BB ticking noise ,update [Archive] - Chevelle Tech

: BB ticking noise ,update


HPseeker
Aug 2nd, 04, 8:47 PM
The cam was installed in 2-3-04 and it was verify for piston to valve clearance ,it is a XS-282S-10 ,This can be :
1- full floating ticking sound ?
2-piston to wall clearence ? I am runnig about 9:8:1 - 10:0:1
3-to fast closing valve

Last Saturday 31-7-04 I did my best 13.1 E/T and the car is making a left wheelstand , the power still there ,I will go now and change oil to verify any metal fragments .
ANY ADVICE WILL BE APPRECIATED

Bob West
Aug 2nd, 04, 9:19 PM
My sons 355 lost two cams...two lobes the first time,1 lobe the second time,,,4-5 months after they were installed. We found no sign of metal particles in the oil,I guess it wore them down ever so slowly. We've since installed the xe274h with Lunati microlube lifters and all is well, 8 months later. I'm not sure if it was valve spring pressure or lifters, the new cams had progressively more lift each time .470,.480, now .487/.490...since we found no evidence of metal,we didnt tear it down, we changed the oil a couple times to flush it out and all is well so far.

slpin
Aug 2nd, 04, 10:40 PM
maybe it is the solid lifters! graemlins/hurray.gif

HPseeker
Aug 2nd, 04, 11:10 PM
I change the oil ,the motor got the bypass valve plugged with 8 quart pan and hv pump ,and found in the oil filter(A/C 35L) had some metals they are not big metals parts .the cam was changed not because the first one was bad only looking for more hp .

should I take the motor apart ?

undee70ss
Aug 3rd, 04, 2:42 AM
Have you checked the lash?

ddeennis
Aug 3rd, 04, 9:36 PM
solid cams have a natural ticking noise......is this the noise you are hearing and thought something was wrong......

427L88
Aug 3rd, 04, 10:37 PM
Xavier, if the particles in the filter are magnetic, they're iron, and likely from the cam. But I don't think you'll find they're magnetic, mostly aluminum.

HPseeker
Aug 3rd, 04, 10:59 PM
Valve lash it is ok ,what got me worry is the sound with metal colored oil ,not big metal parts ,this can be normal ? before this noise got my attention I never look at the other oil filter before searching for any metal fragments so I do not know if this is correct ,as I said before the torque is there and the oil pressure ,I can be a little paranoid after reading some ticking noises dissasters. :confused:

plain 69
Aug 4th, 04, 9:31 PM
You had better be worried because that is the way my brother's 396 oil looked like with the 282S cam. It wiped all the bearings out as well. The crank was scrap afterwards. I would check lobe lift or if you can't do that I would pull the lifters out of their bores and look at them. We had about 4 lifters with about a 1/4" of material missing from the lifters.

Motor Martyr
Aug 4th, 04, 10:59 PM
if you installed the cam, lubed with moly, what you're seeing is probably moly. If you can twirl it around, and its very smooth to roll through your fingers its probably moly.

HPseeker
Aug 8th, 04, 9:12 AM
I took appart the motor ,everything seems to be perfect only for a piston to wall clearence in the #3cyl. but not sure ,I got to take the measures of everything now .
Motor Martyr I saw your post today ,yes I did use the moly lube ,and this was only the second oil change after the cam swap.

Motor Martyr
Aug 8th, 04, 10:12 AM
Moly stays on there for a while.

How much clearance do you have on #2?

HPseeker
Aug 8th, 04, 10:31 AM
I assume it can be clearence piston to wall problem ,because went I was searching for the noise with the motor running it came from the same spot #3 cyl and this is the only piston that got a little scratch on the top over the rings ,only on one size ,the others got the mark but less ,I really feel like putting back all together :confused:
A piston to wall clearence problem can be desastrous ?
I will try to get the clearences tomorrow and post them and see what you think :(

SORRY ,I was wrong the #3 cyl is the one with the little scratch .but the knock sound came from that spot

HPseeker
Aug 15th, 04, 12:07 AM
I measure the piston to wall clarence and I got problems graemlins/sad.gif ,my piston is 4.280 and with .007 -.009 will be save piston to bore ,but in the #2 I got .022-024 .

I got another question,the piston ring got to be flat to the piston or is ok to not get flat?

the rings in my motor do not get flat to the pistons,they go complete in .this is ok?

baddbob71
Aug 15th, 04, 9:37 AM
.022-.024 piston to wall clearance is excessive, if the piston diameter is the same as the rest then you'd better sleeve that hole and get your clearance right or just buy a larger set of pistons and bore the complete block. The rings will never seal with .022 clearance because the piston is rocking in the bore, that's the noise you are hearing.