i may be in trouble

[AllWhiteCoupe]

So i didnt drive my cb for 2 days, then when i got in it today, it started making a not so good sound. Im praying its not the dreaded rod knock. Its never done it befor. I started it, let it idle for a minuit or 2, then i started to drive slowly. It was a faint knockin from about 1500-3000 rpm, then it stoped, i put it in 2nd, and the same sound from 1500-3000. My valves are in need of adjustment, but it was more than a valve tap. It really did sound like steel knocking on aluminum.
Once the car got to operating temp. it stopped doing it. i got to work today, parked it and just hoped for the best. When i started it tonight, there was no knocking that i could hear. I dont understand what else it could be? I know what a knock sounds like, and thats what i think.
Well what i want to know is, if it is a knock, how long till it to late and i cant rebuild it? Should i just tear it apart now befor catastrophic failure? And how much do you think it would be for rod bearings? i can do all the work myself. Thanks guys

[foamypirate]

Mines been knocking for over a year, and I redline it all the time...I wouldn't be TOO worried. Mine also only does it from about 1700-2500 rpm.

[cali-racer]

get that valve adjustment asap

[Losiracer2]

check your oil? you could be low...

[AllWhiteCoupe]

yeah, i think ill do the valse next monday. I got 3 days where i dont HAVE to drive my car, so i think im gonna do it. I think valves are .10 exhaust and .12 intake? Something like that.

I do go through a lot of oil, about a quart in 2 weeks. But i stay on top of it.

Im worried couse i spent the last 2 yrs. making the body rust free and straght, and make i look nice, now its the motor. I just dont want to drop a rod, and lose the block. Anyone know a good place to get rob bearings?

[wed3k]

10 on the intake and 12 on the exhaust...exhaust are always larger unless it is a hydraulic cam on a small block chevy where it takes zero lash :o

ACL rod bearings are really cheap...but i would assume you need a different size to slightly compensate for the knock if, infact, is a rod knock.

in that case a pair of oem's should do the trick. just need someone to mic the crank and the rod housing of the one making the knock to confirm the bearing clearance.

[riceraccord]

Since it sat for two days I am assuming all the oil drained into the oil pan so when you started it up it was lacking lubrication to the top of the motor. I f I let mine sit for more than two days it does the same thing makes noise till it warms up then It goes away.

[C91BLX7]

1000-2000rpm mine make a loud ticking noise, the valves need an adjustment have to get around to that soon

[Scubasteve_dan]

Same problem I think

Mine makes a "ticking sound" at low rpm's, it's the most noticable at 1500-3000 rpm's and even a lil bit louder if I'm putting the engine under extra load(climbing a hill or accelerating more rapidly than usual). But if I let my car run for 10 minutes before getting in it and driving then I don't hear it, I only seem to hear it if I start driving after I first start it up and accelerate, I don't hear the tick when I'm sitting at idle either. Could this be a lubrication problem that could be fixed with a simple oil additive or will I need to save my pennies to get a valve adjustment or something? I'm kinda low on money so I hope it aint too serious.

[accordmaniac]

Time for the valve adjustment.

[Otto]

Mines been knocking for over a year, and I redline it all the time...I wouldn't be TOO worried. Mine also only does it from about 1700-2500 rpm.

Same here, been like that for over 30,000 miles. Even after valve adjustment, though it was my first one so I could have easily gotten the lash wrong.
Even when I don't let it warm up, I don't have a problem.

Now if it just make a knocking noise for several seconds, I'd agree it was lack of oil/oil pressure. In that case, I'd switch to a different oil filter. I've never had oil pressure issues even after a few days of sitting. Light usually goes out before I release the key from the start position.

[AllWhiteCoupe]

That makes me feel a little better. Im pretty sure its from oil draining from the top end after sitting for a couple days. If its a rod knock, itll get worse in 8 months, or a year or something. I just wanna rebuild it befor i fuck up everything, you know? Thanks for the input

[AllWhiteCoupe]

hey yall, i did the valve lash About 15 min, ago. I also advanced the timing about 10-12*. cant wait to drive it. It already runs uieter and it is reving alot faster. Ill get back in about 3 hours.

[GREENCB3]

Glad to hear that

[AllWhiteCoupe]

I dont know. i got to drive it. The valve train is really quiet, but damn, something is still knocking. I like the timing, but now i hear the kock till 4000 instead of 3000, and it didnt go away. i got 93 pump gas just becouse of the change. And why does it seem like i got more low end instead of more top end? I read that counter clockwise was the way to go. Maby im wrong. If it keep this noise up, im gonna put it back to stock and call it good!