was in First Place, so I didn't want to take a chance on having the engine "toss itself" while "on the track"....so I replaced it.
Transmission, my original transmission lost reverse, well it still HAD reverse but it shuddered really bad when backing up...
SO I secured a 98 LSC trans and dropped it in.
I dont attribute either of those failures to "high RPM".
The nylon pad on the cam tensioner finally "wore thru".... I could have easily just replaced the tensioner and went on with life.
IMHO it was much easier to "R&R" the whole engine than it was to start taking it apart to find and fix the source of the noise.
SO in short.. to answer your question.
I have been thru 1 motor and 1 trans in 360,000 mile and well over 5000 dragstrip passes {which comes out to about 1100 miles of WOT)
mmtphoto
Well-Known LVC Member
kustomizingkid
Dedicated LVC Member
Are you serious XLRVIII??
That is freaking amazing.
That is freaking amazing.
2002WRXSTi
Dedicated LVC Member
Yeah it's kinda funny cause I was just taking my Boss for a ride somewhere the day before my Mark broke down.
He was like I cannot believe this car is still running with the way you drive it He was most likely shocked because of the broken motor mount and every time I would leave out of a light you hear a loud clank and thud as the engine tries to remove itself from the engine bay :shifty:
Since I have a spare engine I am not to nice to the original engine. Just pissed me off that it quit running in such a non spectacular way
He was like I cannot believe this car is still running with the way you drive it
He was most likely shocked because of the broken motor mount and every time I would leave out of a light you hear a loud clank and thud as the engine tries to remove itself from the engine bay :shifty: Since I have a spare engine I am not to nice to the original engine. Just pissed me off that it quit running in such a non spectacular way