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Old Jul 20, 2002 | 09:54 PM
  #10  
MikeSarr_GSR's Avatar
MikeSarr_GSR
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Joined: Jul 2002
Posts: 68
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From: Orlando
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I plan on taking the car to my friend chris who is a great diagnostic mechanic who has helped me out alot. he works
at the local acura store and he is very talented at working
things like this out. if I trip over some info from him and we
get it resolved, then I will definately share =)

by the way on my car:

since I discovered the issue

I have new 5-30w in it, just changed
the knock was present before and after the oil swap.
the oil before it was only in it 400 miles.
idle is unchanged, no spitting no stumbling
no knock at idle like in rooster's car, although
he did say thats how it started...
I think I will look back in my cam bearing surfaces
and see if the gauled up ones got any worse for
wear. when my engine sounded like rooster's,
I had over torqued bearing caps on the cams and
wiped about 4 of them, 2 of them completely clean.
one eventually stopped... it is then we removed them
cleaned the surfaces up and reinstalled. since the
engine seized a few degrees shy of BDC, there was
no valve contact. the engine ran PERFECT for 5K miles
without a burp, until I over tightened my lashes and
ran her hard for a day.

on this most recent thing, it sprung up after making
the valve lashes too tight (my theory) my sound is not
a low/medium pitch, it is a quick sound like a marble in a glass...
higher pitch than even a cam bearing this is why I think
I have a problem in the vtec assy. after running the car
hard with the wrong lashes, it really could be anything.
I rule out valves because I know what they sound like
when they bend and thats a tick. My motor does not tick
at all... you can hardly hear it when its idling. its very quiet
now as I went through it again and made the lashes perfect.
if there was any valve contact as of late... the idle would be
trashed and the car would be spitting and shuddering. if you
bend valves in the B series car, you will know it by God.

right now it has me scratching my head for sure. it is definately
mechanical, but if it were a rod, it would be deeper and always
present like a hammer on a 4x4 block of wood. I spun one in a B20A3 I had once and it was much, much diferent than this. The compression dropped when on the highway w/o warning and the knock was loud, deep and racous at idle and constant through the band. This sound is intermittant... and it has got me puzzled to say the least.

Only on accleration, VTEC is intermittant sometimes the click when the VTEC engages or disengages makes a series of snaps
sometimes it comes on, sometimes it doesnt. Regardless of
VTEC this sound only appears on engine speed acceleration, not on the way down and will do it at a constant engine speed above 2700 rpm throughout the rev band from there. I have only taxed it to 5500 since the clack in the motor was noticed.

I am broke for ideas until I can see my friend, so any ideas are appreciated. I could compression test her, I dont have a leak down tester. I can do that once I leave it with him.

cheers...
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